1
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Xia X, Han X, Zhai Y. Activation of iron oxide minerals in an aquifer by humic acid to promote adsorption of organic molecules. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120543. [PMID: 38479284 DOI: 10.1016/j.jenvman.2024.120543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 02/25/2024] [Accepted: 02/29/2024] [Indexed: 04/07/2024]
Abstract
In aquifers, the sequestration and transformation of organic carbon are closely associated with soil iron oxides and can facilitate the release of iron ions from iron oxide minerals. There is a strong interaction between dissolved organic matter (DOM) and iron oxide minerals in aquifers, but the extent to which iron is activated by DOM exposure to active iron minerals in natural aquifers, the microscopic distribution of minerals on the surface, and the mechanisms involved in DOM molecular transformation are currently unclear. This study investigated the nonbiological reduction transformation and coupled adsorption of iron oxide minerals in aquifers containing DOM from both macro- and micro perspectives. The results of macroscopic dynamics experiments indicate that DOM can mediate soluble iron release during the reduction of iron oxide minerals, that pH strongly affects DOM removal, and that DOM is more efficiently degraded at low rather than high pH values, suggesting that a low pH is conducive to DOM adsorption and oxidation. Spherical aberration-corrected scanning transmission electron microscopy (SACTS) indicates that the reacted mineral surfaces are covered with large amounts of carbon and that dynamic agglomeration of iron, carbon, and oxygen occurs. At the nanoscale, three forms of DOM are found in the mineral surface agglomerates (on the surfaces, inside the surface agglomerates, and in the polymer pores). The microscopic organic carbon and iron mineral reaction patterns can form through oxidation reactions and selective adsorption effects. Fourier transform ion cyclotron resonance mass spectra indicate that both synergistic and antagonistic reactions occur between DOM and the minerals, that the release of iron is accompanied by DOM decomposition and humification, that large oxygen- and carbon-containing molecules are broken down into smaller oxygen- and carbon-containing compounds and that more molecules are produced through oxidation under acidic rather than alkaline conditions. These molecules provide adsorption sites for sediment, meaning that more iron can be released. Microscopic evidence for the release of iron was acquired. These results improve the understanding of the geochemical processes affecting iron in groundwater, the nonbiological transformation mechanisms that occur at the interfaces between natural iron minerals and organic matter, groundwater pollution control, and the environmental behavior of pollutants.
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Affiliation(s)
- Xuelian Xia
- College of Water Sciences, Beijing Normal University, Beijing, 100875, China
| | - Xu Han
- Department of Ecology and Environment of Heilongjiang Province, 150090, Harbin, China
| | - Yuanzheng Zhai
- College of Water Sciences, Beijing Normal University, Beijing, 100875, China.
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2
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Huang S, Chen M, Lu H, Eitssayeam S, Min Y, Shi P. Effect of pyrolysis temperature on the binding characteristics of DOM derived from livestock manure biochar with Cu(II). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:24250-24262. [PMID: 38436847 DOI: 10.1007/s11356-024-32646-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 02/21/2024] [Indexed: 03/05/2024]
Abstract
Biochar-derived dissolved organic matter (BDOM) has the potential to influence the environmental application of biochar and the behavior of heavy metals. In this study, the binding properties of BDOM derived from livestock manure biochar at different pyrolysis temperatures with Cu(II) were investigated based on a multi-analytical approach. The results showed that the DOC concentration, aromatics, and humification degree of BDOM were higher in the process of low pyrolysis of biochar. The pyrolysis temperature changed the composition of BDOM functional groups, which affected the binding mechanism of BDOM-Cu(II). Briefly, humic-like and protein-like substances dominated BDOM-Cu(II) binding at low and high pyrolysis temperatures, respectively. The higher binding capacity for Cu(II) was exhibited by BDOM derived from the lower pyrolysis temperature, due to the carboxyl as the main binding site in humic acid had high content and binding ability at low-temperature. The amide in proteins only participated in the BDOM-Cu(II) binding at high pyrolysis temperature, and polysaccharides also played an important role in the binding process. Moreover, the biochar underwent the secondary reaction at certain high temperatures, which led to condensation reaction of the aromatic structure and the conversion of large molecules into small molecules, affecting the BDOM-Cu(II) binding sites.
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Affiliation(s)
- Shujun Huang
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, People's Republic of China
| | - Muxin Chen
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, People's Republic of China
| | - Hongxiu Lu
- Department of Biomedicine and Health, Shanghai Vocational College of Agriculture and Forestry, Shanghai, 201699, People's Republic of China
| | - Sukum Eitssayeam
- Physics and Materials Science Department, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai, 50200, Thailand
| | - Yulin Min
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, People's Republic of China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200090, People's Republic of China
| | - Penghui Shi
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai, 200090, People's Republic of China.
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200090, People's Republic of China.
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3
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Peng XX, Gai S, Liu Z, Cheng K, Yang F. Effects of Fe 3+ on Hydrothermal Humification of Agricultural Biomass. CHEMSUSCHEM 2024; 17:e202301227. [PMID: 37833827 DOI: 10.1002/cssc.202301227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/15/2023] [Accepted: 10/13/2023] [Indexed: 10/15/2023]
Abstract
Hydrothermal humification technology for the preparation of artificial humic matters provides a new strategy, greatly promoting the natural maturation process. Iron, as a common metal, is widely used in the conversion of waste biomass; however, the influence of Fe3+ on hydrothermal humification remains unknown. In this study, FeCl3 is used to catalyze the hydrothermal humification of corn straw, and the influence of Fe3+ on the hydrothermal humification is explored by a series of characterization techniques. Results show that Fe3+ as the catalyst can promote the decomposition of corn straw, shorten the reaction time from 24 h to 6 h, and increase the yield from 6.77 % to 14.08 %. However, artificial humic acid (A-HA) obtained from Fe3+ -catalysis hydrothermal humification contains more unstable carbon and low amount of aromatics, resulting in a significantly decreased stability of the artificial humic acid. These results provide theoretical guidance for regulating the structure and properties of artificial humic acid to meet various maintenance needs.
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Affiliation(s)
- Xiong-Xin Peng
- School of Water Conservancy and Civil Engineering Department, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Provincial International Joint Laboratory of Smart Soil, Harbin, 150030, China
| | - Shuang Gai
- School of Water Conservancy and Civil Engineering Department, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Provincial International Joint Laboratory of Smart Soil, Harbin, 150030, China
| | - Zhuqing Liu
- School of Water Conservancy and Civil Engineering Department, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Provincial International Joint Laboratory of Smart Soil, Harbin, 150030, China
| | - Kui Cheng
- Heilongjiang Provincial International Joint Laboratory of Smart Soil, Harbin, 150030, China
- College of Engineering, Northeast Agricultural University, Harbin, 150030, China
| | - Fan Yang
- School of Water Conservancy and Civil Engineering Department, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Provincial International Joint Laboratory of Smart Soil, Harbin, 150030, China
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4
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He Y, Deng Q, Cao L, Luo C, Zhao W, Tao H, Chen L, Zhu Y, Zhang J, Mo X, Mi B, Wu F. Highly efficient Ni(II) adsorption by industrial lignin-based biochar: a pivotal role of dissolved substances within biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:10874-10886. [PMID: 38212563 DOI: 10.1007/s11356-024-31889-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 01/02/2024] [Indexed: 01/13/2024]
Abstract
In the context of carbon neutrality, promoting resource utilization of industrial alkali lignin addressing heavy metal pollution is crucial for China's pollution alleviation and carbon reduction. Microwave pyrolysis produced functionalized biochar from industrial alkali lignin for Ni(II) adsorption. LB400 achieved 343.15 mg g-1 saturated adsorption capacity in 30 min. Pseudo-second-order kinetic and Temkin isotherm models accurately described the adsorption, which was endothermic and spontaneous (ΔGϴ < 0, ΔHϴ > 0). Quantitative analysis revealed that both dissolved substances and carbon skeleton from biochar contributed to adsorption, with the former predominates (93.76%), including mineral precipitation NiCO3 (Qp) and adsorption of dissolved organic matter (QDOM). Surface complexation (Qc) and ion exchange (Qi) on the carbon skeleton accounted for 6.3%. Higher biochar preparation temperature reduced Ni(II) adsorption by dissolved substances. Overall, biochar which comes from the advantageous disposal of industrial lignin effectively removes Ni(II) contamination, encouraging ecologically sound treatment of heavy metal pollution and sustainable resource utilization.
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Affiliation(s)
- Yanying He
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
| | - Qianyi Deng
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
| | - Liwen Cao
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
| | - Cheng Luo
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
| | - Wenjie Zhao
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
| | - Honglin Tao
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
| | - Long Chen
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
| | - Yule Zhu
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
| | - Jing Zhang
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
| | - Xueying Mo
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
| | - Baobin Mi
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China
- Research Institute of Vegetables, Hunan Academy of Agriculture Sciences, Changsha, 410125, China
| | - Fangfang Wu
- School of Chemistry and Materials Science, College of Agronomy, Hunan Agricultural University, Changsha, Hunan, 410128, People's Republic of China.
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Liu M, Zhang L, Yang R, Cui H, Li Y, Li X, Huang H. Integrating metal-organic framework ZIF-8 with green modifier empowered bacteria with improved bioremediation. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132475. [PMID: 37714005 DOI: 10.1016/j.jhazmat.2023.132475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 09/02/2023] [Accepted: 09/02/2023] [Indexed: 09/17/2023]
Abstract
Suspended microorganisms often experience diminished efficacy in the bioremediation of polycyclic aromatic hydrocarbons (PAHs). In this study, the potential of zeolite imidazolate framework-8 (ZIF-8) and the eco-friendly modifier citric acid (CA) was harnessed to generate a biomimetic mineralized protective shell on the surface of Bacillus subtilis ZL09-26, resulting in an enhanced capability for PAH degradation. This investigation encompassed the integrated responses of B. subtilis ZL09-26 to ZIF-8 and ZIF-8-CA at both cellular and proteomic levels. The amalgamation of ZIF-8 and CA not only stimulated the growth and bolstered the cell viability of B. subtilis ZL09-26, but also counteracted the toxic effects of phenanthrene (PHE) stress. Remarkably, the bioremediation prowess of B. subtilis ZL09-26@ZIF-8-CA surpassed that of ZL09-26@ZIF-8 and ZL09-26, achieving a PHE removal rate of 94.14 % within 6 days. After undergoing five cycles, ZL09-26@ZIF-8-CA demonstrated an enduring PHE removal rate exceeding 83.31 %. A complex interplay of various metabolic pathways orchestrated cellular responses, enhancing PHE transport and degradation. These pathways encompassed direct PHE biodegradation, central carbon metabolism, oxidative phosphorylation, purine metabolism, and aminoacyl-tRNA biosynthesis. This study not only extends the potential applications of biomineralized organisms but also offers alternative strategies for effective contaminant management.
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Affiliation(s)
- Mina Liu
- College of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210009, China
| | - Lei Zhang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
| | - Rongrong Yang
- College of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210009, China
| | - Haiyang Cui
- RWTH Aachen University, Templergraben 55, 52062 Aachen, Germany
| | - Yanan Li
- College of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210009, China
| | - Xiujuan Li
- College of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210009, China.
| | - He Huang
- College of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210009, China
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Mu D, Mu L, Geng X, Mohamed TA, Wei Z. Evolution from basic to advanced structure of fulvic acid and humic acid prepared by food waste. Int J Biol Macromol 2024; 256:128413. [PMID: 38029895 DOI: 10.1016/j.ijbiomac.2023.128413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 12/01/2023]
Abstract
Fulvic acid (FA) and humic acid (HA) are common polyacids in nature. However, the evolutionary process of their basic and advanced structures is still unclear. FA and HA were separated into five molecular weight components to investigate the process of evolution from small to large molecules. The primary structure analysis showed that FA were rich in CN, COOH and OH content, while HA were rich in (CH2)n, NH2 and CC. Moreover, with the molecular weight increasing, the structures could complement each other to maintain the hydrophilic or hydrophobic balance. The 2D-COS spectroscopy demonstrated that during the growth of FA, COOH, NH2 and OH firstly respond. On the other hand, during the growth of HA, NH2 and (CH2)n firstly respond. In addition, advanced structure of FA was affected by intramolecular hydrogen bonds and π - π interaction. HA was affected by hydrophobic interactions due to the abundance of hydrophobic groups, primarily (CH2)n and benzene rings. 3D conformational fitting and particle size characterization confirmed that the interaction forces determine that FA and HA become tightly and loosely molecules respectively. This study is to further explore the geochemical formation and evolution process of FA and HA molecules.
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Affiliation(s)
- Daichen Mu
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Linying Mu
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Xinyu Geng
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Taha Ahmed Mohamed
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Zimin Wei
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China.
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7
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Efremenko E, Stepanov N, Senko O, Lyagin I, Maslova O, Aslanli A. Artificial Humic Substances as Biomimetics of Natural Analogues: Production, Characteristics and Preferences Regarding Their Use. Biomimetics (Basel) 2023; 8:613. [PMID: 38132553 PMCID: PMC10742262 DOI: 10.3390/biomimetics8080613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023] Open
Abstract
Various processes designed for the humification (HF) of animal husbandry wastes, primarily bird droppings, reduce their volumes, solve environmental problems, and make it possible to obtain products with artificially formed humic substances (HSs) as analogues of natural HSs, usually extracted from fossil sources (coal and peat). This review studies the main characteristics of various biological and physicochemical methods of the HF of animal wastes (composting, anaerobic digestion, pyrolysis, hydrothermal carbonation, acid or alkaline hydrolysis, and subcritical water extraction). A comparative analysis of the HF rates and HS yields in these processes, the characteristics of the resulting artificial HSs (humification index, polymerization index, degree of aromaticity, etc.) was carried out. The main factors (additives, process conditions, waste pretreatment, etc.) that can increase the efficiency of HF and affect the properties of HSs are highlighted. Based on the results of chemical composition analysis, the main trends and preferences with regard to the use of HF products as complex biomimetics are discussed.
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Affiliation(s)
- Elena Efremenko
- Faculty of Chemistry, Lomonosov Moscow State University, Lenin Hills 1/3, Moscow 119991, Russia; (N.S.); (O.S.)
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8
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Zhang Y, Kong X, Yang Y, Ran Y. Effect of organic carbon structures on the degradation of nonylphenol by hydrogen peroxide in sediment-water system. JOURNAL OF ENVIRONMENTAL QUALITY 2023; 52:1166-1177. [PMID: 37683113 DOI: 10.1002/jeq2.20510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/17/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023]
Abstract
A laboratory experiment is conducted to investigate the effects of organic carbon (OC) from riverine and marine sediments on the degradation of ring-14 C-labeled nonylphenol (14 C-NP) by hydrogen peroxide (H2 O2 ). Researchers have isolated demineralized OC (DM) before and after oxidation, namely, DM and resistant OC (ROC) fractions, respectively. The structures of DM and ROC are characterized using solid-state 13 C nuclear magnetic resonance. Unstable structures (O-alkyl, OCH3 /NCH, and COO/NC=O) show a significant and positive correlation with the degradation of 14 C-NP (R2 > 0.73, p < 0.05), thus suggesting that the NP absorbed in the unstable structures is easily degraded because of the decomposition of unstable components. The stable structures (alkyl C and non-protonated aromatic C [Arom C─C]) exhibit a significant and negative correlation with the degradation of 14 C-NP (R2 > 0.69, p < 0.05), thus suggesting that the NP absorbed and protected in these resistant structures is minimally degraded. The significant correlations among the degradation kinetic parameters (Frap and Fslow ), OC structures (Falip and Farom ), and microporosity further illustrate the important protective roles of OC structures and micropores in the degradation of 14 C-NP by H2 O2 (R2 > 0.69, p < 0.05). The parent NP fraction that desorbed into the aqueous solution or extracted is completely degraded, indicating preferential degradation of the easily desorbed NP. This study provides important insights into the NP degradation mechanism in sediment-water systems, particularly regarding sediment OC structures and microporosity.
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Affiliation(s)
- Yongli Zhang
- State Key Laboratory of Organic Geochemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xianglan Kong
- State Key Laboratory of Organic Geochemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yu Yang
- State Key Laboratory of Organic Geochemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, China
| | - Yong Ran
- State Key Laboratory of Organic Geochemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, China
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9
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Xiong Y, Bi E. Effect of endogenetic dissolved organic matter on tetracycline adsorption by biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27847-9. [PMID: 37249777 DOI: 10.1007/s11356-023-27847-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 05/19/2023] [Indexed: 05/31/2023]
Abstract
The endogenetic biochar-derived dissolved organic matter (BDOM) might interact with pollutants in the environment. In this study, tetracycline (TC) was selected as the representative pollutant, and corn straw biochar (pyrolyzed at 300 °C) was used as the adsorbent. Through batch experiments and microscopic characterization, the releasing kinetics of BDOM and its effect on TC adsorption on biochar were investigated. The results showed that BDOM with weaker aromaticity and higher molecular weight was preferentially released. BDOM release led to the decrease of specific surface area (from 4.02 to 1.83 m2/g), mesopore number, and aromaticity of biochar (H/C increased from 0.80 to 0.91) and consequently weakened the pore filling of TC on biochar, hydrophobic interaction, and π-π EDA (electron donor receptor) interaction between biochar and TC. In addition, the released BDOM could form a complex with TC in solution to prevent TC adsorption on biochar. Overall, the change in the structural properties of biochar caused by BDOM release had a greater impact on the inhibition of TC adsorption than that of BDOM and TC complexation in this study. Through EEM-PRARFAC, BDOM contained about 63% humic acid-like fluorescent component and 37% tryptophan-like fluorescent component; the former (logKb values were 7.31 and 6.48, respectively) had a stronger binding strength with TC than the latter (logKb was 6.45). The findings of this study could provide some useful evidence for the removal of organic pollutants in soil and water environments and biochar application in pollution remediation.
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Affiliation(s)
- Ying Xiong
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, and Beijing Key Laboratory of Water Resources and Environmental Engineering, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China
| | - Erping Bi
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, and Beijing Key Laboratory of Water Resources and Environmental Engineering, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China.
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10
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Liu S, Huang J, He W, Zhang W, Yi K, Zhang C, Pang H, Huang D, Zha J, Ye C. Impact of microplastics on lead-contaminated riverine sediments: Based on the enzyme activities, DOM fractions, and bacterial community structure. JOURNAL OF HAZARDOUS MATERIALS 2023; 447:130763. [PMID: 36641852 DOI: 10.1016/j.jhazmat.2023.130763] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/29/2022] [Accepted: 01/08/2023] [Indexed: 06/17/2023]
Abstract
Microplastics (MPs) are able to interact with diverse contaminants in sediments. However, the impacts of MPs on sediment properties and bacterial community structure in heavy metal-contaminated sediments remain unclear. In this study, we investigated the adsorption of Pb(II) by sediment-MPs mixtures and the effects of different concentration MPs on sediment enzyme activities, DOM fractions, and Pb bioavailability in riverine sediments, and further explored the response of sediment microbial community to Pb in the presence of MPs. The results indicated that the addition of MPs significantly decreased the adsorption amount of Pb(II) by sediments, especially decreased by 12.6% at 10% MPs treatment. Besides, the changes in enzyme activities, DOM fractions exhibited dose-dependent effects of MPs. The higher level of MPs (5% and 10%) tends to transform Pb into more bioavailable fractions in sediments. Also, MPs amendment was observed to alter sediment bacterial community structures, and community differences were evident in the uncontaminated and lead-contaminated sediments. Therein, significant increase of Bacteroidota, Proteobacteria and decrease of Firmicutes abundance in Pb-contaminated sediment at the phylum level were observed. These findings are expected to provide comprehensive information for assessing the combined ecological risks of heavy metals and MPs in riverine sediments.
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Affiliation(s)
- Si Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - JinHui Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
| | - WenJuan He
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Wei Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - KaiXin Yi
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - ChenYu Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - HaoLiang Pang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - DanLian Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Jun Zha
- Hunan Yixin Environmental Engineering Co., Ltd., Changsha 410004, Hunan, PR China
| | - Cong Ye
- Hunan Yixin Environmental Engineering Co., Ltd., Changsha 410004, Hunan, PR China
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11
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Yang Y, Duan P, Jiao L, He J, Ding S. Particle-scale understanding sorption of phenanthrene on sediment fractions amended with black carbon and humic acid. CHEMOSPHERE 2022; 307:136070. [PMID: 35985379 DOI: 10.1016/j.chemosphere.2022.136070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/16/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Black carbon (BC) and humic acid (HA) have been proposed to dominate the sorption behavior of phenanthrene in sediment. Nevertheless, little is known about the sorption mechanism that related to particle-scale by spiking of BC and HA in sediment particle size fractions. In this study, sorption isotherms for phenanthrene were determined in four particle-size sediment fractions (<2 μm, 2-31 μm, 31-63 μm and >63 μm) that amended with BC and HA, or not. The fitting results by Freundlich model indicated that the sediment particle size fractions amended with BC increased the sorption capacity and affinity for phenanthrene. Sediment coarser size fractions (31-63 μm and >63 μm) by spiking of BC contributed higher to sorption capacity factor (KF) and nonlinearity factor (n) than the finer size fractions (2-31 μm and <2 μm). By contrast, the sediment particle size fractions amended with HA enhanced the sorption distribution coefficient (Kd), but reduced the sorption affinity for phenanthrene. All these phenomena are obviously affected by the distribution of heterogeneous organic matter that related to sediment particle-scale. Results of this work could help us better understand the impact of increased BC and HA content in sediments on the sorption of hydrophobic organic pollutants (HOCs) and predict the fate of HOCs in offshore sediments due to tidal action.
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Affiliation(s)
- Yan Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; Kunming Institute of Eco-Environmental Sciences, Kunming, 650032, China
| | - Pingzhou Duan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Lixin Jiao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Jia He
- Kunming Institute of Eco-Environmental Sciences, Kunming, 650032, China
| | - Shuai Ding
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
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12
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Mun H, Ri C, Liu Q, Tang J. Characteristics of ball-milled PET plastic char for the adsorption of different types of aromatic organic pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:77685-77697. [PMID: 35680752 DOI: 10.1007/s11356-022-21143-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Ball-milled plastic char (BMPC) was manufactured by ball-milling of native plastic char (PC) that was synthesized via slow pyrolysis of polyethylene terephthalate (PET) water bottle waste, and its adsorption characteristics of aqueous phenanthrene (PHE), phenol, and 2,4,6-trichlorophenol (2,4,6-TCP) and its possible mechanisms were investigated. With the increase of PC pyrolysis temperature, the specific surface area of BMPC increased obviously, forming larger functional groups compared to PC. Boehm titration showed that total acidic groups of BMPC decreased significantly with the increase of pyrolysis temperature. The sorption kinetics of three adsorbates was adequately simulated by pseudo-second-order model (R2 > 0.99). Langmuir model fitted well the adsorption isotherms of PHE and phenol, while Freundlich model simulated the adsorption isotherm of 2,4,6-TCP better. The adsorption amount of PHE, phenol, and 2,4,6-TCP increased significantly as the pyrolysis temperature increased. The maximum BMPC adsorption capacity reached 21.9 mg·g-1 (for PHE), 106 mg·g-1 (for phenol), and 303 mg·g-1 (for 2,4,6-TCP) at 25 °C in aqueous solution. FTIR analysis suggested that surface sorption-based π-π interaction was a dominant mechanism of PHE adsorption; meanwhile, H-bonding between O-containing groups on BMPC and hydroxyl groups of adsorbates was responsible for phenol and 2,4,6-TCP removal. This paper shows that BMPC can be used as adsorbent for treating aromatic compounds in aqueous environment and has an economic worth of application.
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Affiliation(s)
- Hyokchol Mun
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
- Institute of Natural Energy, State Academy of Sciences, Pyongyang, North Korea
| | - Cholnam Ri
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
- Institute of Microbiology, State Academy of Sciences, Pyongyang, North Korea
| | - Qinglong Liu
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
- Key Laboratory of Pollution Process and Environmental Criteria (Ministry of Education), Tianjin, 300350, China
- Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin, 300350, China
| | - Jingchun Tang
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
- Key Laboratory of Pollution Process and Environmental Criteria (Ministry of Education), Tianjin, 300350, China.
- Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin, 300350, China.
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13
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Tian YX, Guo X, Ma J, Liu QY, Li SJ, Wu YH, Zhao WH, Ma SY, Chen HY, Guo F. Characterization of biochar-derived organic matter extracted with solvents of differing polarity via ultrahigh-resolution mass spectrometry. CHEMOSPHERE 2022; 307:135785. [PMID: 35870614 DOI: 10.1016/j.chemosphere.2022.135785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 06/10/2022] [Accepted: 07/17/2022] [Indexed: 06/15/2023]
Abstract
In recent years, biochar, a porous carbon-based material, has gained attention for its application prospects in contaminated soil remediation and soil improvement. Biochar-derived organic matter has a key role in influencing the migration and transformation of soil elements and pollutants. However, existing research concerning the molecular characteristics of biochar-derived organic matter is limited. Here, we used four polar solvents - dichloromethane (CH2Cl2), acetone (CH3COCH3), methanol (CH3OH), and distilled water (H2O) - to extract organic matter from soybean straw biochar and wheat straw biochar by accelerated solvent extraction (ASE). We characterized the extracts using Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). We found considerable differences in organic matter according to the extraction solvents; such differences were related to the polarity of the solvent, as well as intermolecular forces between the solvent and organic matter. CH3OH extracted the most biochar-extractable organic matter components because CH3OH can weaken or destroy oxygen bridge bonds in biochar and form hydrogen bonds with small-molecule organic compounds. CH3OH and H2O have strong extraction capacity for compounds containing heteroatoms. CH2Cl2-extractable organic matter is relatively labile and bioavailable, while CH3OH- and H2O-extractable organic matters are relatively stable. In addition, the binding capacity of biochar-derived organic matter for minerals and pollutants differed among fractions, in part because of differences in molecular weight, atomic O/C and H/C ratios, heteroatom distribution, and biomolecular compounds present in biochar-derived organic matter. The findings in this study help to select appropriate extractants to analyze biochar-derived organic matter for various research purposes, and provides a theoretical basis for biochar-based remediation of contaminated soil.
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Affiliation(s)
- Y X Tian
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - X Guo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; School of Environmental, Liaoning University, Shenyang, 110036, China
| | - J Ma
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Q Y Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; School of Earth Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | - S J Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; School of Environmental, Liaoning University, Shenyang, 110036, China
| | - Y H Wu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - W H Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - S Y Ma
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; College of Environmental and Resource Sciences, Shan Xi University, Shan Xi, 030006, China
| | - H Y Chen
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - F Guo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
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14
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Wu D, Ren D, Li Q, Zhu A, Song Y, Yin W, Wu C. Molecular linkages between chemodiversity and MCPA complexation behavior of dissolved organic matter in paddy soil: Effects of land conversion. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 311:119949. [PMID: 35970345 DOI: 10.1016/j.envpol.2022.119949] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/27/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Complexation of dissolved organic matter (DOM) plays a crucial role in regulating the fate and risk of agrochemicals. Here, taking a toxic herbicide MCPA (4-chloro-2- methylphenoxyacetic acid) as the target, the effect of land conversion on complexation behavior of DOM to agrochemicals was investigated in paddy soil. Furthermore, the mechanisms were explored in a new perspective of DOM chemodiversity. Soil DOMs were selected from four long-term cropping systems, including paddy field (PF), vegetable field (VF), rice-vegetable rotation (RV) and abandoned land (AL). The results showed that the DOMs in PF and AL were rich in hydrophilic substances (e.g., carbohydrates or protein-like molecules) with low aromaticity. However, after converting PF to VF and RV, abundant aromatic macromolecules and aliphatic alkanes were observed in DOM. Due to those changes in DOM chemodiversity, the binding site and capability of DOM were highest in VF and RV, and were positively correlated with DOM aromaticity, MW, humus and polar groups (e.g., amino). This was because the complexation of "DOM-MCPA" was static binding via ligand exchange and H-bonding among polar groups and hydrophobic interaction among aromatic skeletons. The EEM-PARAFAC confirmed that microbial humic-like substances dominated the complexation of DOM rather than terrestrial humic-like and tryptophan-like matters. The 2D-COS analysis further revealed that the complexation of DOM preferentially occurred in amino, polysaccharide C-O and aliphatic C-H for PF and AL, but in aromatic C=C, amide C=N for RV and VF. In summary, these findings provide molecular insight into the effect of land conversion on DOM complexation activity, which highlight the importance of DOM chemodiversity. These results will contribute to the risk assessments of agrochemicals in paddy soil.
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Affiliation(s)
- Dongming Wu
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, PR China; National Agricultural Experimental Station for Agricultural Environment, Tropical Agro-ecosystem, National Observation and Research Station, Danzhou, 571737, PR China
| | - Dong Ren
- College of Environmental Science and Engineering, China West Normal University, Nanchong, 637009, PR China
| | - Qinfen Li
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, PR China; National Agricultural Experimental Station for Agricultural Environment, Tropical Agro-ecosystem, National Observation and Research Station, Danzhou, 571737, PR China; Hainan Key Laboratory of Tropical Eco-circuling Agriculture, Haikou, 571101, PR China
| | - Anhong Zhu
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, PR China
| | - Yike Song
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, PR China
| | - Wenfang Yin
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, PR China
| | - Chunyuan Wu
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, PR China; National Agricultural Experimental Station for Agricultural Environment, Tropical Agro-ecosystem, National Observation and Research Station, Danzhou, 571737, PR China; Hainan Engineering Research Center for Non-point Source and Heavy Metal Pollution Control, Haikou, 571101, PR China.
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15
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Zhang Y, Kong X, Yang Y, Ran Y. Role of the sedimentary organic matter structure and microporosity on the degradation of nonylphenol by potassium ferrate. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 309:119740. [PMID: 35817300 DOI: 10.1016/j.envpol.2022.119740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 07/02/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
In this study, the role of organic matter structure and microporosity in the adsorption and degradation of radioactive nonylphenol in sediments treated with potassium ferrate solutions was investigated. The demineralized fractions and acid non-hydrolyzable fractions were isolated and characterized via advanced solid-state 13C nuclear magnetic resonance and CO2 gas adsorption technology, respectively. Radioactive nonylphenol in the sediments was also fractionated into 14CO2, water-soluble residues, extractable residues, and strongly bound residues after treatment with potassium ferrate. A first-order, two-compartment kinetic model well described the mineralization and degradation kinetics of radioactive nonylphenol in the sediment (R2 > 0.99). The degradation percentages of spiked nonylphenol were highly negatively correlated with aromatic carbon, aliphatic carbon, and microporosity estimated from acid-non-hydrolyzable fractions in the bulk sediments (R2 > 0.82, p < 0.01). The percentages of adsorbed parent nonylphenol residues were highly positively correlated with aromatic carbon, aliphatic carbon, and microporosity estimated from acid-non-hydrolyzable fractions in the bulk sediments (R2 > 0.90, p < 0.01). The parent nonylphenol compound desorbed into the aqueous phase and was completely degraded. This study is the first to demonstrate the important role of aromatic carbon, aliphatic carbon, and microporosity in acid non-hydrolyzable fractions on the degradation of nonylphenol during the potassium ferrate oxidation treatment process.
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Affiliation(s)
- Yongli Zhang
- State Key Laboratory of Organic Geochemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xianglan Kong
- State Key Laboratory of Organic Geochemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Yang
- State Key Laboratory of Organic Geochemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Yong Ran
- State Key Laboratory of Organic Geochemistry, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China.
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16
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Duan P, Jiao L, He J, Yang Y. Effect of dissolved organic matter and heavy metals ions on sorption of phenanthrene at sedimentary particle scale. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129175. [PMID: 35643001 DOI: 10.1016/j.jhazmat.2022.129175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 05/10/2022] [Accepted: 05/15/2022] [Indexed: 06/15/2023]
Abstract
Human activities significantly increase the input of offshore heavy metals and organic pollutants. Although particle-scale and heterogeneous organic matters are fundamentally important to the fate of hydrophobic organic compounds (HOCs), deep understanding of the adsorption mechanism of HOCs on soil/sediment particles under the influence of heavy metal and organic pollution input is needed. This study investigates the effects of exotic DOM and heavy metals ions on the phenanthrene adsorption on sediment fractions. The adsorption experiments demonstrated that exotic DOM increased phenanthrene adsorption amount of sediment, with the greatest enhancement on clay particles (<2 µm). Nevertheless, the mechanism was differentiated accordingly to particle dimensions in terms of increased binding coefficients and mobility of phenanthrene. Furthermore, the introduction of heavy metals considerably enhanced the nonlinear sorption of phenanthrene. The Freundlich exponent N reduced by 0.01-0.24 when adding Cu2+, Zn2+ and Pb2+, especially for coarse particles (31-63 µm) fraction. In comparison, the enhancement of nonlinearity adsorption by Cu2+ and Zn2+ is significantly lower than Pb2+ ions. To our knowledge, the particle-scale study broadens the horizon of environmental fate and ecological risk of HOCs in intertidal regions, which is significantly affected by tidal action.
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Affiliation(s)
- Pingzhou Duan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China
| | - Lixin Jiao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China; Institute of Water Environment Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China.
| | - Jia He
- Kunming Institute of Eco-Environmental Sciences, Kunming, Yunnan 650032, People's Republic of China
| | - Yan Yang
- Kunming Institute of Eco-Environmental Sciences, Kunming, Yunnan 650032, People's Republic of China
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17
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Peng XX, Gai S, Cheng K, Yang F. Roles of humic substances redox activity on environmental remediation. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:129070. [PMID: 35650747 DOI: 10.1016/j.jhazmat.2022.129070] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 05/01/2022] [Accepted: 05/02/2022] [Indexed: 06/15/2023]
Abstract
Humic substances (HS) as representative natural organic matters and the most common organic compounds existing in the environment, has been applied to the treatment and remediation of environmental pollution. This review systematically introduces and summarizes the redox activity of HS for the remediation of environmental pollutants. For inorganic pollutants (such as silver, chromium, mercury, and arsenic), the redox reaction of HS can reduce their toxicity and mobilization, thereby reducing the harm of these pollutants to the environment. The concentration and chemical composition of HS, environmental pH, ionic strength, and competing components affect the degree and rate of redox reactions between inorganic pollutants and HS significantly. With regards to organic pollutants, HS has photocatalytic activity and produces a large number of reactive oxygen species (ROS) under the light which reacts with organic pollutants to accelerate the degradation of organic pollutants. Under the affection of HS, the redox of Fe(III) and Fe(II) can enhance the efficiency of Fenton-like reaction to degrade organic pollutants. Finally, the research direction of HS redox remediation of environmental pollution is prospected.
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Affiliation(s)
- Xiong-Xin Peng
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China
| | - Shuang Gai
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China
| | - Kui Cheng
- Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; College of Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Fan Yang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China; Joint Laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China.
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18
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Nguyen HVM, Lee DH, Lee HS, Shin HS. Structural characteristics of sediment humins from South Korean lakes and their phenanthrene binding compared to other carbon sources. ENVIRONMENTAL RESEARCH 2022; 211:113037. [PMID: 35248562 DOI: 10.1016/j.envres.2022.113037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/14/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Sediment humins are extremely important for binding hydrophobic organic contaminants in rivers and lakes. Nonetheless, little is known about their structure and binding. We, therefore, examined the structure and phenanthrene sorption affinity of sediment humin samples upstream, midstream, and downstream from two artificial lakes in South Korea by using the elemental 13C-NMR analysis, Freundlich model, and Langmuir model. The characteristics and phenanthrene sorption affinity of sediment humins were also compared with those of sediment humic acids from similar origins as well as soil humins/humic acids in South Korea from previous studies by using principal component analysis. In both lakes, downstream sediment humins exhibited lower N/C, O/C, and (N + O)/C ratios, lower internal oxidation, and higher aliphaticity due to the presence of long-chain aliphatic compounds generated during anaerobic decomposition. The principal component analysis results also showed that C,H-alkyl, O-alkyl, and polar organic carbon contents were significantly different when comparing the up-mid stream and downstream sediment samples in Daecheong Lake. In addition, midstream sediment humin in Andong Lake presented higher C,H-alkyl and lower polar organic carbon contents compared to those of up-downstream samples. In both lakes, the sorption coefficient and adsorption isotherm linearity were positively correlated with the C,H-alkyl content and negatively correlated with the O-aryl content. Similar to C,H-alkyl and POC, C,H-alkyl, and (N + O)/C had an extremely high correlation coefficient when predicting the sorption coefficient (Freundlich model) and the maximum adsorption capacity (Langmuir model) of sediment humins. Sediment humins had higher C,H-alkyl contents and lower sorption coefficients than those of sediment humic acids and soil humins/humic acids. These findings provide key information for monitoring water quality and polycyclic aromatic hydrocarbon contamination in South Korean lake sediments.
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Affiliation(s)
- Hang V-Minh Nguyen
- Department of Environment Energy Engineering, Seoul National University of Science & Technology, 232 Gongneung-ro, Seoul, 01811, South Korea
| | - Doo-Hee Lee
- Mass Spectrometer Laboratory, National Instrumentation Center for Environmental Management, 1 Gwanak-ro, Seoul, 08826, South Korea
| | - Han-Saem Lee
- Department of Environment Energy Engineering, Seoul National University of Science & Technology, 232 Gongneung-ro, Seoul, 01811, South Korea
| | - Hyun-Sang Shin
- Department of Environment Energy Engineering, Seoul National University of Science & Technology, 232 Gongneung-ro, Seoul, 01811, South Korea.
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Huang M, Liao Z, Li Z, Wen J, Zhao L, Jin C, Tian D, Shen F. Effects of pyrolysis temperature on proton and cadmium binding properties onto biochar-derived dissolved organic matter: Roles of fluorophore and chromophore. CHEMOSPHERE 2022; 299:134313. [PMID: 35292275 DOI: 10.1016/j.chemosphere.2022.134313] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 02/11/2022] [Accepted: 03/11/2022] [Indexed: 06/14/2023]
Abstract
Understanding the environmental behavior of biochar-derived dissolved organic matter (BDOM) is crucial for promoting the extensive utilization of biochar and meeting the carbon neutrality targets. However, limited studies focused on the binding mechanism of protons and Cd with DOM released from biochar produced at different pyrolysis temperatures. By combining excitation-emission matrix spectroscopy and parallel factor analysis, we found that the humic-like fluorophores in BDOM had higher aromaticity, molecular weight, and contents of carboxylic and phenolic groups relative to the protein-like fluorophores. Conversely, the protein-like fluorophores exhibited a stronger binding affinity for Cd than humic-like fluorophores. With the pyrolysis temperature increased from 300 °C to 500 °C, the quenching effects of Cd on the protein-like components were enhanced significantly. Their fluorescence intensities could be quenched up to 51.64%. The results of ultraviolet-visible absorbance spectroscopy and differential absorbance spectroscopy showed that the carboxylic-like and phenolic-like chromophores were involved in the protons and Cd binding process of BDOM. The binding ability of phenolic-like chromophores with Cd was reduced as a function of increasing pyrolysis temperature. These findings implied that these carboxylic and phenolic groups were mainly contained in the non-fluorescent components. Besides, protons and Cd could also induce inter-chromophore interactions in BDOM, and the interaction was proportional to the pyrolysis temperature. These results clearly demonstrated the pyrolysis temperature-dependent changes in the protons and Cd binding properties of BDOM. More importantly, the possible risk of Cd mobility caused by the protein-like components in BDOM cannot be ignored when the biochar was applied in contaminated soils. This research extends our knowledge of the application potentiality of biochar in heavy metal polluted soil.
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Affiliation(s)
- Mei Huang
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China
| | - Zhi Liao
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China
| | - Zhongwu Li
- College of Resources and Environmental Sciences, Hunan Normal University, Changsha, 410081, PR China; College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
| | - Jiajun Wen
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Li Zhao
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China
| | - Changsheng Jin
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Dong Tian
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China
| | - Fei Shen
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, PR China.
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20
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The Addition of Biochar and Hyper-Thermal Inoculum Can Regulate the Fate of Heavy Metals Resistant Bacterial Communities during the Livestock Manure Composting. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8050207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the present investigation the effects of biochar and hyper-thermal inoculum on the heavy-metal-resistant bacteria (HMRB) during livestock manure composting were studied. An experiment was performed on composting livestock manure and wheat straw amended with biochar and hyper-thermal inoculum. Physicochemical properties, enzyme activity, heavy metals (HMs), and bacterial activities were monitored, and a comprehensive assessment was analyzed during the composting process. The results showed that the dominant phyla of Proteobacteria, Bacteroidota, Actinobacteriota, and Chloroflexi were enriched, but this was not the case with Firmicutes. The abundance of Galbibacter, Thermobifida, Sphaerobacter, and Actinomadura was significantly different in CT15 and BHCT15. In addition, this study showed that the selected factors are less correlated with HMRB compared with the CT group. Therefore, this study could provide new insights into the effect of biochar and hyper-thermal inoculum amendments on the fate of HMRB under HMs and high temperature stress during livestock manure composting.
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Chen M, Zhao X, Wu D, Peng L, Fan C, Zhang W, Li Q, Ge C. Addition of biodegradable microplastics alters the quantity and chemodiversity of dissolved organic matter in latosol. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 816:151960. [PMID: 34843778 DOI: 10.1016/j.scitotenv.2021.151960] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/05/2021] [Accepted: 11/21/2021] [Indexed: 06/13/2023]
Abstract
Dissolved organic matter (DOM) chemodiversity plays an important role in regulating nutrient cycles and contaminant behavior in soil. However, how biodegradable microplastic (MPs) affect the DOM chemodiversity is still unknown, although developing biodegradable plastics are regarded as a promising strategy to minimize the risks of MPs residues in soil. Here, with the common poly (butylene adipate-co-terephthalate) (PBAT) as the model, the molecular effect of biodegradable MPs on soil DOM was explored by adding 0%, 5% and 10% (w/w) of PBAT to tropical latosol, respectively. The results showed that PBAT addition increased microbial activity and exoenzyme activity (e.g., rhizopus oryzae lipase, invertase and cellulose). As a result, the quantity and chemodiversity of soil DOM were changed. The multispectroscopic characterization showed that PBAT addition significantly increased the DOC molecules in soil, including condensed aromatic-like substances and carbohydrates. In contrast, the TDN molecules with high bioavailability and low aromaticity, such as amino acids, were decreased. The multivariate statistical analysis indicated that there were three mechanisms that drove the shift in DOM chemodiversity. Firstly, the degradation of PBAT by rhizopus oryzae lipase facilitated the release of exogenous aromatic molecules. Secondly, PBAT decomposition stimulated the selective consumption of native N-rich molecules by soil microbes. Thirdly, PBAT accelerated the enzymatic transformation of native aliphatic CHx and cellulose toward humic substances. In addition, concentration effect was also observed in the study that high-concentration PBAT were more likely to trigger the molecular shift in DOM chemodiversity. These findings provided a new insight into the impact of biodegradable MPs on soil DOM chemodiversity at molecular level, which will be beneficial to understanding the fate and biochemical reactivity of DOM in MPs-polluted soil.
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Affiliation(s)
- Miao Chen
- College of Ecology and Environment, Hainan University, Haikou 570228, China; Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou 571737, China
| | - Xiongwei Zhao
- College of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Dongming Wu
- Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou 571737, China
| | - Licheng Peng
- College of Ecology and Environment, Hainan University, Haikou 570228, China.
| | - Changhua Fan
- Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou 571737, China
| | - Wen Zhang
- Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou 571737, China
| | - Qinfen Li
- Hainan Key Laboratory of Tropical Eco-Circular Agriculture, Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou 571737, China.
| | - Chengjun Ge
- College of Ecology and Environment, Hainan University, Haikou 570228, China
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Jing F, Sun Y, Liu Y, Wan Z, Chen J, Tsang DCW. Interactions between biochar and clay minerals in changing biochar carbon stability. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 809:151124. [PMID: 34695458 DOI: 10.1016/j.scitotenv.2021.151124] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 10/09/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
The science-informed design of stable carbonaceous materials as 'green' soil amendment will be indispensable for improving the soil fertility and carbon sequestration ability. In this study, a series of biochars were prepared from mineral-rich cellulosic corn straw (C), lignocellulosic pine wood (P), and lignin-rich walnut shell (W) at 500 or 700 °C. Their change of carbon stability after 90-day interaction with two typical soil clay minerals (i.e., kaolinite or montmorillonite) under a field-relevant condition (mass ratio of biochar to soil clay at 1:5) was evaluated as carbon loss (%) determined by the K2CrO7-H2SO4 oxidation method. The spectroscopic analyses demonstrated that the highly graphitized and microporous W-biochars exhibited a high carbon stability (35.6-40.2% C loss) that could be further enhanced in the presence of kaolinite or montmorillonite. This promotion was probably ascribed to the transformation from the aromatic CC/CC functionality to the ester CO and methyl CH configurations on the biochar surface forming stable organo-mineral complexes (i.e., COAl) with the clay minerals. In contrast, a substantial level of labile C fraction was observed in the C- and P-biochars (e.g., 94.8% C loss of P700-M) after incubation with the clay minerals, especially for montmorillonite with high CEC, swelling capacity, and week interlayer bonding. This adverse impact was possibly attributed to the aliphatic CC/CC bonding with low oxidation resistance after co-precipitation with the clay minerals. The results of this study can provide deeper insight into the evolution of physicochemical properties, porous structure, and carbon interactions during long-term biochar application for carbon sequestration and sustainable development.
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Affiliation(s)
- Fanqi Jing
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing 100083, PR China; School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, PR China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, PR China
| | - Yuqing Sun
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, PR China
| | - Yuyan Liu
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing 100083, PR China; School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, PR China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, PR China
| | - Zhonghao Wan
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, PR China
| | - Jiawei Chen
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing 100083, PR China; School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, PR China.
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, PR China.
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Gao R, Wang H, Abdurahman A, Liang W, Lu X, Wei S, Zeng F. Insight into the hetero-interactions of 4-nonylphenol with dissolved organic matter: multiple spectroscopic methods, 1H NMR study and principal component analysis. RSC Adv 2022; 12:22416-22424. [PMID: 36105990 PMCID: PMC9364969 DOI: 10.1039/d2ra03739d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 08/01/2022] [Indexed: 11/30/2022] Open
Abstract
Understanding the interactions between heterogeneous dissolved organic matter (DOM) and nonylphenols (NPs) is essential for predicting their behavior and fate in the environment. Herein, we firstly obtained different MW-fractionated humic acids (HAs) using the ultrafiltration method. Afterward, the molecular weight (MW)-dependent interactions of HAs with 4-nonylphenol (4-NP) were analysed by excitation emission matrix (EEM) fluorescence spectroscopy, fluorescence quenching, UV-vis spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy and principal component analysis (PCA). EEM spectra indicated that the quenching mechanism was static. In the binding process, the higher MW fractions showed stronger interaction with 4-NP than the lower MW counterparts, exhibiting a clear MW-dependent interaction heterogeneity. The interaction constants for the 4-NP–HAs system were suppressed as the ionic strength decreased and pH increased, which was especially obvious in the binding of 4-NP to the lower MW-fractionated HAs. The FTIR spectra revealed that hydroxyl and aromatics were involved in the interaction process of HA fractions with 4-NP. It was also found from 1H NMR that π–π interactions between aromatic rings of 4-NP and MW-fractionated HAs were responsible for the complexation. The correlation analysis and PCA results indicated that aromaticity and MW play important roles in the interaction process and confirmed an obvious interaction heterogeneity among MW-fractionated HAs samples. This work highlighted MW-dependent interaction heterogeneities of HA, which suggested that heterogeneity in MW distribution should be taken into consideration when exploring the fate and biogeochemistry cycling of 4-NP from contaminated environments. Multiple spectroscopic methods, 1H NMR study and PCA were used to investigate the heterointeractions of 4-nonylphenol with humic acids.![]()
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Affiliation(s)
- Rui Gao
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Hao Wang
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Abliz Abdurahman
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Weiqian Liang
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Xiaotian Lu
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Shuyin Wei
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Feng Zeng
- School of Chemistry, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
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Zheng T, Hu T, Zhang J, Tang C, Duan J, Song Y, Zhang Q. Dynamics in imidacloprid sorption related to changes of soil organic matter content and quality along a 20-year cultivation chronosequence of citrus orchards. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 291:118069. [PMID: 34530243 DOI: 10.1016/j.envpol.2021.118069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/23/2021] [Accepted: 08/28/2021] [Indexed: 06/13/2023]
Abstract
The on-going and extensive use of neonicotinoids occur in orchards. However, it is still unknown whether and how orchard management affects soil properties, especially the contents and structure of soil organic matter during orchard development, and their further influences on neonicotinoid persistence. Here, surface soil samples were collected from the citrus orchards with different cultivation ages (1, 10, 14, and 20 years), and their physicochemical properties were determined. Changes in the chemical structure of soil organic matter (SOM) were furtherly examined using solid-state CP/TOSS 13C NMR. Then, the sorption isotherms of imidacloprid in these soils were investigated. The sorption coefficient (Kd) of imidacloprid at Ce of 0.05 mg/L in the orchard soils increased by 19.4-23.3%, along a 20-year chronosequence of cultivation, which should be mainly ascribed to the increase of SOM. However, the organic carbon-normalized sorption coefficient (Koc, sorption per unit mass of OM) of imidacloprid declined with increasing cultivation ages. Moreover, the polar and aliphatic domains of SOM had a significantly positive relation to the Koc of imidacloprid, suggesting its key role in governing imidacloprid sorption. The results highlighted that reasonable management measures could be adopted to control the occurrence and fate of neonicotinoids in soils, mainly by affecting the content and quality of SOM.
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Affiliation(s)
- Taihui Zheng
- Jiangxi Academy of Water Science and Engineering, Nanchang, 330029, China
| | - Tong Hu
- Key Laboratory of Poyang Lake Watershed Agricultural Resources and Ecology of Jiangxi Province, Jiangxi Agricultural University College of Land Resources and Environment, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Jie Zhang
- Jiangxi Academy of Water Science and Engineering, Nanchang, 330029, China
| | - Chongjun Tang
- Jiangxi Academy of Water Science and Engineering, Nanchang, 330029, China
| | - Jian Duan
- Jiangxi Academy of Water Science and Engineering, Nanchang, 330029, China
| | - Yuejun Song
- Jiangxi Academy of Water Science and Engineering, Nanchang, 330029, China
| | - Qin Zhang
- Key Laboratory of Poyang Lake Watershed Agricultural Resources and Ecology of Jiangxi Province, Jiangxi Agricultural University College of Land Resources and Environment, Jiangxi Agricultural University, Nanchang, 330045, China.
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25
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Xu L, Zhang J, Barnie S, Zhang H, Liu F, Chen H. New insight into the adsorption mechanism of PCP by humic substances with different degrees of humification in the presence of Cr(VI). CHEMOSPHERE 2021; 284:131223. [PMID: 34182284 DOI: 10.1016/j.chemosphere.2021.131223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 06/04/2021] [Accepted: 06/11/2021] [Indexed: 06/13/2023]
Abstract
Humic substances (HSs) have great retention effects on pentachlorophenol (PCP) migration in subsurface environment, but the adsorption mechanism of PCP by HSs with various aromatic/aliphatic moieties and acidic functional groups in the presence of Cr(VI) is still unclear. In this study, the adsorption mechanism of PCP by undissolved humic acid (HA) and humin (HM) extracted from peat, black soil, lignite and coal was investigated under the presence of Cr(VI). According to the results, HA samples had much lower adsorption capacity for hydrophobic PCP than HM samples due to their higher contents of hydrophilic polar oxygen-containing functional groups. In respect to PCP adsorption mechanism, the molecular unsaturation of HSs associated with humification degree was found to be the determinant instead of polarity. Notably, after reacting with Cr(VI), significant decreasing of PCP adsorption quantities occurred on HSs extracted from lignite and coal with higher degrees of unsaturation (H/C < 0.64), while HSs extracted from peat and black soil with lower degrees of unsaturation (H/C > 0.83) kept almost unchanged, which can be attributed to the much higher reactivity of aromatic domains of HSs for Cr(VI) reduction compared with aliphatic moieties. This indicated that the adsorption mechanism of PCP by HSs with higher and lower degrees of unsaturation might be respectively driven by π-π interaction and hydrophobic interaction. This study highlighted the diverse adsorption mechanisms of PCP on HSs with different degrees of humification, and emphasized the coexisting Cr(VI) only have significant effect on PCP adsorption by HSs with higher humification degrees instead of the lower ones.
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Affiliation(s)
- Lin Xu
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China; Northwest Engineering Corporation Limited, Xi'an, 710065, China
| | - Jia Zhang
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China.
| | - Samuel Barnie
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China; Department of Water and Sanitation, University of Cape Coast, Cape Coast, Ghana
| | - Hui Zhang
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China
| | - Fei Liu
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China
| | - Honghan Chen
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences, Beijing, 100083, China
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26
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Huang X, Xu B, Zhu S, Ma F, Jin C. Overlooked contributions of biochar-derived dissolved organic matter on the adsorption of Pb (Ⅱ): Impacts of fractionation and interfacial force. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126692. [PMID: 34329108 DOI: 10.1016/j.jhazmat.2021.126692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/10/2021] [Accepted: 07/17/2021] [Indexed: 06/13/2023]
Abstract
Comprehensive understanding of how the release of biochar-derived dissolved organic matter (BDOM) affects the immobilization of heavy metals when biochar (BC) is applied for long-term soil remediation is extremely important. In this study, BCs prepared under different pyrolysis temperatures were fractionated into residual BC (RBC), nano-sized BC (NBC), and BDOM, in order to clarify the contribution of BDOM for lead (Pb(II)) adsorption on BC and to explore the interfacial mechanisms. Results demonstrated that the adsorption capacity (Qe) of Pb(II) on BC improved from 166.1 to 423.9 mg g-1 with the increase in the pyrolysis temperature from 350 to 800 °C. The sum of Qe of Pb(II) on NBC and RBC was lower than that on BC, due to the complexation between BDOM and Pb(II) rather than pH variance and cation exchange. Ultraviolet-visible and fluorescence spectroscopy revealed that fulvic-like substances as well as small molecules with low aromaticity in BDOM underwent favorable association with Pb(II) and got re-adsorbed on RBC. With the increase in the Pb(II) concentration, the contribution of van der Waals interaction for adsorption of BDOM350-Pb complexes was improved, whereas adsorption mechanism in BDOM800-Pb complexes was more dependent on ligand exchange. This study provides mechanistic insights into the impact of BDOM on Pb(II) immobilization, which can provide valuable information for the long-term remediation of Pb-contaminated soils using BC.
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Affiliation(s)
- Xiaochen Huang
- School of Agriculture, Sun Yat-Sen University, Shenzhen 518107, PR China
| | - Bingqian Xu
- Nanjing Municipal Design and Research Institute Co., Ltd, Nanjing 210000, PR China
| | - Shishu Zhu
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Fang Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Chao Jin
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China.
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Guo X, Wu Y, Li N, Tian Y, Peng Y, Yuan D. Effects on the complexation of heavy metals onto biochar-derived WEOM extracted from low-temperature pyrolysis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 221:112456. [PMID: 34198187 DOI: 10.1016/j.ecoenv.2021.112456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/28/2021] [Accepted: 06/21/2021] [Indexed: 06/13/2023]
Abstract
Biochar-derived water-extractable organic matter (WEOM) was obtained under low-temperature pyrolysis (300 °C) using corncob as raw material. WEOM may affect the mobility and bioavailability of soil heavy metals (HMs) through complexation when biochar was used for soil HM remediation. Herein, the characteristics of complexation between HMs (Cr(III) and Cu(II)) and biochar-derived WEOM were investigated by using spectroscopic techniques in conjunction with parallel factor (PARAFAC) analysis and two-dimensional correlation spectroscopy (2D-COS). Six components were identified by PARAFAC modeling, in which protein-, fulvic- and humic-like components accounted for 48.86%, 25.63% and 25.51%, respectively. A nonlinear model was employed to determine the conditional stability constant (KM) and total ligand concentration (CL) of WEOM-HM complexes. The log KM values were in the range of 4.02-5.04 for WEOM-Cr(III) and 4.04-6.58 for WEOM-Cu(II). The 2D-COS in conjunction with log-transformed synchronous fluorescence spectroscopy (SFS) suggested that WEOM components were preferentially complexed with HMs in the following order: 433/270, 433/335, 496/270, 496/335, 370/335, 433/402, 496/402, 335/290, 402/290 for Cr(III), and 290/280, 390/280, 433/280, 496/280, 433/335, 496/335, 390/335, 433/420, 496/402, 335/290, 316/290 for Cu(II). The results of 2D-FTIR-COS suggested a preferential bonding of Cr(III) to the C-N group of alkyl, and Cu(II) to the CO group of alcohols, ethers and esters. Meanwhile, the CO group of ethers and the CN group of alkyl indicated preferential susceptibilities for the addition of Cr(III) and Cu(II) at different concentrations. In addition, protein-like components had remarkably higher total ligand concentration (CL) than fulvic- or humic-like components.
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Affiliation(s)
- Xujing Guo
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China
| | - Yi Wu
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China
| | - Nanxi Li
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China
| | - Yuanyuan Tian
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China
| | - Yuyao Peng
- College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China
| | - Donghai Yuan
- Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China.
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28
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Wu D, Ren C, Wu C, Li Y, Deng X, Li Q. Mechanisms by which different polar fractions of dissolved organic matter affect sorption of the herbicide MCPA in ferralsol. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125774. [PMID: 33857809 DOI: 10.1016/j.jhazmat.2021.125774] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/25/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Exogenous dissolved organic matter (DOM) modifies the sorption of 4-chloro-2-methylphenoxyacetic acid (MCPA, a polar herbicide) in soil. However, how the chemodiversity and diverse fractions of DOM affect MCPA sorption is still unknown. Here, DOM was extracted from compost and rice straw; the structure-activity correlations between DOM chemodiversity and their effects on MCPA sorption were investigated by redundancy analysis. Moreover, the mechanism involved was explored by spectroscopic techniques, microbeam and modeling. DOM mainly affected MCPA sorption by altering soil surface properties and MCPA complexed form. Hydrophobic neutral (HON) and acid insoluble matter (AIM) were the fractions of DOM that most inhibited MCPA sorption through soil pore blockage, and were related to the humic-like substances with high aromaticity and large molecular weight. The hydrophobic acid fraction (HOA) only showed an intermediate inhibition on the sorption, although the largest competitive sorption occurred. This was because HOA contained abundant aromatic acid and polar groups with moderate polarity. Thus, the reduced effect caused by competitive sorption was partly compensated by the greatest co-sorption by HOA. The hydrophilic matter (HIM) had the weakest inhibition on MCPA sorption, because this fraction was rich in simple sugars, poly- and oligosaccharides, but lacked aryl groups. The results will aid in the risk assessments and prevention of MCPA in DOM-introduced soil.
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Affiliation(s)
- Dongming Wu
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Changqi Ren
- Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Chunyuan Wu
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, Danzhou 571737, PR China; Hainan Engineering Research Center for Non-Point Source and Heavy Metal Pollution Control, Haikou 571101, PR China.
| | - Yi Li
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Xiao Deng
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Qinfen Li
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, Danzhou 571737, PR China; Hainan Key Laboratory of Tropical Eco-Circuling Agriculture, Haikou 571101, PR China.
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29
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Yi P, Zuo X, Lang D, Wu M, Dong W, Chen Q, Zhang L. Competitive adsorption of methanol co-solvent and dioctyl phthalate on functionalized graphene sheet: Integrated investigation by molecular dynamics simulations and quantum chemical calculations. J Colloid Interface Sci 2021; 605:354-363. [PMID: 34332409 DOI: 10.1016/j.jcis.2021.07.086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/05/2021] [Accepted: 07/16/2021] [Indexed: 12/14/2022]
Abstract
HYPOTHESIS Organic co-solvents, which are universally employed in adsorption studies of hydrophobic organic chemicals (HOCs), can inhibit HOC adsorption by competing for active sites on the adsorbent. The adsorbent structure can influence co-solvent interference of HOC adsorption; however, this effect remains unclear, leading to an incomplete understanding of the adsorption mechanism. EXPERIMENTS In this study, dioctyl phthalate (DOP) was used to investigate competitive adsorption on functionalized graphene sheet in a water-methanol co-solvent system through molecular dynamics simulations and quantum chemical calculations. FINDINGS The simulations showed that the functional groups in the graphene defects had a strong adsorption affinity for methanol. The adsorbed methanol occupied a large number of active sites at the graphene center, thereby weakening DOP adsorption. However, the methanol adsorbed at the graphene edges could not compete with DOP for the active sites. -COOH had the strongest binding affinity for methanol among the functional groups and thus predominantly controlled the interaction between graphene and methanol. This study makes an innovative contribution toward understanding the competitive adsorption of methanol and DOP on functionalized graphene sheet, especially in visualizing the competition for active sites, and provides theoretical guidance for the removal of HOCs and practical application of graphene.
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Affiliation(s)
- Peng Yi
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
| | - Xiangzhi Zuo
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
| | - Di Lang
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
| | - Min Wu
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
| | - Wei Dong
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China
| | - Quan Chen
- Yunnan Provincial Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, Yunnan, China.
| | - Lijuan Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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Huang M, Li Z, Wen J, Ding X, Zhou M, Cai C, Shen F. Molecular insights into the effects of pyrolysis temperature on composition and copper binding properties of biochar-derived dissolved organic matter. JOURNAL OF HAZARDOUS MATERIALS 2021; 410:124537. [PMID: 33246820 DOI: 10.1016/j.jhazmat.2020.124537] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/11/2020] [Accepted: 11/07/2020] [Indexed: 06/12/2023]
Abstract
Biochar-derived dissolved organic matter (BDOM), which has a substantial impact on the environmental behavior of heavy metals, is critical for understanding the environmental efficacy of biochar. Here, we used a suite of advanced spectroscopic and mass spectroscopic methods to investigate the relationship among the pyrolysis temperature of biochar, composition of BDOM, and interactions of BDOM with Cu. The binding affinity of BDOM and Cu showed incredibly increase, with the increasing pyrolysis temperature (300-500 °C) which promoted the release of condensed aromatic compounds and oxygen-containing functional groups from biochar into dissolved phase. A notable difference in the sequences binding with Cu was occurred during the changing pyrolysis temperature. The amide only involved in the binding process between Cu and BDOM at low-temperature (300 and 400 °C), whereas phenolic only associated with the such binding process at high-temperature (500 °C). Apart from this, the carboxyl and polysaccharides took part in the binding process of Cu with BDOM, no matter how higher the temperature is. A further analysis by X-ray absorption spectroscopy revealed that bidentate carboxylic-Cu complexes appear to be the predominant binding pattern for Cu to BDOM. Our results might contribute to provide novel information for the environment applications of biochar.
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Affiliation(s)
- Mei Huang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China; Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130 Sichuan, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130 Sichuan, PR China
| | - Zhongwu Li
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China; College of Resources and Environmental Sciences, Hunan Normal University, Changsha 410081, PR China.
| | - Jiajun Wen
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Xiang Ding
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Mi Zhou
- College of Resources and Environmental Sciences, Hunan Normal University, Changsha 410081, PR China
| | - Changqing Cai
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Fei Shen
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130 Sichuan, PR China; Rural Environment Protection Engineering & Technology Center of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130 Sichuan, PR China.
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31
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Luo H, Wang Y, Wen X, Cheng S, Li J, Lin Q. Key roles of the crystal structures of MgO-biochar nanocomposites for enhancing phosphate adsorption. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 766:142618. [PMID: 33069464 DOI: 10.1016/j.scitotenv.2020.142618] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/27/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
The affinity of biochar (BC) adsorbing phosphate was weak, while generation of magnesium oxide (MgO)-BC nanocomposites that transformed the crystal structures of BC would change the adsorption processes in improving the phosphate adsorption. Hereon, four different crystal structure of absorbents were selected to illustrate why the crystal structures and surface properties of absorbents were of great importance for the phosphate adsorption. The results showed that MgO/KBC with higher combination degree between MgO and KBC could change the normal crystal structure (MgO/KBC1, MgO phase (dominant)) to C-Mg-O phase (dominant). Therefore, MgO/KBC could achieve highest adsorption rate (k2, 8.059 g mg-1 min-1) and qm (maximal adsorption capacity, 121.950 mg g-1) for phosphate adsorption among absorbents, and even it had high anti-interference capacity for anions and natural organic matter (NOM). The mechanisms of MgO/KBC for phosphate adsorption were hydrogen-bond interaction, inner-sphere complexation and surface chemical adsorption; adsorption of phosphate on MgO/KBC1 was mainly controlled by inner-sphere complexation (Mg-O-PO3H2-, Mg-O-PO3H2- species). In addition, the adsorbability of MgO/KBC for phosphate could be restored after recalcination, which further proved that an efficient nanocomposite, calcinated from waste biomass (fallen leaves), was proposed to control eutrophication.
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Affiliation(s)
- Haoyu Luo
- Guangdong Provincial Engineering Technology Research Center for Life and Health of River&Lake, Pearl River Water Resources Research Institute, Pearl River Water Resources Commission of the Ministry of Water Resources, Guangzhou 510611, China; Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yijie Wang
- Guangdong Provincial Engineering Technology Research Center for Life and Health of River&Lake, Pearl River Water Resources Research Institute, Pearl River Water Resources Commission of the Ministry of Water Resources, Guangzhou 510611, China
| | - Xiaoqing Wen
- Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Shuailong Cheng
- Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Jie Li
- Guangdong Provincial Engineering Technology Research Center for Life and Health of River&Lake, Pearl River Water Resources Research Institute, Pearl River Water Resources Commission of the Ministry of Water Resources, Guangzhou 510611, China.
| | - Qintie Lin
- Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
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Zhang X, Cai X, Wang Z, Yang X, Li S, Liang G, Xie X. Insight into metal binding properties of biochar-derived DOM using EEM-PARAFAC and differential absorption spectra combined with two-dimensional correlation spectroscopy. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:13375-13393. [PMID: 33184787 DOI: 10.1007/s11356-020-11573-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/05/2020] [Indexed: 06/11/2023]
Abstract
A large amount of biochar-derived dissolved organic matter (BDOM) will be released into the environment with biochars application into repairing soil/water, which may alter the fate and transport of contaminants. In this study, four DOM samples were extracted from cauliflower root biochar (CRBC), reed straw biochar (RSBC), corn stalks biochar (CSBC), and potato stalk biochar (PSBC). Excitation-emission matrix combined with parallel factor (EEM-PARAFAC) analysis, differential absorbance spectra (DAS), and two-dimensional correlation spectroscopy (2D-COS) analysis were applied to explore the complexation property of BDOM with metals. DAS showed sites heterogeneity within the DOM pool for metals complexing. Humic-like and fulvic-like substances were main fluorescent components identified by EEM-PARAFAC. 2D-COS analysis revealed that polysaccharides and aliphatic firstly responded to Pb(II) binding with CRBC-derived DOM and three other biochar-derived DOM, respectively. While aliphatic groups, aromatic N=O, and polysaccharides gave the fastest response to Cu(II) binding with CRBC, RSBC, and the other two biochar-derived DOM, respectively.
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Affiliation(s)
- Xiaoli Zhang
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Tianshui South Road 222, Lanzhou, 730000, Gansu, China
| | - Xuewei Cai
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Tianshui South Road 222, Lanzhou, 730000, Gansu, China
| | - Zhaowei Wang
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Tianshui South Road 222, Lanzhou, 730000, Gansu, China.
| | - Xing Yang
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Tianshui South Road 222, Lanzhou, 730000, Gansu, China
| | - Shan Li
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Tianshui South Road 222, Lanzhou, 730000, Gansu, China
| | - Guiwei Liang
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Tianshui South Road 222, Lanzhou, 730000, Gansu, China
| | - Xiaoyun Xie
- Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Tianshui South Road 222, Lanzhou, 730000, Gansu, China
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Ruzickova J, Koval S, Raclavska H, Kucbel M, Svedova B, Raclavsky K, Juchelkova D, Scala F. A comprehensive assessment of potential hazard caused by organic compounds in biochar for agricultural use. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123644. [PMID: 33264861 DOI: 10.1016/j.jhazmat.2020.123644] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/06/2020] [Accepted: 07/31/2020] [Indexed: 06/12/2023]
Abstract
Great attention has been paid to using biochar as soil conditioner and bio-accumulator. Nevertheless, biochar application in agriculture might cause a potential hazard to ecosystems, considering that toxic organic pollutants present in biochar may enter the environment. European Biochar Certificate (EBC) set certain criteria for biochar production. Achieving the EBC established values of the molar ratio of H/Corg <0.7 and O/Corg <0.4, does not ensure that biochar will not cause phytotoxicity. The results of root growth inhibition of Sinapis alba were in the range of 9% (eucalyptus wood biochar) to 82% (maize biochar). Phytotoxicity of biochar was possibly caused by the presence of water-soluble organic compounds. In total, 62 organic compounds were identified in the leachate from noncertified biochar and 35 organic compounds in the leachate from certified biochar. Biochar safety, in terms of the presence of organic compounds, can be recognised by the evaluation of the ratio of organic carbon (OC) and elemental carbon (EC). Biochar with the highest phytotoxicity showed the ratio between OC/EC > 0.1, inhibition of Sinapis alba <30% was observed with OC/EC < 0.02. To achieve Sinapis alba inhibition <20%, these parameters should be met: volatile matter (VM) <30%; concentration of OC < 4%; aromaticity ratio AL/AR < 0.35.
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Affiliation(s)
| | - S Koval
- ENET Centre VSB-TU Ostrava, Czech Republic.
| | | | - M Kucbel
- ENET Centre VSB-TU Ostrava, Czech Republic
| | - B Svedova
- ENET Centre VSB-TU Ostrava, Czech Republic
| | | | - D Juchelkova
- Faculty of Electrical Engineering and Computer Science VSB-TU Ostrava, Czech Republic
| | - F Scala
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale Università degli Studi di Napoli Federico II, Italy
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Humic Acid Mitigates the Negative Effects of High Rates of Biochar Application on Microbial Activity. SUSTAINABILITY 2020. [DOI: 10.3390/su12229524] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective: Biochar and a commercial humic acid-rich product, Humac (modified leonardite), represent soil amendments with the broad and beneficial effects on various soil properties. Their combination has been scarcely tested so far, although the positive impact of their interaction might be desirable. Materials and Methods: The dehydrogenase activity (DHA), microbial biomass carbon (Cmic), soil respiration (basal and substrate-induced), enzyme activities, total carbon (Ctot), and both shoot and root biomass yield were measured and compared in the short-term pot experiment with the lettuce seedlings. The following treatments were tested: the unamended soil (control), the Humac-amended soil (0.8 g·kg−1), the biochar-amended soil (low biochar 32 g·kg−1, high biochar 80 g·kg−1), and the soil-amended with biochar + Humac. Results: The effect of both amendments on the soil pH was insignificant. The highest average values of Ctot and Cmic were detected in high biochar treatment and the highest average values of basal and substrate-induced respiration (glucose, glucosamine, alanine) were detected in the low biochar treatment. The phosphatase activity and fresh and dry lettuce aboveground biomass were the highest in the low biochar + Humac treatment. Conclusions: Even though the combination of both biochar + Humac decreased the microbial activities in the amended soil (Cmic, DHA, enzymes, substrate-induced respiration) at the low biochar dose, they mitigated the detrimental effect of the high biochar dose on respiration (all the types) and the enzyme (phosphatase, arylsulphatase) activities. In contrast to the previously published research in this issue, the effects could not be attributed to the change of the soil pH.
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35
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Wang Z, An N, Shao Y, Gao N, Du E, Xu B. Experimental and simulation investigations of UV/persulfate treatment in presence of bromide: Effects on degradation kinetics, formation of brominated disinfection byproducts and bromate. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116767] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wu D, Ren C, Jiang L, Li Q, Zhang W, Wu C. Characteristic of dissolved organic matter polar fractions with variable sources by spectrum technologies: Chemical properties and interaction with phenoxy herbicide. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 724:138262. [PMID: 32272408 DOI: 10.1016/j.scitotenv.2020.138262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 03/11/2020] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
Dissolved organic matter (DOM) is ubiquitous with high biological and chemical activity. The large intake of DOM from compost, plant residues or soil can modify the behaviors of agrochemicals. Phenoxy herbicide is the third widely used herbicide around the world with both aromaticity and polarity. However, how the diverse fractions of DOM interacting with phenoxy herbicide and the underlying mechanisms remain unknown. Thus, it is crucial to investigate the heterogeneous chemical properties of DOM fractions from variable sources and explore the interactive mechanisms. In this study, polar DOM derived from compost, rice straw and soil were fractionated, and the chemical properties of fractions were analyzed by spectrum technology and the complex interaction with phenoxy herbicide was assessed by infrared spectroscopy. Results showed that hydrophobic acid (HOA) was the largest component (49.6%) in compost DOM, while hydrophilic matter (HIM) was the main component in the polar DOM from rice straw and soil. The 4-chloro-2-methylphenoxyac etic acid (MCPA) as one representative of phenoxy herbicides was used in our study, and the results showed the interaction between different DOM fractions and MCPA was heterogeneous. HOA containing abundant fulvic-like component and polar groups resulted a greatly complex interaction with MCPA mainly via hydrophobic force, ligand exchange and hydrogen bonding. Hydrophobic neutral fraction and acid-insoluble matter showed a medium interaction with MCPA as a result of enrichment with the high aromatic humic-like molecules. Inversely, no significant interaction between HIM and MCPA was observed. Our research revealed that the aromatic framework associated with polar groups in DOM dominated the interaction with phenoxy herbicide, which might affect the bioavailability, toxicity, and mobility of phenoxy herbicide.
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Affiliation(s)
- Dongming Wu
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, Danzhou 571737, PR China
| | - Changqi Ren
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Lei Jiang
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, Danzhou 571737, PR China
| | - Qinfen Li
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, Danzhou 571737, PR China.
| | - Wen Zhang
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Chunyuan Wu
- Institute of Environment and Plant Protection, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, Danzhou 571737, PR China.
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Qian X, Ma J, Weng L, Chen Y, Ren Z, Li Y. Influence of agricultural organic inputs and their aging on the transport of ferrihydrite nanoparticles: From enhancement to inhibition. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 719:137440. [PMID: 32135331 DOI: 10.1016/j.scitotenv.2020.137440] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/18/2020] [Accepted: 02/18/2020] [Indexed: 05/20/2023]
Abstract
Organic matter effectively regulates nanoparticles transport. However, little is known about the effect of agricultural organic inputs on the transport of ferrihydrite nanoparticles (FHNPs) during aging. In this study, columns were filled with sand mixed with varying proportions of pristine, water-processing, or alkali-processing biochar or swine manure and used to simulate the release of organic matter and changes in surface roughness of sand grains during field aging. The influence of these factors on FHNPs transport was investigated using column experiments. The dissolved organic matter (DOM) (0.008-24.8 mg L-1) released from agricultural organic inputs decreased the zeta potential of the FHNPs from 30.8 mV to 14.6--48.9 mV and further caused electrostatic repulsion, osmotic repulsion, and elastic-steric repulsion between FHNPs and mixed sand, thus enhancing FHNPs transport. Ferrihydrite nanoparticles transport increased with increasing content of biochar and swine manure due to the increased amount of DOM. However, with the presence of organic inputs, surface roughness up to a certain degree (the increase in specific surface area up to 4.6 m2) became the dominant inhibition factor affecting FHNPs transport. After DOM release, agricultural organic inputs decreased the enhancement of FHNPs transport; with the increase input, their rougher surface gradually increased inhibition of FHNPs transport. The strongest FHNPs retention in the alkali-processing biochar (0.2-10%) or swine manure (1-2%) mixed sand columns indicated that fully aged agricultural organic inputs strongly inhibited FHNPs transport. Our findings provided novel insights into the critical influence of agricultural organic inputs and their aging on FHNPs transport, which changed gradually from enhancement to inhibition gradually.
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Affiliation(s)
- Xiaoyan Qian
- Key Laboratory for Environmental Factors Control of Agro-Product Quality Safety, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China; Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Jie Ma
- Key Laboratory for Environmental Factors Control of Agro-Product Quality Safety, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China; Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
| | - Liping Weng
- Key Laboratory for Environmental Factors Control of Agro-Product Quality Safety, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China; Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China; Department of Soil Quality, Wageningen University, Wageningen, the Netherlands
| | - Yali Chen
- Key Laboratory for Environmental Factors Control of Agro-Product Quality Safety, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China; Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Zongling Ren
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Yongtao Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China; College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
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38
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Xu D, Hu S, Xiong Y, Yang Y, Ran Y. Importance of the structure and micropores of sedimentary organic matter in the sorption of phenanthrene and nonylphenol. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:114034. [PMID: 32014746 DOI: 10.1016/j.envpol.2020.114034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 12/14/2019] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
The demineralized fraction (DM), lipid-free fraction (LF), nonhydrolyzable organic carbon fraction (NHC), and black carbon (BC) were isolated from five marine surface sediments, and they were characterized by elemental analysis as well as CO2 and N2 adsorption techniques, respectively. The NHC fractions were characterized using advanced solid-state 13C nuclear magnetic resonance (NMR) and x-ray photoelectron spectroscopy (XPS). Then, the sorption isotherms of phenanthrene (Phen) and nonylphenol (NP) on all of the samples were investigated by a batch technique. The CO2 micropore volumes were corrected for the outer specific surface areas (SSAs) by using the N2-SSA. Significant correlations between the micropore-filling volumes of Phen and NP and the micropore volumes suggested that the micropore-filling mechanism dominated the Phen and NP sorption. Meanwhile, the (O + N)/C atomic ratios were negatively and significantly correlated with the sorption capacities of Phen and NP, indicating that the sedimentary organic matter (SOM) polarity also played a significant role in the sorption process. In addition, a strong linear correlation was demonstrated between the aromatic C and the sorption capacity of Phen for the NHC fractions. This study demonstrates the importance of the micropores, polarity, and aromaticity on the sorption processes of Phen and NP in the sediments.
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Affiliation(s)
- Decheng Xu
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou, 510640, China
| | - Shujie Hu
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou, 510640, China
| | - Yongqiang Xiong
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Yu Yang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou, 510640, China
| | - Yong Ran
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou, 510640, China.
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Sun K, Han L, Yang Y, Xia X, Yang Z, Wu F, Li F, Feng Y, Xing B. Application of Hydrochar Altered Soil Microbial Community Composition and the Molecular Structure of Native Soil Organic Carbon in a Paddy Soil. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:2715-2725. [PMID: 32003984 DOI: 10.1021/acs.est.9b05864] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The benefits and disadvantages of hydrochar incorporation into soil have been heavily researched. However, the effect of hydrochar application on the soil microbial communities and the molecular structure of native soil organic carbon (SOC) has not been thoroughly elucidated. This study conducted an incubation experiment at 25 °C for 135 days using a soil column with 0.5 and 1.5% hydrochar-amended paddy soil to explore the interconnections between changes in soil properties and microbial communities and shifts in native SOC structure using electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FT-ICR-MS) and NMR after hydrochar application. Hydrochar addition decreased the labile SOC fraction by 15.6-33.6% and increased the stable SOC fraction by 10.3-27.0%. These effects were significantly stronger for 1.5% hydrochar-treated soil. Additionally, hydrochar addition induced the native SOC with 1.0-3.0% more carbon and 6.0-13.0% higher molecular weight. The SOC in hydrochar-amended soil contained more aromatic compounds but fewer carbohydrates and lower polarity. This was resulted by a statistically significant reduction in Sphingobacterium, which was active in polycyclic aromatic hydrocarbon degradation, and an increase in Flavobacterium, Anaerolinea, Penicillium, and Acremonium, which were the efficient decomposers of labile SOC. These findings will help elucidate the potential influence of hydrochar on the carbon biogeochemical cycle in the soil.
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Affiliation(s)
- Ke Sun
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Lanfang Han
- Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Yan Yang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Xinghui Xia
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Zhifeng Yang
- Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Fengchang Wu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Fangbai Li
- Guangdong Public Laboratory of Environmental Science and Technology, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, China
| | - Yanfang Feng
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States
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40
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Liu J, Fan J, He T, Xu X, Ai Y, Tang H, Gu H, Lu T, Liu Y, Liu G. The mechanism of aquatic photodegradation of organophosphorus sensitized by humic acid-Fe 3+ complexes. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121466. [PMID: 31679891 DOI: 10.1016/j.jhazmat.2019.121466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 10/07/2019] [Accepted: 10/12/2019] [Indexed: 06/10/2023]
Abstract
Organic phosphorus is an important source of eutrophication. In this study, to understand the mechanism of organophosphorus photodegradation, humic acid-Fe3+ (HA-Fe3+) complexes were prepared as a sensitizer, and glyphosate (GP) was used as a substrate for photodegradation. The effects of the initial GP concentration, HA concentration, Fe3+ concentration and microbial factors on photodegradation were investigated. The initial concentrations of GP, HA and Fe3+ could significantly affect the degradation rate of GP. Phosphate is the main product of GP photodegradation. Based on the identification of the active species in the reaction process, t-butanol was found to have the most significant inhibitory effect on the degradation. The reaction rate after t-butanol treatment was reduced from 0.017 to 0.003. This confirmed that OH was the main oxidant in the system, which was also demonstrated by EPR spectroscopy. A possible mechanism of GP photodegradation sensitized by HA-Fe3+ complexes was revealed for the first time. The HA-Fe3+ complexes in the reaction system were photodegraded and oxidized to finally produce OH, which promotes GP photodegradation. This study facilitates understanding the phosphorus cycle in a water environment and provides a scientific basis for the restoration of eutrophic lakes.
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Affiliation(s)
- Jing Liu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People's Republic of China; College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Jiajun Fan
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People's Republic of China; College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Tianyu He
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People's Republic of China; College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Xiaofang Xu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People's Republic of China; College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Yulu Ai
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People's Republic of China; College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Haoran Tang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People's Republic of China; College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Hao Gu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People's Republic of China; College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Tao Lu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People's Republic of China; College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Yanhui Liu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People's Republic of China; College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Guo Liu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People's Republic of China; State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People's Republic of China; College of Environment and Ecology, Chengdu University of Technology, Chengdu 610059, People's Republic of China.
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Xiang L, Zeng LJ, Du PP, Wang XD, Wu XL, Sarkar B, Lü H, Li YW, Li H, Mo CH, Wang H, Cai QY. Effects of rice straw biochar on sorption and desorption of di-n-butyl phthalate in different soil particle-size fractions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 702:134878. [PMID: 31726350 DOI: 10.1016/j.scitotenv.2019.134878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/05/2019] [Accepted: 10/06/2019] [Indexed: 06/10/2023]
Abstract
Sorption of organic contaminants by biochar greatly affects their bioavailability and fate in soils. Nevertheless, very little information is available regarding the effects of biochar on sorption and desorption of organic contaminants in different soil particle-size fractions. In this study, di-n-butyl phthalate (DBP), a prevalent organic contaminant in agricultural soils, was taken as a model contaminant. The effects of biochar on DBP sorption and desorption in six particle-size fractions (i.e., coarse sand, fine sand, coarse silt, fine silt, clay, and humic acid fractions) of paddy soil were investigated using batch sorption-desorption experiments. A straw-derived biochar with high specific surface area (116 m2/g) and high content of organic matter (OM) rich in aromatic carbon (67%) was prepared. Addition of this biochar (1% and 5%) significantly promoted the sorption and retention of DBP in all the paddy soil particle-size fractions at environmentally relevant DBP concentrations (2-12 mg/L) with 1.2-132-fold increase of the Kd values. With increasing addition rates of biochar, DBP retention by the biochar enhanced. The biochar's effectiveness was remarkably influenced by the physicochemical properties of the soil particle-size fractions, especially, the OM contents and pore size showed the most striking effects. A parameter (rkd) reflecting the biochar's effectiveness showed negative and positive correlations with OM contents and pore size of the soil particle-size fractions, respectively. Accordingly, strong effect of the biochar was found in the soil fractions with low OM contents and high pore size. The findings of this study gave insight into the effects and influencing factors of biochar on sorption and desorption of organic contaminants in soils at scale of various particle-size factions.
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Affiliation(s)
- Lei Xiang
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Li-Juan Zeng
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Pei-Pei Du
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Xiao-Dan Wang
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Xiao-Lian Wu
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, China
| | - Binoy Sarkar
- Department of Animal and Plant Sciences, The University of Sheffield, Sheffield S10 2TN, United Kingdom
| | - Huixiong Lü
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Yan-Wen Li
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Hui Li
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Ce-Hui Mo
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, China; Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Quan-Ying Cai
- Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
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Wei Y, Zhao Y, Zhao X, Gao X, Zheng Y, Zuo H, Wei Z. Roles of different humin and heavy-metal resistant bacteria from composting on heavy metal removal. BIORESOURCE TECHNOLOGY 2020; 296:122375. [PMID: 31734063 DOI: 10.1016/j.biortech.2019.122375] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 10/25/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
This study aims to assess the roles of different humin and heavy-metal resistant bacterial community from composting on heavy metal removal. The results showed that the concentration of Cu2+, Zn2+, Ni2+, Pb2+, Cr3+ and Cd2+ decreased with adding the compost-derived humin, but the removal rates were relatively low (<30% on average). The heavy metal resistant bacteria from composting have better metal binding capacities than humin, and the combined addition of humin and bacteria could further stimulate the biosorption of heavy metals with 60-80% removal of metals and improve the diversity and biomass of bacterial community. There was obviously increased synergy between the humin from maturity phase and bacteria for metal biosorption ("1 + 1 > 2"). Structural equation modeling showed that microbial biomass and humin humification are the key factors for the biosorption of heavy metals. Combining humin from maturity phase with heavy-metal resistant bacteria was suggested to control heavy metal pollution in composts.
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Affiliation(s)
- Yuquan Wei
- College of Life Science, Northeast Agricultural University, Harbin 150030, China; College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China; School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China
| | - Yue Zhao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Xinyu Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xintong Gao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yansi Zheng
- College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China
| | - Huiduan Zuo
- College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China
| | - Zimin Wei
- College of Life Science, Northeast Agricultural University, Harbin 150030, China.
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43
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Xu D, Hu S, Zhang D, Xiong Y, Yang Y, Ran Y. Importance of Sporopollenin Structure and Accessibility in the Sorption of Phenanthrene by Biota Spores and Pollens. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:14285-14295. [PMID: 31578063 DOI: 10.1021/acs.est.9b03911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Although spores/pollens are so abundant and ubiquitous in the environment, the role of these natural organic matter concerning fate and transport of organic pollutants in the environment is neglected. Lipid-free fractions and sporopollenins were isolated from seven spores/pollens collected from lower and higher biota species and were characterized by elemental analysis, CO2 adsorption techniques, and advanced solid-state 13C nuclear magnetic resonance spectroscopy. Then, the sorption isotherms of phenanthrene (Phen) on all the samples were investigated by a batch technique. The sporopollenins were a highly cross-linked polymer including alkyl carbon, poly(methylene) carbon, and aromatic carbon as well as oxygen functionalities; additionally, their sorption capacities (Koc) for Phen reached up to 1 170 000 mL/g, suggesting that some of the sporopollenins were good biopolymeric sorbents for the removal of hydrophobic organic contaminants in aquatic media. A highly significant and positive correlation between the sorption capacity of Phen and the aliphaticity of the sporopollenins suggested that their structure was critical to Phen sorption. Meanwhile, the (O + N)/C atomic ratios and polar groups were significantly and negatively correlated with the sorption capacity of Phen, indicating that accessibility also played a significant role in the sorption process. Moreover, variable correlations between the sorption capacities (Koc) and the micropore volumes of the spore/pollen fractions were observed. This study sheds light on the importance of the polarity, microporosity, and structure of sporopollenins in the sorption process of Phen.
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Affiliation(s)
- Decheng Xu
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou 510640 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Shujie Hu
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou 510640 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Dainan Zhang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou 510640 , China
| | - Yongqiang Xiong
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou 510640 , China
| | - Yu Yang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou 510640 , China
| | - Yong Ran
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou 510640 , China
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Correlations and nonlinear partition of nonionic organic compounds by humus-like substances humificated from rice straw. Sci Rep 2019; 9:15131. [PMID: 31641156 PMCID: PMC6805877 DOI: 10.1038/s41598-019-51406-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/19/2019] [Indexed: 12/14/2022] Open
Abstract
The debate on whether the nonlinear sorption of nonionic organic compounds (NOCs) by soil organic matter (SOM) is captured by nonlinear partition or adsorption has been going on for decades because the used SOM samples are complex mixtures from various precursors with varied humification degrees in natural environment. Therefore, in this study, hydrothermal method was employed to prepare humus-like substances from a sole precursor (i.e., rice straw) with various humification degrees for nonlinear sorption of 25 aromatic compounds, then to have an insight into the underlying mechanisms of the nonlinear sorption of NOCs by SOM. It was observed that the increasing humification degree of humus-like substances, i.e., decreasing in the polarity ((O + N)/C) and increasing in the aromaticity, result in the increase of isotherm nonlinearity and sorption capacity/affinity of NOCs. Sorption capacity of NOCs, obtained by isotherm fitting using Dubinin-Astakhov (DA) model and Dual-Mode (DM) model, are positively correlated with their solubility in water and octanol, indicating the nonlinear sorption could be captured by nonlinear partition mechanism. Specific interactions including hydrogen-bonding interaction and π-π interaction between aromatic structures of humus-like substances and organic molecules could be responsible for the nonlinear partition and the increase of sorption affinity with the enhancement of humification degree. These obtained correlations are valuable for understanding the underlying mechanisms of nonlinear sorption and elucidating the transport of NOCs in the environment.
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Xiao X, Xi BD, He XS, Zhang H, Li YH, Pu S, Liu SJ, Yu MD, Yang C. Redox properties and dechlorination capacities of landfill-derived humic-like acids. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 253:488-496. [PMID: 31330341 DOI: 10.1016/j.envpol.2019.07.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 06/20/2019] [Accepted: 07/09/2019] [Indexed: 05/26/2023]
Abstract
Electron transfer capacities (ETC) of humic-like acids (HLA) and their effects on dechlorination are dependent on their redox-active properties. Aging and minerals can affect the chemical compositions and structures of HLA. However, the underlying mechanism and the impacts on the dechlorination capacities of HLA are poorly understood. We investigated how redox properties change in association with the intrinsic chemical natures and exterior minerals of the HLA extracted from landfilled solid wastes. Furthermore, the ETC of the landfill-derived HLA could be strengthened by increasing landfill age and demineralization, thereby facilitating the dechlorination of pentachlorophenol (PCP). The HLA molecules started to polymerize aromatic macromolecules during landfilling, leading to an increase in ETC and dechlorination capacities. Macromolecular HLA were dissociated to smaller molecules and exposed more aromatic and carboxyl groups when separated from minerals, which enhanced the ETC and the dechlorination abilities of the HLA. Microbial-mediated dechlorination was an effective way to degrade PCP, and almost 80% of the PCP was transformed after 40 days of demineralized HLA and Shewanella oneidensis MR-1 incubation. The demineralization and aging further facilitated the microbial-mediated PCP dechlorination. The findings provide a scientific base for improving in-situ bioremediation of chlorinated compound-contaminated soils using freshly synthesized HLA.
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Affiliation(s)
- Xiao Xiao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Bei-Dou Xi
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, China
| | - Xiao-Song He
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Hui Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Yan-Hong Li
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, China
| | - Shengyan Pu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Si-Jia Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, China
| | - Min-Da Yu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Chao Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
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Wang L, Hua X, Zhang L, Song N, Dong D, Guo Z. Influence of organic carbon fractions of freshwater biofilms on the sorption for phenanthrene and ofloxacin: The important role of aliphatic carbons. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 685:818-826. [PMID: 31238285 DOI: 10.1016/j.scitotenv.2019.06.203] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 06/13/2019] [Accepted: 06/13/2019] [Indexed: 06/09/2023]
Abstract
Sorption to biofilms is thought to be a crucial process controlling the fate of trace organic contaminants in aquatic systems. The organic composition of biofilms is regarded as the determining factor in the sorption mechanism of biofilm organic carbon fractions; however, its role is not well known. Here, the sorption of phenanthrene and ofloxacin was modeled with classic and emerging organic contaminants, respectively, by comparatively investigating nine type of freshwater biofilms cultured in a river, lake, and reservoir in spring, summer, and autumn. The chemical features of the nine biofilms were analyzed using elemental analysis, infrared spectroscopy, X-ray photoelectron spectroscopy, and carbon-13 nuclear magnetic resonance. Results showed that the freshwater biofilms were aliphatic-rich natural amorphous solid substances with O-containing functional groups, and their surface polarity was significantly lower than their bulk polarity. All the isotherms of phenanthrene and ofloxacin sorption by the biofilms were linear. The organic carbon-normalized partition coefficient values for phenanthrene and ofloxacin on the nine biofilms ranged from 91.9 to 364.2 L g-1 and 3.2 to 43.2 L g-1, respectively. The van der Waals interaction between a majority of aliphatic carbon (73.4%-83.9%) in biofilms and the two sorbates was much stronger than π-π interactions between a minority of aromatic carbon (12.7%-21.7%) and sorbates. The surface polarity of the biofilms regulated polar interactions including the hydrogen bonding and electron donor-acceptor interactions. Both the aliphatic carbon and surface polarity in the biofilms enhanced the sorption of phenanthrene and ofloxacin. The sorption characteristics and mechanisms of polycyclic aromatic hydrocarbons and antibiotics on biofilms shown in our present and previous studies are different from those of other ubiquitous natural solid materials such as soils and sediments. This study provides insight into the importance of aliphatic carbon fractions of freshwater biofilms for the sorption of classic and emerging organic contaminants.
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Affiliation(s)
- Liting Wang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Xiuyi Hua
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Liwen Zhang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Na Song
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Deming Dong
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Zhiyong Guo
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, College of New Energy and Environment, Jilin University, Changchun 130012, China.
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Chu G, Zhao J, Liu Y, Lang D, Wu M, Pan B, Steinberg CEW. The relative importance of different carbon structures in biochars to carbamazepine and bisphenol A sorption. JOURNAL OF HAZARDOUS MATERIALS 2019; 373:106-114. [PMID: 30909135 DOI: 10.1016/j.jhazmat.2019.03.078] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 03/17/2019] [Accepted: 03/18/2019] [Indexed: 05/27/2023]
Abstract
Biochar, a carbon-rich material, has attracted immense attention owing to its applications in soil remediation. However, the mechanisms by which heterogeneous carbon structures of biochars immobilize organic contaminants are not yet fully understood. In this study, the noncondensed aromatic components in biochars were selectively removed through bleaching. Different techniques, such as 13C nuclear magnetic resonance, were applied to characterize the biochar compositions, and thus the role of the different carbon structures in organic contaminant sorption was discussed. The aromatic carbon structures in biochars were gradually developed and evolved from noncondensed to condensed structure with increasing pyrolytic temperatures from 300 to 700 °C. Based on elemental analysis, the carbon removed by bleaching decreased from 43.9% to 5.92% with increasing temperatures. After the surface area normalization of the apparent sorption, bleaching increased the sorption of carbamazepine and bisphenol A on biochars produced at 500 °C, but not for those produced at 300 and 700 °C. Bleaching removed noncondensed aromatics and enriched condensed aromatics, which resulted in increased sorption. However, bleaching also resulted in the blockage of micropores in biochars with abundant condensed aromatics, causing decreased sorption. The apparent sorption was determined by the balancing of these two opposite effects.
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Affiliation(s)
- Gang Chu
- Faculty of Environment Science & Engineering, Kunming University of Science & Technology, Kunming, Yunnan, 650500, China; Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China; Faculty of Resources and Environment, Anhui Agricultural University, Hefei, 230036, Anhui, China
| | - Jing Zhao
- Faculty of Environment Science & Engineering, Kunming University of Science & Technology, Kunming, Yunnan, 650500, China; Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China
| | - Yang Liu
- Faculty of Environment Science & Engineering, Kunming University of Science & Technology, Kunming, Yunnan, 650500, China; Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China
| | - Di Lang
- Faculty of Environment Science & Engineering, Kunming University of Science & Technology, Kunming, Yunnan, 650500, China; Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China
| | - Min Wu
- Faculty of Environment Science & Engineering, Kunming University of Science & Technology, Kunming, Yunnan, 650500, China; Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China
| | - Bo Pan
- Faculty of Environment Science & Engineering, Kunming University of Science & Technology, Kunming, Yunnan, 650500, China; Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China.
| | - Christian E W Steinberg
- Faculty of Life Sciences, Institute of Biology, Freshwater & Stress Ecology, Humboldt-University at Berlin, Arboretum, Späthstr. 80/81, 12437, Berlin, Germany
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Hu S, Zhang D, Yang Y, Ran Y, Mao J, Chu W, Cao X. Effects of the Chemical Structure, Surface, and Micropore Properties of Activated and Oxidized Black Carbon on the Sorption and Desorption of Phenanthrene. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:7683-7693. [PMID: 31244067 DOI: 10.1021/acs.est.9b01788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The effects of the chemical structure, surface properties, and micropore of modified black carbon samples (BCs) on the sorption mechanism of hydrophobic organic contaminants (HOCs) are discussed. Activated and oxidized BCs were produced from a shale kerogen at 250-500 °C by chemical activation regents (KOH and ZnCl2) and then by oxidative regents (H2O2 and NaClO). The surface properties (water contact angel, Boehm titration, and cation exchange capacity, CEC), structural properties (advanced solid-state 13C NMR), micropore properties (CO2 adsorption), mesopore properties (N2 adsorption), and sorption and desorption properties of phenanthrene were obtained. The results showed that ZnCl2-activated BCs had higher basic surface groups, CEC values, aromatic carbon contents, micropore volumes, and adsorption volumes but exhibited lower acidic surface groups than the KOH-activated BCs did. Micropore modeling and sorption irreversibility indicated that the micropore filling was the main sorption mechanism of phenanthrene. In addition, ZnCl2 activated and NaClO oxidized BCs showed a nice regression equation between adsorption volumes and micropore volumes (CO2- V0) as follows: Q0' = 0.495 V0 + 6.28( R2 = 0.98, p < 0.001). Moreover, the contents of nonprotonated aromatic carbon, micropore volumes, and micropore sizes are the critical factors to micropore filling mechanism of phenanthrene on BCs. The size of fused aromatic rings was estimated from the recoupled 1H-13C dipolar dephasing, and the BC structural models at temperatures ranging from 300 to 500 were proposed. This finding improves our understanding of the sorption mechanism of HOCs from the perspectives of chemical structure and micropore properties.
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Affiliation(s)
- Shujie Hu
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou 510640 , China
- University of Chinese Academy of Science , Beijing 100049 , China
| | - Dainan Zhang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou 510640 , China
| | - Yu Yang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou 510640 , China
| | - Yong Ran
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry , Chinese Academy of Sciences , Guangzhou 510640 , China
| | - Jingdong Mao
- Department of Chemistry and Biochemistry , Old Dominion University , Norfolk , Virginia 23529 , United States
| | - Wenying Chu
- Department of Chemistry and Biochemistry , Old Dominion University , Norfolk , Virginia 23529 , United States
| | - Xiaoyan Cao
- Department of Chemistry , Brandeis University , Waltham , Massachusetts 02453 , United States
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Tang Z, Li Y, Yang Z, Liu D, Tang M, Yang S, Tang Y. Characteristic and mechanism of sorption and desorption of benzene on humic acid. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:20277-20285. [PMID: 31098910 DOI: 10.1007/s11356-019-05095-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 04/04/2019] [Indexed: 06/09/2023]
Abstract
The sorption/desorption behaviors of benzene, toluene, ethylbenzene, and xylene (BTEX) on soil organic matter (SOM) have a significant influence on their fate and bioavailability in soil. Humic acid (HA) is a major fraction of SOM. And due to its various structural properties and chemical composition, the sorption/desorption characteristics and mechanisms of HA are diverse for organic contaminants. In this study, batch experiments were conducted to investigate the sorption/desorption behavior of benzene on HA at different conditions (temperature, pH, and ionic strength). The particle size of HA increased at lower initial pH which promoted sorption capacity for benzene, illustrating that HA with larger particle size may develop preferential chemical conformation for benzene sorption at lower pH. Sorption isotherms indicated that the sorption of benzene on HA is an exothermic and spontaneous physical process. And kinetic studies showed that the sorption of benzene on HA is controlled by the diffusion process and the availability of sorption sites. Meanwhile, weak sorbent-sorbate interaction is presented in the desorption experiment. There was no obvious effect of ionic strength on benzene sorption, suggesting that the sorption process is not controlled by ion-exchange or electrostatic interaction. Combined with FTIR analysis, the hydrophobic partitioning and π-π conjugative interaction are the possible sorption mechanisms of benzene on HA.
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Affiliation(s)
- Zhi Tang
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China
| | - Yilian Li
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China.
| | - Zhe Yang
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China
| | - Danqing Liu
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China
| | - Min Tang
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China
| | - Sen Yang
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China
| | - Ye Tang
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China
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Liu Y, Guo L, Huang H, Dou J, Huang Q, Gan D, Chen J, Li Y, Zhang X, Wei Y. Facile preparation of magnetic composites based on carbon nanotubes: Utilization for removal of environmental pollutants. J Colloid Interface Sci 2019; 545:8-15. [DOI: 10.1016/j.jcis.2019.03.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 02/28/2019] [Accepted: 03/04/2019] [Indexed: 10/27/2022]
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