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Zhang X, Hua J, Zhu Y, Ding X, Zhang Q, Zhang T, Yang D, Qiu F. Birnessite-Type MnO 2 Modified Sustainable Biomass Fiber toward Adsorption Removal Heavy Metal Ion from Actual River Aquatic Environment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8738-8750. [PMID: 38602229 DOI: 10.1021/acs.langmuir.4c00723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
In this work, a novel birnessite-type MnO2 modified corn husk sustainable biomass fiber (MnO2@CHF) adsorbent was fabricated for efficient cadmium (Cd) removal from aquatic environments. MnO2@CHF was designed from KMnO4 hydrothermally treated with corn husk fibers. Various characterization revealed that MnO2@CHF possessed the hierarchical structure nanosheets, large specific surface area, and multiple oxygen-containing functional groups. Batch adsorption experimental results indicated that the highest Cd (II) removal rate could be obtained at the optimal conditions of adsorbent amount of 0.200 g/L, adsorption time of 600 min, pH 6.00, and temperature of 40.0 °C. Adsorption isotherm and kinetics results showed that Cd (II) adsorption behavior on MnO2@CHF was a monolayer adsorption process and dominated by chemisorption and intraparticle diffusion. The optimum adsorption capacity (Langmuir model) of Cd (II) on MnO2@CHF was 23.0 mg/g, which was higher than those of other reported common biomass adsorbent materials. Further investigation indicated that the adsorption of Cd (II) on MnO2@CHF involved mainly ion exchange, surface complexation, redox reaction, and electrostatic attraction. Moreover, the maximum Cd (II) removal rate on MnO2@CHF from natural river samples (Xicheng Canal) could reach 59.2% during the first cycle test. This study showed that MnO2@CHF was an ideal candidate in Cd (II) practical application treatment, providing references for resource utilization of agricultural wastes for heavy metal removal.
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Affiliation(s)
- Xiaoying Zhang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jiayi Hua
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yao Zhu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiaolin Ding
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China
| | - Qingyun Zhang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China
| | - Tao Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Dongya Yang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Fengxian Qiu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
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Zhang W, Ashraf WM, Senadheera SS, Alessi DS, Tack FMG, Ok YS. Machine learning based prediction and experimental validation of arsenite and arsenate sorption on biochars. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166678. [PMID: 37657549 DOI: 10.1016/j.scitotenv.2023.166678] [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: 05/13/2023] [Revised: 08/27/2023] [Accepted: 08/27/2023] [Indexed: 09/03/2023]
Abstract
Arsenic (As) contamination in water is a significant environmental concern with profound implications for human health. Accurate prediction of the adsorption capacity of arsenite [As(III)] and arsenate [As(V)] on biochar is vital for the reclamation and recycling of polluted water resources. However, comprehending the intricate mechanisms that govern arsenic accumulation on biochar remains a formidable challenge. Data from the literature on As adsorption to biochar was compiled and fed into machine learning (ML) based modelling algorithms, including AdaBoost, LGBoost, and XGBoost, in order to build models to predict the adsorption efficiency of As(III) and As(V) to biochar, based on the compositional and structural properties. The XGBoost model showed superior accuracy and performance for prediction of As adsorption efficiency (for As(III): coefficient of determination (R2) = 0.93 and root mean square error (RMSE) = 1.29; for As(V), R2 = 0.99, RMSE = 0.62). The initial concentrations of As(III) and As(V) as well as the dosage of the adsorbent were the most significant factors influencing adsorption, explaining 48 % and 66 % of the variability for As(III) and As(V), respectively. The structural properties and composition of the biochar explained 12 % and 40 %, respectively, of the variability of As(III) adsorption, and 13 % and 21 % of that of As(V). The XGBoost models were validated using experimental data. R2 values were 0.9 and 0.84, and RMSE values 6.5 and 8.90 for As(III) and As(V), respectively. The ML approach can be a valuable tool for improving the treatment of inorganic As in aqueous environments as it can help estimate the optimal adsorption conditions of As in biochar-amended water, and serve as an early warning for As-contaminated water.
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Affiliation(s)
- Wei Zhang
- Korea Biochar Research Center, APRU Sustainable Waste Management & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea; School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Waqar Muhammad Ashraf
- The Sargent Centre for Process Systems Engineering, Department of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
| | - Sachini Supunsala Senadheera
- Korea Biochar Research Center, APRU Sustainable Waste Management & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea; International ESG Association (IESGA), Seoul 06621, Republic of Korea
| | - Daniel S Alessi
- Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada
| | - Filip M G Tack
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Frieda Saeysstraat 1, B-9052 Gent, Belgium
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea; International ESG Association (IESGA), Seoul 06621, Republic of Korea.
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Lataf A, Carleer R, Yperman J, Schreurs S, D'Haen J, Cuypers A, Vandamme D. The screening of various biochars for Cd 2+ removal at relevant soil pH. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 168:376-385. [PMID: 37348380 DOI: 10.1016/j.wasman.2023.06.018] [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: 04/04/2023] [Revised: 06/11/2023] [Accepted: 06/13/2023] [Indexed: 06/24/2023]
Abstract
Fourteen biochars from seven biomass sources were investigated on their long-term Cd2+ removal. The experiments consisted of a ten-day batch Cd2+ adsorption in a pH-buffered solution (pH = 6) to minimise pH effects. Insect frass, spent peat and chicken manure-derived biochars are promising Cd2+ adsorbents. Pyrolysis temperature was crucial for optimising Cd2+ removal by insect frass and spent peat-derived biochars. For these biochars, a pyrolysis temperature of 450 °C was optimal. In contrast, the Cd2+ removal by chicken manure biochars was independent of pyrolysis temperature. The Cd2+ removal by insect-frass and spent peat-derived biochars was associated with chemisorption on surface functionalities, while using chicken manure biochars was more associated with Cd2+ precipitation. The kinetics of Cd2+ removal over the course of ten days showed that insect frass biochar (450 °C) showed a gradual increase from 36 to 75 % Cd2+ removal, while chicken manure and spent peat-derived biochar (450 °C) already showed a higher Cd2+ removal (72 - 89 %) after day 1. This evidences that a long-term Cd2+ removal effect can be expected for some biochars. This should certainly be taken into consideration in future soil-based experiments.
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Affiliation(s)
- A Lataf
- Analytical and Circular Chemistry, IMO, CMK, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium
| | - R Carleer
- Analytical and Circular Chemistry, IMO, CMK, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium
| | - J Yperman
- Analytical and Circular Chemistry, IMO, CMK, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium
| | - S Schreurs
- NuTeC, CMK, Hasselt University, Agoralaan Building H, 3590 Diepenbeek, Belgium
| | - J D'Haen
- Institute for Materials Research and Imec division Imomec (IMO-IMOMEC), Hasselt University, 3590 Diepenbeek, Belgium
| | - A Cuypers
- Environmental Biology, CMK, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium
| | - D Vandamme
- Analytical and Circular Chemistry, IMO, CMK, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium.
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Duwiejuah AB, Quainoo AK, Abubakari AH. Simultaneous adsorption of toxic metals in binary systems using peanut and sheanut shells biochars. Heliyon 2022; 8:e10558. [PMID: 36119887 PMCID: PMC9475329 DOI: 10.1016/j.heliyon.2022.e10558] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/14/2022] [Accepted: 09/01/2022] [Indexed: 11/18/2022] Open
Abstract
Converting peanut and sheanut shells into biochar is a smart strategy for recycling agricultural waste. Biochar was produced from peanut and sheanut shells at temperatures of 350 ± 5 °C and 700 ± 5 °C. The adsorption capacities for lead (Pb2+), cadmium (Cd2+) and mercury (Hg2+) in the binary systems were evaluated. In the binary systems with concentrations of 5 : 5 mg/L, 10 : 10 mg/L, 25 : 25 mg/L and 50 : 50 mg/L the removal efficiencies of GB350, SB350, GS350, GB700, SB700 and GS700 were 100% for Pb2+ and 88.70%–99.46% for Cd2+, 98.20%–100% for Pb2+ and 100% for Hg2+, 79.30%–100% for Cd2+ and 99.96%–100% for Hg2+. The higher adsorption percentages of Pb2+, Cd2+ and Hg2+ by the biochar in the binary systems indicated that the pH values of the solutions were good and suitable for adsorption. The biochar from peanut and sheanut shells showed excellent capacity to remove Pb, Cd and Hg in the binary systems. The Langmuir model (0.3351 ≤ R2 ≤ 0.9901) was more suitable than the Freundlich model (0.0014 ≤ R2 ≤ 0.9994) for the adsorption of toxic metal ions onto the biochar in the binary systems. The interactive effects of the binary mixtures in the aqueous solution of Pb2+, Cd2+, and Hg2+ were found to be either antagonistic or synergistic. Peanut and sheanut shell biochar were rich in calcium, potassium, magnesium, and sodium, and phosphates affected the mechanisms of Pb and Cd adsorption. The high sulphur content might have influenced the mechanism of Hg adsorption in the aqueous solutions on peanut and sheanut shell biochar. These results suggest that peanut and sheanut shell biochar have enormous potential and are suitable for adsorption of Pb2+, Cd2+ and Hg2+ in wastewater and polluted soil. Therefore, their effectiveness should be further tested in an actual water polluted environment.
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Affiliation(s)
- Abudu Ballu Duwiejuah
- Department of Biotechnology, Faculty of Biosciences, University for Development Studies, Tamale, Ghana
| | - Albert Kojo Quainoo
- Department of Biotechnology, Faculty of Biosciences, University for Development Studies, Tamale, Ghana
| | - Abdul-Halim Abubakari
- Department of Horticulture, Faculty of Agriculture, Food and Consumer Sciences, University for Development Studies, Tamale, Ghana
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Zheng L, Tong C, Gao J, Xiao R. Effects of wetland plant biochars on heavy metal immobilization and enzyme activity in soils from the Yellow River estuary. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:40796-40811. [PMID: 35083684 DOI: 10.1007/s11356-021-18116-8] [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: 06/17/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
The purpose of this study was to assess the effects of wetland plant biochars on the enzyme activity in heavy metal contaminated soil. The biochars were produced from Phragmites australis (PB), Suaeda salsa (SB), and Tamarix chinensis (TB) under different pyrolysis temperatures and times. The detected pyrolysis products showed that the ash, pH, electrical conductivity, and carbon content of the biochars increased significantly, while the production rate of the biochars decreased with increasing pyrolysis temperature and time. The results of the adsorption experiments indicated that biochar addition could effectively reduce the concentration of Pb and/or Cd in the Pb2+/Cd2+ single or mixed solutions, but the Pb2+ and Cd2+ in the mixed solution indicated a competitive adsorption. A 30-day incubation experiment was conducted using salt marsh soil amended with different biochar application rates to investigate the short-term effects of biochar addition on Pb and Cd immobilization. The PB and SB significantly immobilized Pb within the first 15 days, but Pb remobilized within the next 15-day period. In contrast, TB addition did not significantly fix Pb. Moreover, biochar addition promoted the conversion of Cd from the residue to the less immobile fractions. The addition of three types of plant biochar had no significant effect on the urease activity in wetland soil but significantly increased soil sucrase activity. PB and SB significantly promoted catalase activity, while TB significantly inhibited soil catalase activity. According to the adsorption effect, the fixation effect, and the promotion of enzyme activities, the Suaeda salsa biochars are suitable for the remediation of heavy metal pollution in wetland soils.
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Affiliation(s)
- Lidi Zheng
- School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Chuan Tong
- School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Jujuan Gao
- Fujian Minjiang River Estuary Wetland National Nature Reserve Administrative Office, Fuzhou, 350200, China
| | - Rong Xiao
- College of Environment and Resources, Fuzhou University, Fuzhou, 350108, China.
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Huang H, Zheng Y, Wei D, Yang G, Peng X, Fan L, Luo L, Zhou Y. Efficient removal of pefloxacin from aqueous solution by acid-alkali modified sludge-based biochar: adsorption kinetics, isotherm, thermodynamics, and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:43201-43211. [PMID: 35091955 DOI: 10.1007/s11356-021-18220-9] [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: 09/05/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
In this paper, one kind of acid-alkali modified sludge-based biochar (ASBC) was synthesized, characterized, and employed as adsorbent for the removal of pefloxacin. The characterization results showed that the specific surface area (SSA) of ASBC (53.381 m2/g) was significantly higher than that of SBC (24.411 m2/g). ASBC had a rougher surface, larger particle distribution, lower zero point charge, and richer functional groups (e.g., C-O and O-H) than SBC. The adsorption capacity of ASBC was 1.82 times than that of SBC. After 8 adsorption cycles in reuse experiment, the adsorption capacity of ASBC for pefloxacin still reached 144.08 mg/L, indicating that ASBC has good reusability. Static experiments showed that the optimal pH value was 6.0 in the adsorption of pefloxacin on SBC and ASBC. The result of adsorption kinetics indicated that the pseudo-second-order model could describe well the adsorption process. The Freundlich model was better than the Langmuir model to describe the adsorption of pefloxacin by ASBC, indicating that the adsorption process was mainly multilayer adsorption. Thermodynamic result showed that the adsorption of pefloxacin by ASBC was spontaneous and endothermic. The removal mechanism of pefloxacin by ASBC is mainly the substitution reaction and π-π EDA interaction. In summary, acid-alkali modified biochar is an effective adsorbent for pefloxacin in aqueous solution, and has great application prospects.
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Affiliation(s)
- Hongli Huang
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Yongxin Zheng
- Yueyang Academy of Agricultural Sciences, Yueyang, 414000, China
| | - Dongning Wei
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Guang Yang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Xin Peng
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Lingjia Fan
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Lin Luo
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Yaoyu Zhou
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China.
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Liu R, Zhang Y, Hu B, Wang H. Improved Pb(II) removal in aqueous solution by sulfide@biochar and polysaccharose-FeS@ biochar composites: Efficiencies and mechanisms. CHEMOSPHERE 2022; 287:132087. [PMID: 34523465 DOI: 10.1016/j.chemosphere.2021.132087] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/18/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
Novel biochars, namely nano iron sulfide@ walnut shell biochar (FeS@WNS), Starch-FeS@WNS and Chitosan-FeS@WNS, were prepared by WNS loaded with nano FeS and starch (or chitosan). Nano FeS can be effectively improved lead ions (Pb(II)) removal and starch (or chitosan) improved the stability of FeS and the defect of easy agglomeration. The materials were characterized by SEM, EDS, FTIR and XRD, and the preparation was successful. The adsorption capacity of Pb(II) reached 63.5, 80.0, 84.7 mg g-1 under 0.5 g L-1 of FeS@WNS, Starch-FeS@WNS and Chitosan-FeS@WNS. The adsorption of Pb(II) on the materials was more consistent with the pseudo-second-order kinetic model (K2 = 0.001-0.005 g (mg·min)-1, R2 = 0.980-0.999) and Langmuir model (R2 = 0.974-1.00), indicating that the adsorption of Pb(II) was mainly monolayer adsorption dominated by chemical adsorption. △G < 0 (-3.7~-6.97) and △H > 0 (1.56-20.49) indicated that the reaction was a spontaneous endothermic process. The mechanisms of Pb(II) removal from aqueous solutions involved electrostatic attraction, hydrogen bonding, physical adsorption, ion exchange and oxidoreduction. Additionally, stability and reusability of FeS@WNS, Starch-FeS@WNS and Chitosan-FeS@WNS was good. The novel sorbents of Starch-FeS@WNS and Chitosan-FeS@WNS can be used in Pb(II) wastewater treatment.
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Affiliation(s)
- Renrong Liu
- School of Life Science, School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, Zhejiang, 312000, PR China
| | - Yaohong Zhang
- School of Life Science, School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, Zhejiang, 312000, PR China
| | - Baowei Hu
- School of Life Science, School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, Zhejiang, 312000, PR China
| | - Hai Wang
- School of Life Science, School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, Zhejiang, 312000, PR China.
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Liu W, Ren D, Wu J, Wang Z, Zhang S, Zhang X, Gong X. Adsorption behavior of 2,4-DCP by rice straw biochar modified with CTAB. ENVIRONMENTAL TECHNOLOGY 2021; 42:3797-3806. [PMID: 32167412 DOI: 10.1080/09593330.2020.1743367] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
In this study, rice straw was used as the raw materials of biomass carbon to prepare biochar at different temperatures (400°C, 500°C, 600°C, 700°C, and 800°C). In addition, cetyl trimethyl ammonium bromide (CTAB) modified biochar was used to treat 2,4-dichlorophenol (2,4-DCP) in water. The influences of adsorbent dosage, solution pH, adsorption time, and initial solubility of the 2,4-DCP solution on the adsorption properties were investigated. The physicochemical properties of biochar were investigated using SEM, FT-IR, BET surface area, and pore size analysis. The results showed that the pyrolysis temperature had a great influence on the biochar structure. CTAB provided hydrophilic and hydrophobic groups to the modified biochar, which had increased adsorption capacity comparing to unmodified biochar. The pH also had a significant effect on the adsorption performance of biochar, and the adsorption performance of biochar decreased significantly under alkaline conditions. The maximum adsorption capacities of modified biochar and unmodified biochar were 59.81 and 20.89 mg/g, respectively, indicating that the adsorption capacity of modified biochar was significantly higher than that of unmodified biochar. The adsorption process of 2,4-DCP by rice straw biochar conformed to the Second-order kinetic model and the Freundlich isotherm adsorption model.
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Affiliation(s)
- Wenting Liu
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, People's Republic of China
| | - Dajun Ren
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, People's Republic of China
| | - Jian Wu
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, People's Republic of China
| | - Zhaobo Wang
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, People's Republic of China
| | - Shuqin Zhang
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, People's Republic of China
| | - Xiaoqin Zhang
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, People's Republic of China
| | - Xiangyi Gong
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, People's Republic of China
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Comprehensive comparisons of iodate adsorption onto corn stalk hydrothermal and pyrolytic biochar. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07874-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Saeed AAH, Harun NY, Sufian S, Bilad MR, Zakaria ZY, Jagaba AH, Ghaleb AAS, Mohammed HG. Pristine and Magnetic Kenaf Fiber Biochar for Cd 2+ Adsorption from Aqueous Solution. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:7949. [PMID: 34360240 PMCID: PMC8345446 DOI: 10.3390/ijerph18157949] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 02/03/2023]
Abstract
Development of strategies for removing heavy metals from aquatic environments is in high demand. Cadmium is one of the most dangerous metals in the environment, even under extremely low quantities. In this study, kenaf and magnetic biochar composite were prepared for the adsorption of Cd2+. The synthesized biochar was characterized using (a vibrating-sample magnetometer VSM), Scanning electron microscopy (SEM), X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The adsorption batch study was carried out to investigate the influence of pH, kinetics, isotherm, and thermodynamics on Cd2+ adsorption. The characterization results demonstrated that the biochar contained iron particles that help in improving the textural properties (i.e., surface area and pore volume), increasing the number of oxygen-containing groups, and forming inner-sphere complexes with oxygen-containing groups. The adsorption study results show that optimum adsorption was achieved under pH 5-6. An increase in initial ion concentration and solution temperature resulted in increased adsorption capacity. Surface modification of biochar using iron oxide for imposing magnetic property allowed for easy separation by external magnet and regeneration. The magnetic biochar composite also showed a higher affinity to Cd2+ than the pristine biochar. The adsorption data fit well with the pseudo-second-order and the Langmuir isotherm, with the maximum adsorption capacity of 47.90 mg/g.
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Affiliation(s)
- Anwar Ameen Hezam Saeed
- Department of Chemical Engineering, University Teknologi PETRONAS, Seri Iskandar 31750, Malaysia; (A.A.H.S.); (S.S.)
- Centre of Urban Resource Sustainability, University Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia
| | - Noorfidza Yub Harun
- Department of Chemical Engineering, University Teknologi PETRONAS, Seri Iskandar 31750, Malaysia; (A.A.H.S.); (S.S.)
- Centre of Urban Resource Sustainability, University Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia
| | - Suriati Sufian
- Department of Chemical Engineering, University Teknologi PETRONAS, Seri Iskandar 31750, Malaysia; (A.A.H.S.); (S.S.)
| | - Muhammad Roil Bilad
- Faculty of Integrated Technologies, University Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei;
| | - Zaki Yamani Zakaria
- School of Chemical & Energy Engineering, University Teknologi Malaysia, Skudai 81310, Malaysia;
| | - Ahmad Hussaini Jagaba
- Department of Civil and Environmental Engineering, University Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia; (A.H.J.); (A.A.S.G.)
| | - Aiban Abdulhakim Saeed Ghaleb
- Department of Civil and Environmental Engineering, University Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia; (A.H.J.); (A.A.S.G.)
| | - Haetham G. Mohammed
- Department of Mechanical Engineering, University Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia;
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Ding J, Chen W, Zhang Z, Qin F, Jiang J, He A, Sheng GD. Enhanced removal of cadmium from wastewater with coupled biochar and Bacillus subtilis. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 83:2075-2086. [PMID: 33989177 DOI: 10.2166/wst.2021.138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Shortcomings of individual biochar or microbial technologies often exist in heavy metal removal from wastewater and may be circumvented by coupled use of biochar and microorganisms. In this study, Bacillus subtilis and each of three biochars of different origins (corn stalk, peanut shell, and pine wood) were coupled forming composite systems to treat a cadmium (Cd, 50 mg/L) wastewater formulated with CdCl2 in batch tests. Biochar in composite system enhanced the activity and Cd adsorption of B. subtilis. Compared with single systems with Cd removal up to 33%, the composite system with corn stalk biochar showed up to 62% Cd removal, which was greater than the sum of respective single B. subtilis and biochar systems. Further analysis showed that the removal of Cd by the corn stalk composite system could be considered to consist of three successive stages, that is, the biochar-dominant adsorption stage, the B. subtilis-dominant adsorption stage, and the final biofilm formation stage. The final stage may have provided the composite system with the ability to achieve prolonged steady removal of Cd. The biochar-microorganism composite system shows a promising application for heavy metal wastewater treatment.
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Affiliation(s)
- Jing Ding
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China E-mail: ; † These authors contributed equally to this work
| | - Weiguang Chen
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China E-mail: ; † These authors contributed equally to this work
| | - Zilan Zhang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China E-mail:
| | - Fan Qin
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China E-mail:
| | - Jing Jiang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China E-mail:
| | - Anfei He
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China E-mail:
| | - G Daniel Sheng
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China E-mail:
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Soria RI, Rolfe SA, Betancourth MP, Thornton SF. The relationship between properties of plant-based biochars and sorption of Cd(II), Pb(II) and Zn(II) in soil model systems. Heliyon 2020; 6:e05388. [PMID: 33241138 PMCID: PMC7672296 DOI: 10.1016/j.heliyon.2020.e05388] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/05/2020] [Accepted: 10/27/2020] [Indexed: 12/29/2022] Open
Abstract
Plant based biochars are proposed as soil amendments to immobilize potentially toxic trace elements (PTEs), such as Cd(II), Pb(II) and Zn(II) and aid in soil restoration. However, the sorption capacity of biochar for these elements can vary widely depending on biochar nature and metal properties. Currently, there is no clear methodology to pre-screen biochars for their suitability as adsorbents for these elements. Therefore, to facilitate biochar selection for application in soil restoration, this study explored the relationships between the physico-chemical properties of five plant-based biochars and their capacity to immobilize Cd(II), Pb(II) and Zn(II). Batch experiments using synthetic soil pore water were used to assess the sorption of these elements. The sorption isotherms described by the Hill model indicated that PTE sorption capacity followed the order Pb(II) > Cd(II) >Zn(II) regardless of biochar type in mono-element systems. Preferential sorption of Pb(II) limited the immobilization of Cd(II) and Zn(II) in multi-element systems. ATR-FTIR and SEM-EDX spectroscopy studies indicated that Cd(II) and Pb(II) sorption was mediated by complexation with carboxylic groups, cation-π interactions and precipitation with phosphates and silicates, while Zn(II) sorption occurred mainly by complexation with phenolic groups and precipitation with phosphates. A high correlation (>0.8) between Electrical Conductivity, Cation Exchange Capacity, pH and sorption capacity was identified for all metals tested, highlighting the electrostatic nature of the sorption mechanisms involved. Biochars derived from herbaceous feedstock were better candidates for remediation of soil polluted with Cd(II), Pb(II) and Zn(II), rather than wood-derived biochar. Overall, this study provides evidence of the direct relationship between specific properties of plant-based biochars (pH and EC) and their suitability as adsorbents for some PTEs in soil systems.
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Affiliation(s)
- Rosa I. Soria
- Civil and Structural Engineering Department, Sheffield University, Sheffield, S102TN, United Kingdom
| | - Stephen A. Rolfe
- Department of Animal and Plant Science, Sheffield University, Sheffield, S102TN, United Kingdom
| | | | - Steven F. Thornton
- Civil and Structural Engineering Department, Sheffield University, Sheffield, S102TN, United Kingdom
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Qin Y, Yin X, Xu X, Yan X, Bi F, Wu W. Specific surface area and electron donating capacity determine biochar's role in methane production during anaerobic digestion. BIORESOURCE TECHNOLOGY 2020; 303:122919. [PMID: 32035388 DOI: 10.1016/j.biortech.2020.122919] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 01/23/2020] [Accepted: 01/27/2020] [Indexed: 05/22/2023]
Abstract
The addition of biochar derived from different materials can have varying effects on anaerobic digestion (AD), depending on its physicochemical properties. Physicochemical properties of biochars, biomethanization performance and microbial communities were examined to evaluate the effectiveness of biochars made from different plant wastes on AD in this study. Results showed that all biochars significantly reduce the lag phases during AD, compared with a control treatment (CK). Woody biochars particularly performed much better than herbal ones. Correlation analysis revealed that specific surface area (SSA) and electron donating capacity (EDC) were the key properties of the plant-feedstock-derived biochar in AD enhancement. Microbial community structure analysis showed that higher SSA and EDC are conducive for the growth of bacteria decomposing glucose, further promoting daily methane production in the early AD stage. The results indicate that it is important to select biochar with higher SSA and EDC to enhance biomethanization in AD systems.
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Affiliation(s)
- Yong Qin
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang, China
| | - Xiaosi Yin
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang, China
| | - Xingkun Xu
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang, China
| | - Xiangrui Yan
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang, China
| | - Feng Bi
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang, China
| | - Weixiang Wu
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety Technology, Zhejiang, China.
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Zhu X, Wang X, Ok YS. The application of machine learning methods for prediction of metal sorption onto biochars. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120727. [PMID: 31202073 DOI: 10.1016/j.jhazmat.2019.06.004] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 05/30/2019] [Accepted: 06/02/2019] [Indexed: 06/09/2023]
Abstract
The adsorption of six heavy metals (lead, cadmium, nickel, arsenic, copper, and zinc) on 44 biochars were modeled using artificial neural network (ANN) and random forest (RF) based on 353 dataset of adsorption experiments from literatures. The regression models were trained and optimized to predict the adsorption capacity according to biochar characteristics, metal sources, environmental conditions (e.g. temperature and pH), and the initial concentration ratio of metals to biochars. The RF model showed better accuracy and predictive performance for adsorption efficiency (R2 = 0.973) than ANN model (R2 = 0.948). The biochar characteristics were most significant for adsorption efficiency, in which the contribution of cation exchange capacity (CEC) and pHH2O of biochars accounted for 66% in the biochar characteristics. However, surface area of the biochars provided only 2% of adsorption efficiency. Meanwhile, the models developed by RF had better generalization ability than ANN model. The accurate predicted ability of developed models could significantly reduce experiment workload such as predicting the removal efficiency of biochars for target metal according to biochar characteristics, so as to select more efficient biochar without increasing experimental times. The relative importance of variables could provide a right direction for better treatments of heavy metals in the real water and wastewater.
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Affiliation(s)
- Xinzhe Zhu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore
| | - Xiaonan Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore.
| | - Yong Sik Ok
- Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
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Ma F, Zhao B, Diao J. Synthesis of magnetic biochar derived from cotton stalks for the removal of Cr(VI) from aqueous solution. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 79:2106-2115. [PMID: 31318348 DOI: 10.2166/wst.2019.208] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A magnetic cotton stalk biochar (MCSBC) was synthesized through chemical co-precipitation, based on cotton stalk biochar (CSBC). The MCSBC and CSBC were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and vibrating sample magnetometry. The characterization analyses showed that the magnetization process endowed the CSBC with excellent magnetic properties with a superparamagnetic magnetization of 27.59 emu/g. Batch adsorption experiment results indicated that the Cr(VI) maximum adsorption capacity of MCSBC was 20.05 mg/g, which was higher than that of CSBC (18.77 mg/g). The adsorption kinetic data were well fitted by the pseudo-second-order model and the adsorption isotherms were well represented by the Sips isotherm model. The thermodynamic studies indicated that the adsorption process was spontaneous and endothermic, and the entropy increased. The potential adsorption mechanism was the electrostatic adsorption of anionic Cr(VI) to the positively charged MCSBC surface, the reduction of Cr(VI) into Cr(III) and the complexation of Cr(III) by oxygen-containing functional groups of MCSBC. The regeneration studies showed that MCSBC kept 80% of its initial Cr(VI) adsorption capacity in the cycle. All the findings suggest that this novel magnetic biochar could be used in the field of Cr(VI)-containing wastewater treatment.
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Affiliation(s)
- Fengfeng Ma
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China E-mail: ; ;
| | - Baowei Zhao
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China E-mail: ; ;
| | - Jingru Diao
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China E-mail: ; ;
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Zhang L, Tong L, Zhu P, Huang P, Tan Z, Qin F, Shi W, Wang M, Nie H, Yan G, Huang H. Adsorption of chlortetracycline onto biochar derived from corn cob and sugarcane bagasse. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 78:1336-1347. [PMID: 30388090 DOI: 10.2166/wst.2018.407] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biochar was prepared from two different types of biological waste materials, corn cob (CC) and sugarcane bagasse (SB). The adsorption capacity of each class of adsorbent was determined by chlortetracycline (CTC) adsorption tests. The adsorption kinetics and isotherms of chlortetracycline onto sugarcane bagasse biochar (SBB) and corn cob biochar (CCB) were studied. Experimental results indicated that pseudo-second-order adsorption kinetics of CTC onto SBB and CCB were more reasonable than pseudo-first-order kinetics, and the adsorption kinetic model of CTC onto SBB was slightly better than that onto CCB. The maximum adsorption capacity of CTC onto SBB was 16.96 mg/g at pH 4, while the highest adsorption efficiency of CTC onto CCB was achieved at pH 5 with a maximum adsorption of 12.39 mg/g. The Freundlich isotherm model was better than the Langmuir model at illustrating the adsorption process of CTC onto SBB and CCB. These results provide a way to understand the value of specific biochars, which can be used as efficient and effective adsorbents for CTC removal from waste-water. Compared with raw pinewood, SBB and CBB were considered as alternative materials to remove antibiotics from aqueous environments.
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Affiliation(s)
- Lin Zhang
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
| | - Lei Tong
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
| | - Pengguang Zhu
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
| | - Peng Huang
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
| | - Zhengyu Tan
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
| | - Fangling Qin
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
| | - Wen Shi
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
| | - Mengyun Wang
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
| | - Han Nie
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
| | - Guicheng Yan
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
| | - Hongtao Huang
- School of Environmental Studies, China University of Geosciences, Lumo road 388#, Hongshan district, Wuhan, Hubei 430074, China E-mail:
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