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Barron A, Jamieson J, Colombani N, Bostick BC, Ortega-Tong P, Sbarbati C, Barbieri M, Petitta M, Prommer H. Model-Based Analysis of Arsenic Retention by Stimulated Iron Mineral Transformation under Coastal Aquifer Conditions. ACS ES&T WATER 2024; 4:2944-2956. [PMID: 39005241 PMCID: PMC11242918 DOI: 10.1021/acsestwater.4c00134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
A multitude of geochemical processes control the aqueous concentration and transport properties of trace metal contaminants such as arsenic (As) in groundwater environments. Effective As remediation, especially under reducing conditions, has remained a significant challenge. Fe(II) nitrate treatments are a promising option for As immobilization but require optimization to be most effective. Here, we develop a process-based numerical modeling framework to provide an in-depth understanding of the geochemical mechanisms controlling the response of As-contaminated sediments to Fe(II) nitrate treatment. The analyzed data sets included time series from two batch experiments (control vs treatment) and effluent concentrations from a flow-through column experiment. The reaction network incorporates a mixture of homogeneous and heterogeneous reactions affecting Fe redox chemistry. Modeling revealed that the precipitation of the Fe treatment caused a rapid pH decline, which then triggered multiple heterogeneous buffering processes. The model quantifies key processes for effective remediation, including the transfer of aqueous As to adsorbed As and the transformation of Fe minerals, which act as sorption hosts, from amorphous to more stable phases. The developed model provides the basis for predictions of the remedial benefits of Fe(II) nitrate treatments under varying geochemical and hydrogeological conditions, particularly in high-As coastal environments.
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Affiliation(s)
- Alyssa Barron
- School of Earth Sciences, University of Western Australia, Crawley 6009 WA, Australia
| | | | | | - Benjamin C Bostick
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, United States
| | - Pablo Ortega-Tong
- School of Earth Sciences, University of Western Australia, Crawley 6009 WA, Australia; Intera Inc., Perth 6000 WA, Australia
| | - Chiara Sbarbati
- Dept. of Ecological and Biological Sciences, University of Tuscia, Viterbo 01100, Italy
| | - Maurizio Barbieri
- Dept. of Earth Sciences, "Sapienza" University of Roma, Roma 00185, Italy
| | - Marco Petitta
- Dept. of Earth Sciences, "Sapienza" University of Roma, Roma 00185, Italy
| | - Henning Prommer
- School of Earth Sciences, University of Western Australia, Crawley 6009 WA, Australia; Ekion Pty Ltd., Swanbourne 6010 WA, Australia
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Hei E, He M, Zhang E, Yu H, Chen K, Qin Y, Zeng X, Zhou Z, Fan H, Shangguan Y, Wang L. Risk assessment of antimony-arsenic contaminated soil remediated using zero-valent iron at different pH values combined with freeze-thaw cycles. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:448. [PMID: 38607467 DOI: 10.1007/s10661-024-12601-6] [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: 10/24/2023] [Accepted: 04/04/2024] [Indexed: 04/13/2024]
Abstract
Soil in mining wastelands is seriously polluted with heavy metals. Zero-valent iron (ZVI) is widely used for remediation of heavy metal-polluted soil because of its excellent adsorption properties; however, the remediation process is affected by complex environmental conditions, such as acid rain and freeze-thaw cycles. In this study, the effects of different pH values and freeze-thaw cycles on remediation of antimony (Sb)- and arsenic (As)-contaminated soil by ZVI were investigated in laboratory simulation experiments. The stability and potential human health risks associated with the remediated soil were evaluated. The results showed that ZVI has a significant stabilizing effect on Sb and As in both acidic and alkaline soils contaminated with dual levels of Sb and As, and the freeze-thaw process in different pH value solution systems further enhances the ability of ZVI to stabilize Sb and As, especially in acidic soils. However, it should be noted that apart from the pH=1.0 solution environment, ZVI's ability to stabilize As is attenuated under other circumstances, potentially leading to leaching of its unstable form and thereby increasing contamination risks. This indicates that the F1 (2% ZVI+pH=1 solution+freeze-thaw cycle) processing exhibits superior effectiveness. After F1 treatment, the bioavailability of Sb and As in both soils also significantly decreased during the gastric and intestinal stages (about 60.00%), the non-carcinogenic and carcinogenic risks of Sb and As in alkaline soils are eliminated for children and adults, with a decrease ranging from 60.00% to 70.00%, while in acidic soil, the non-carcinogenic and carcinogenic risks of As to adults and children is acceptable, but Sb still poses non-carcinogenic risks to children, despite reductions of about 65.00%. These findings demonstrate that soil pH is a crucial factor influencing the efficacy of ZVI in stabilizing Sb and As contaminants during freeze-thaw cycles. This provides a solid theoretical foundation for utilizing ZVI in the remediation of Sb- and As-contaminated soils, emphasizing the significance of considering both pH levels and freeze-thaw conditions to ensure effective and safe treatment.
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Affiliation(s)
- Erping Hei
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China
- College of Agronomy, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Mingjiang He
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China
| | - Enze Zhang
- College of Environment, Nanjing University, Nanjing, 210008, Jiangsu, China
| | - Hua Yu
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China
| | - Kun Chen
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China
| | - Yusheng Qin
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China
| | - Xiangzhong Zeng
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China
| | - Zijun Zhou
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China
| | - Hongzhu Fan
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China
| | - Yuxian Shangguan
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China.
| | - Luying Wang
- Chengdu Jiaji Agricultural Technology Co., Ltd., Chengdu, 610095, Sichuan, China
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Meng Y, Li S, Zhang Z. Inhibition performance of uniconazole on steel corrosion in simulated concrete pore solution: An eco-friendly way for steel protection. Heliyon 2024; 10:e24688. [PMID: 38318003 PMCID: PMC10838733 DOI: 10.1016/j.heliyon.2024.e24688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 12/04/2023] [Accepted: 01/12/2024] [Indexed: 02/07/2024] Open
Abstract
Corrosion inhibitors play a vital role in impeding the corrosion process of steel bars within concrete structures exposed to corrosive environments. Nevertheless, conventional corrosion inhibitors pose environmental risks. In contrast, contemporary studies have explored corrosion inhibitors that are eco-friendly. However, these inhibitors are burdened by high costs and complex production processes, impeding the widespread application in concrete structures. Consequently, this study presents an innovative solution by incorporating uniconazole, an agricultural fungicide, as a corrosion inhibitor for steel bars in concrete structures. The steel bars were exposed to corrosion within a simulated concrete pore solution containing 0.6 mol/L NaCl, both with and without the presence of uniconazole. The morphology and hydrophilicity of the steel bar surface were investigated via optical microscope and contact angle experiments. Electrochemical tests (open circuit potential, potentiodynamic polarization, electrochemical impedance spectroscopy, and Mott-Schottky analysis) and X-ray photoelectron spectroscopy were employed to investigate the corrosion inhibition performance and mechanism of uniconazole. The results demonstrate that uniconazole elevates the hydrophobicity and contributes to the corrosion inhibition of steel bars. Electrochemical test results indicate that as the concentration of uniconazole increases from 1 × 10-4 mol/L to 1 × 10-3 mol/L, the inhibition efficiency likewise demonstrates a corresponding increase, escalating from around 50 %-90 %. Uniconazole molecules function as mixed-type inhibitors, exhibiting characteristics of both anode-type and cathode-type inhibitors. The adsorption of uniconazole enhances the stability and thickness of the passive-adsorbed layer on the steel surface, effectively impeding the charge transfer process and obstructing the interaction of corrosive substances with the base metal. In summary, the application of uniconazole exhibits the highlights of efficient, cost-effective, environmentally friendly, and the potential for scalable production. This positions uniconazole as a promising candidate for use as a corrosion inhibitor in the domain of concrete structures.
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Affiliation(s)
- Yuanyuan Meng
- College of Civil Engineering & Transportation, South China University of Technology, Guangzhou, Guangdong 510640, China
- College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi, 830052, China
| | - Shuangxi Li
- College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi, 830052, China
| | - Zhi Zhang
- Guangzhou Expressway Co, Ltd., Guangzhou, Guangdong 510000, China
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Li Q, He Y, Yang A, Hu X, Liu F, Mu J, Mei S, Yang LP. Antimony(III) removal by biogenic manganese oxides formed by Pseudomonas aeruginosa PA-1: kinetics and mechanisms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:97102-97114. [PMID: 37584806 DOI: 10.1007/s11356-023-29277-z] [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: 05/11/2023] [Accepted: 08/07/2023] [Indexed: 08/17/2023]
Abstract
In this study, Pseudomonas aeruginosa PA-1, a manganese-oxidizing bacterium screened from the soil at a manganese mining area, was found to be tolerated to Sb(III) stress during the Mn(II) oxidation, and the generated biological manganese oxide (BMO) outperformed the identical type of Abiotic-MnOX in terms of oxidation and adsorption of Sb(III). Adsorption kinetics and isotherm experiments indicated that Sb(III) was primarily adsorbed through chemisorption and multilayer adsorption on BMO; the maximum adsorption capacity of BMO was 143.15 mg·g-1. Removal kinetic studies showed that the Sb(III) removal efficiency by BMO was 72.38-95.71% after 15 min, and it could be up to 96.32-98.31% after 480 min. The removal procedure could be divided into two stages, fast (within 15 min) and slow (15 ~ 480 min), both of which exhibited first-order kinetic behavior. Dynamic fitting in two steps revealed that the removal speed correlated to the level of dissolved Sb(III) with low Sb(III) concentrations, but with the initial concentration being high, the removal speed rate was independent of dissolved Sb(III). During the whole process, the Sb(III) removal speed by BMO was also higher than that by the Abiotic-MnOX. Combining multiple spectroscopic techniques revealed that Sb(V) was generated through the Sb(III) oxidation by BMO and replacing surface metal hydroxyl groups to form the complex internal Mn-O(H)-Sb(V) or generating stable Mn(II)-antimonate precipitates on the surface. In addition, microbial metabolites, including tryptophan and humus, in BMO may be complex with Sb(III) and Sb(V) to achieve the treatment of Sb(III). This research investigates the factors and mechanisms influencing the adsorption and removal of Sb(III) by BMO, which could aid in its future engineering applications for the BMO.
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Affiliation(s)
- Qing Li
- The College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
- Guizhou Guida Yuanheng Environmental Protection Technology Co., Ltd., Guiyang, 550025, People's Republic of China
| | - Yun He
- The College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Aijiang Yang
- The College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, People's Republic of China.
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, People's Republic of China.
| | - Xia Hu
- The College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, People's Republic of China
| | - Fang Liu
- The College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Jincheng Mu
- The College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Shixue Mei
- The College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Lin-Ping Yang
- The College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, People's Republic of China
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Yang C, Hao Y, Wang H. Antimony and naphthalene can be simultaneously leached from a combined contaminated soil using carboxymethyl-β-cyclodextrin as a biodegradable eluant. RSC Adv 2023; 13:12742-12749. [PMID: 37114031 PMCID: PMC10126743 DOI: 10.1039/d3ra00581j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
In this study, we have investigated the removal efficiency of antimony (Sb) and naphthalene (Nap) from a combined contaminated soil by carboxymethyl-β-cyclodextrin (CMCD) leaching and reveal its remediation mechanisms by FTIR and 1H NMR analyses. The results show that the highest removal efficiencies of Sb and Nap were 94.82% and 93.59%, respectively, with a CMCD concentration of 15 g L-1 at a pH of 4 and a leaching rate of 2.00 mL min-1 over an interval-time of 12 h. The breakthrough curves show that CMCD had a stronger inclusion capacity of Nap than Sb, and Sb could enhance the adsorption capacity of Nap, while Nap weakened the adsorption of Sb during CMCD leaching. Furthermore, the FTIR analysis suggests that the removal of Sb from combined contaminated soil involved complexation with the carboxyl and hydroxyl groups on CMCD, and the NMR analysis suggests that the inclusion of Nap occurred. These results indicate that CMCD is a good eluant for remediating soil contaminated by a combination of heavy metals and polycyclic aromatic hydrocarbons (PAHs), and its remediation mechanisms depend on the complexation reactions between the surface functional groups and inclusion reactions in the internal cavities.
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Affiliation(s)
- Changming Yang
- Key Laboratory of Yangtze River Water Environment of the Ministry of Education, Tongji University Shanghai 200092 China +86-21-65986313 +86-21-65983869
- College of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 China
| | - Yanzhang Hao
- Key Laboratory of Yangtze River Water Environment of the Ministry of Education, Tongji University Shanghai 200092 China +86-21-65986313 +86-21-65983869
| | - Hanyu Wang
- Key Laboratory of Yangtze River Water Environment of the Ministry of Education, Tongji University Shanghai 200092 China +86-21-65986313 +86-21-65983869
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Hao C, Sun X, Peng Y, Xie B, He K, Wang Y, Liu M, Fan X. Geochemical impact of dissolved organic matter on antimony mobilization in shallow groundwater of the Xikuangshan antimony mine, Hunan Province, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 860:160292. [PMID: 36414049 DOI: 10.1016/j.scitotenv.2022.160292] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 10/27/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
Dissolved organic matter (DOM) is widely used in aquatic systems to control the environmental fate of As. However, similar to the behavior of As, Sb mobilization driven by DOM is poorly understood. A total of 25 samples were collected from shallow groundwater in the Xikuangshan mine to compare the spectroscopic characteristics and chemical properties of DOM between high- and low-Sb groundwater and to determine the roles of DOM in Sb mobility. The concentrations of Sb and DOM varied from 0.003 to 18.402 mg/L (mean: 3.407 mg/L) and 0.38 to 9.90 mg/L (mean: 2.49 mg/L), respectively. The DOM of the D3x4 water was primarily dominated by terrestrial and microbial humic-like and fulvic acid substances, with a relatively small contribution of tryptophan-like components. Complexing agents, competitive adsorption, and photopromoted oxidation under sunlight were considered as the formation mechanisms for DOM-controlled Sb(V)-dominated Sb species in D3x4 water. The weakly alkaline and oxidizing conditions, and the presence of Fe hydroxides facilitated the promotion of Sb(V) concentration. The findings of this study further enhance our understanding of the Sb migration mechanism in oxic groundwater.
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Affiliation(s)
- Chunming Hao
- North China Institute of Science and Technology, Hebei 065201, PR China; Key Laboratory of Mine Water Resource Utilization of Anhui Higher Education Institutes, Suzhou University, Anhui 234000, PR China.
| | - Ximeng Sun
- North China Institute of Science and Technology, Hebei 065201, PR China
| | - Yingao Peng
- Institute of Disaster Prevention, Hebei 065201, PR China
| | - Bing Xie
- North China Institute of Science and Technology, Hebei 065201, PR China
| | - Kaikai He
- North China Institute of Science and Technology, Hebei 065201, PR China
| | - Yantang Wang
- North China Institute of Science and Technology, Hebei 065201, PR China
| | - Min Liu
- North China Institute of Science and Technology, Hebei 065201, PR China
| | - Xing Fan
- North China Institute of Science and Technology, Hebei 065201, PR China.
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7
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Long J, Tan D, Zhou Y, Zhou D, Luo Y, Bin D, Wang Z, Wang J, Lei M. The leaching of antimony and arsenic by simulated acid rain in three soil types from the world's largest antimony mine area. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:4253-4268. [PMID: 34982347 DOI: 10.1007/s10653-021-01188-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 12/17/2021] [Indexed: 06/14/2023]
Abstract
A simulated acid rain (SAR) experiment on leaching of antimony (Sb) and arsenic (As) in three soil types including paddy soils (PS), vegetable soils (VS) and slag based soils (SS) from Xikuangshan (XKS) Sb mine area was conducted. The SAR at pH 2.5, 3.5, 4.5 and 5.6 were sprayed to soil columns with intermittent pattern in a period of 50 days. Through the spraying duration, leaching Sb in PS, VS and SS showed decreasing trends regardless of pH values in SAR and were in the ranges of 0.026-0.064 mg L-1, 0.19-2.18 mg L-1 and 11.8-32.4 mg L-1, respectively. By contrast, leaching As in these three soil types continuously increased at the initial five spraying times and then deeply decreased afterward, with ranges being 0-0.007 mg L-1, 0.001-0.071 mg L-1 and 0.17-1.07 mg L-1, respectively. The leaching Sb in all the three soil types were extremely higher than the reference value in grade IV (0.01 mg L-1) for groundwater quality of China (GB/T 14,848-2017). For leaching As, peck values in VS and all the values in SS were also greater than the corresponding reference value (0.05 mg L-1). This indicated that leaching Sb and As could pollute the groundwater in XKS Sb mine area, especially those in slag based soils. The total leaching losses of Sb and As were affected by pH ambiguously, such as SAR at pH 2.5, 5.6 and 2.5 induced the greatest losses of Sb in PS, VS and SS, and pH 3.5, 5.6 and 2.5 resulted in the greatest leaching losses of As in these soils. After SAR treatment, the specific sorbed and Fe/Mn oxide-associated Sb and As significantly decreased. It demonstrated that these two fractions of both Sb and As were involved in leaching losses. The present study also found that the SAR treatment resulted in soil acidification in all the three soil types. In addition, available N, P and K in all the SAR treatments decreased regardless of pH values, except for available N and P in PS.
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Affiliation(s)
- Jiumei Long
- College of Life Sciences and Environment, Hengyang Normal University, Hengyang, 421008, People's Republic of China
- Hunan Key Laboratory for Conservation and Utilization of Biological Resources in the Nanyue Mountainous Region, Hengyang, 421008, People's Republic of China
| | - Di Tan
- Changde Ecological Environment Bureau, Changde, 415000, People's Republic of China
| | - Yimin Zhou
- College of Resource and Environment, Hunan Agricultural University, Changsha, 410128, People's Republic of China
- Hunan Engineering Research Center for Safe and High-Efficient Utilization of Heavy Metal Pollution Farmland, Changsha, 410128, People's Republic of China
| | - Dongsheng Zhou
- College of Life Sciences and Environment, Hengyang Normal University, Hengyang, 421008, People's Republic of China
- Hunan Key Laboratory for Conservation and Utilization of Biological Resources in the Nanyue Mountainous Region, Hengyang, 421008, People's Republic of China
| | - Yuanlai Luo
- College of Life Sciences and Environment, Hengyang Normal University, Hengyang, 421008, People's Republic of China
- Hunan Key Laboratory for Conservation and Utilization of Biological Resources in the Nanyue Mountainous Region, Hengyang, 421008, People's Republic of China
| | - Dongmei Bin
- College of Life Sciences and Environment, Hengyang Normal University, Hengyang, 421008, People's Republic of China
- Hunan Key Laboratory for Conservation and Utilization of Biological Resources in the Nanyue Mountainous Region, Hengyang, 421008, People's Republic of China
| | - Zhixin Wang
- College of Life Sciences and Environment, Hengyang Normal University, Hengyang, 421008, People's Republic of China
- Hunan Key Laboratory for Conservation and Utilization of Biological Resources in the Nanyue Mountainous Region, Hengyang, 421008, People's Republic of China
| | - Jing Wang
- College of Life Sciences and Environment, Hengyang Normal University, Hengyang, 421008, People's Republic of China
- Hunan Key Laboratory for Conservation and Utilization of Biological Resources in the Nanyue Mountainous Region, Hengyang, 421008, People's Republic of China
| | - Ming Lei
- College of Resource and Environment, Hunan Agricultural University, Changsha, 410128, People's Republic of China.
- Hunan Engineering Research Center for Safe and High-Efficient Utilization of Heavy Metal Pollution Farmland, Changsha, 410128, People's Republic of China.
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Ding B, Wang X, Feng K, Fu J, Liang J, Zhou L. Efficient adsorption of Cr(VI) in acidic environment by nano-scaled schwertmannite prepared through pH regulation: characteristics, performances, and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:77344-77358. [PMID: 35675009 DOI: 10.1007/s11356-022-21257-z] [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: 03/04/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
Acidic Cr(VI)-containing wastewater has received increasing attention in recent years. Schwertmannite is a suitable adsorbent for its acid resistance and good adsorption ability. However, it shows poor Cr(VI) adsorption performance under acidic conditions. Herein, inspired by the fast neutralization-mineralization process of acid mine drainage (AMD) triggered by alkaline rocks, a novel nano-scaled schwertmannite (Sch-2.7) with high Cr(VI) adsorption capacity was synthesized at constant pH of 2.7 via adding OH-. Compared with common schwertmannite (Sch), appropriate OH- effectively improved mineral yield (the precipitation efficiency of Fe: 96.75% vs. 29.93%), specific surface area (65.1 m2/g vs. 18.9 m2/g), surface group content, and further Cr(VI) adsorption ability of Sch-2.7. The maximum adsorption capacity was 54.17 (pH = 3), 61.59 (pH = 4), and 66.5 mg/g (pH = 5) for Sch-2.7, whereas only 20.35, 24.51, and 27.17 mg/g for Sch. On average, the former was 2.53 times higher than the latter. Temperature and coexisting ions had little influences on the sorption process of Sch-2.7. The mechanism analysis demonstrated that the Cr(VI) removal by Sch-2.7 was a more thermodynamic favorable process due to abundant reactive-active components on Sch-2.7 for adsorption reaction. This work provided new insight into performance optimization and application potential on Cr(VI) removal of schwertmannite.
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Affiliation(s)
- Baoting Ding
- Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Xiaomeng Wang
- Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Kun Feng
- Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Jingran Fu
- Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Jianru Liang
- Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Lixiang Zhou
- Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
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9
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Zhou S, Du Y, Feng Y, Sun H, Xia W, Yuan H. Stabilization of arsenic and antimony Co-contaminated soil with an iron-based stabilizer: Assessment of strength, leaching and hydraulic properties and immobilization mechanisms. CHEMOSPHERE 2022; 301:134644. [PMID: 35452641 DOI: 10.1016/j.chemosphere.2022.134644] [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: 12/16/2021] [Revised: 04/07/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
Soils with relatively high concentrations of arsenic (As) and antimony (Sb) in mining areas would impose significant risks to human health and ecosystem. A new stabilizer PFSC composed of polymerized ferric sulfate (PFS) and calcium hydroxide (Ca(OH)2) is proposed to stabilize the soil with co-existed As and Sb sampled at an abandoned arsenic factory site. The effects of stabilizer dosage on the properties of the stabilized soil including leached concentrations of As and Sb, unconfined compressive strength (UCS), and hydraulic conductivity (kw) were investigated. The mechanisms of As and Sb immobilization in the soils were interpreted by Tessier's sequential extraction procedure (SEP), scanning electron microscope (SEM), and X-ray diffraction (XRD) results. The results showed increasing PFSC dosage was effective for reducing leached concentrations of As and Sb. When the PFSC dosage increased from 2% to 10%, the UCS and kw increased from 84 to 206 kPa and decreased from 6.48 × 10-8 to 6.33 × 10-9 m s-1, respectively. Tessier's SEP results showed that the leachable As and Sb fractions decreased from 12% to 5.6% and 7.5% to 3.8%, while the Fe-Mn oxides bound fractions increased from 22.3% to 29.4% and 13.2% to 19.5%. The SEM images and XRD patterns of untreated and PFSC stabilized contaminated soils indicated that hematite and calcite (CaCO3) were the main products of PFSC stabilization processes. Adsorption on ferrihydrite, entrapment in hematite lattices, and co-precipitate with calcite might were the main mechanisms of As and Sb immobilization.
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Affiliation(s)
- Shiji Zhou
- Jiangsu Key Laboratory of Urban Underground Engineering & Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing, 210096, China; Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing, 211189, China.
| | - Yanjun Du
- Jiangsu Key Laboratory of Urban Underground Engineering & Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing, 210096, China; Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing, 211189, China.
| | - Yasong Feng
- Jiangsu Key Laboratory of Urban Underground Engineering & Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing, 210096, China; Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing, 211189, China; Jiangsu Province Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, China.
| | - Huiyan Sun
- Jiangsu Key Laboratory of Urban Underground Engineering & Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing, 210096, China; Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing, 211189, China.
| | - Weiyi Xia
- Jiangsu Environmental Engineering Technology Co., Ltd., Jiangsu Environmental Protection Group Co., Ltd., Nanjing, 210019, China.
| | - Hang Yuan
- Jiangsu Key Laboratory of Urban Underground Engineering & Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing, 210096, China; Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety, Institute of Geotechnical Engineering, Southeast University, Nanjing, 211189, China.
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10
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Li X, Xu J, Tian G, Sun Y, Yang Z, Yang Z. Mechanistic insight into cost-effective dedicated oxidation of alkanes by inactivating soil organic matter with FeOOH formed in situ. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 314:115055. [PMID: 35429690 DOI: 10.1016/j.jenvman.2022.115055] [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: 11/09/2021] [Revised: 03/18/2022] [Accepted: 04/07/2022] [Indexed: 06/14/2023]
Abstract
Modified Fenton technique has been widely used to remediate soils contaminated with crude oil but significantly limited to soil organic matter (SOM) consuming oxidants. In this study, soils with developed SOM inactivation by FeOOH formed in situ were created and spiked with crude oil (total petroleum hydrocarbons (TPH): 19453 mg/kg), then treated by modified Fenton reagents. The reaction activity of hydroxyl radicals (•OH) relative to TPH (K) notably increased to 0.65 when the degree of developed inactivation of the SOM (β) was 100% (DIS-100), which was 1.45, 2.03 and 2.83-fold than that of DIS-50, DIS-15 and control (CK), respectively. Meanwhile, the higher the K, the more •OH transferred, which realized the efficient oriented oxidation of TPH. Moreover, improving the transfer of •OH from SOM to TPH was more important than increasing •OH production in soil remediation. With the β increasing to 100%, the ratio of invalid H2O2 decomposition to produce O2 decreased to 22%, equal to 25% reduction compared to CK. Therefore, when β was 100%, the utilization efficiency of H2O2 was improved to 1.48 mg/mmol, which was approximately 1.39, 3.35 and 5.43-fold higher than the efficiency got by DIS-50, DIS-15 and CK, respectively, achieving the cost-effective dedicated oxidation of TPH. In addition, the FeOOH cross-linked with SOM via Fe-O-C and Fe-N bonds to develop inactivation of SOM. In general, this study highlighted a new insight into the effect of developed inactivation of SOM on soil remediation.
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Affiliation(s)
- Xiumin Li
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055, Shaanxi, Xi'an, China; Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, China; Key Laboratory of Environmental Engineering, Shaanxi Province, China
| | - Jinlan Xu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055, Shaanxi, Xi'an, China; Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, China; Key Laboratory of Environmental Engineering, Shaanxi Province, China.
| | - Guiyong Tian
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055, Shaanxi, Xi'an, China; Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, China; Key Laboratory of Environmental Engineering, Shaanxi Province, China
| | - Yanjie Sun
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055, Shaanxi, Xi'an, China; Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, China; Key Laboratory of Environmental Engineering, Shaanxi Province, China
| | - Zhengli Yang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055, Shaanxi, Xi'an, China; Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, China; Key Laboratory of Environmental Engineering, Shaanxi Province, China
| | - Zhilin Yang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, 710055, Shaanxi, Xi'an, China; Key Laboratory of Northwest Water Resources, Environment and Ecology, MOE, China; Key Laboratory of Environmental Engineering, Shaanxi Province, China
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11
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Jiao Y, Wang T, He M, Liu X, Lin C, Ouyang W. Simultaneous stabilization of Sb and As co-contaminated soil by FeMg modified biochar. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 830:154831. [PMID: 35346707 DOI: 10.1016/j.scitotenv.2022.154831] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/08/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
Currently, metalloid co-contamination, such as antimony and arsenic in soil, poses a serious threat to ecological stability and human health. Stabilization, a low-cost, effective, environmentally mild remediation strategy, shows enormous potential for mitigating environmental concerns. In this study, a novel FeMg modified porous biochar with different Fe/Mg proportions was prepared using the co-precipitation method to investigate the stabilizing efficiency in aqueous solutions and real soils. The optimal removal performance for Sb(V) and As(V) was the 1/3 mol ratio of Fe/Mg (3FMKBC), in which the maximum adsorption capacities of Sb(V) and As(V) were 296.9 and 195.4 mg/g, respectively. Detailed morphological and BET analyses suggested that BC effectively reduced Fe and Mg oxide agglomeration and endowed more interfacial active sites. Meanwhile, detailed adsorption behavior and surface analysis of 3FMKBC indicated that electrostatic interactions, hydrogen bonds, surface hydroxyl complexation, and ligand exchange induced by ≡C-O-Fe/Mg-OH dominated the stabilization process. Moreover, according to a 40-day incubation study in soil, 3FMKBC (1 wt. ml) decreased the available Sb (28.5% and 23.0%) and As (83.1% and 31.1%) extracted by toxicity characteristic leaching procedure (TCLP) and 0.1 M Na2HPO4, respectively. The above results indicated that 3FMKBC was an optimal amendment for limiting the migration and bioavailability of Sb and As. In addition, the sequential extraction and soil properties confirmed that 3FMKBC could realize the redistribution of resolved Sb and As between the soil solution and solid particles effectively, thereby converting the bioavailable/labile fraction of Sb and As to a more stabilized fraction. All results demonstrated that 3FMKBC could be a prospective material for Sb and As co-contamination stabilization.
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Affiliation(s)
- Yonghong Jiao
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Tianning Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Mengchang He
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China.
| | - Xitao Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Chunye Lin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Wei Ouyang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
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12
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Wang T, Jiao Y, He M, Ouyang W, Lin C, Liu X, Xie H. Deep insight into the Sb(III) and Sb(V) removal mechanism by Fe-Cu-chitosan material. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 303:119160. [PMID: 35304178 DOI: 10.1016/j.envpol.2022.119160] [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: 01/25/2022] [Revised: 03/08/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
Currently, alleviating antimony (Sb) contamination in aqueous solutions is crucial for restoring and recovering ecological and environmental health. Due to its toxicity, bioaccumulation and mobile characteristics, developing an efficient technique for antimony decontamination is imperative. Herein, we prepared a Fe-Cu-chitosan (FCC) composite by a one-step coprecipitation method, in which nanoscale Fe/Cu acts as the active sites and the whole structure is exhibited as porous microscale particles. A Fe/Cu proportion of 2/1 (FCC-2/1) was determined to be the optimum proportion for antimony adsorption, specifically 34.5 mg g-1 for Sb(III) and 26.8 mg g-1 for Sb(V) (initial concentration: 5.0 mg L-1). Spectral characterization, batch experiments and density functional theory (DFT) simulations were applied to determine the adsorption mechanism, in which surface hydroxyls (-OH) were responsible for antimony complexion and Fe-Cu coupling was a major contributor to adsorption enhancement. According to kinetic analysis, Cu provided an electrostatic attraction during the adsorption process, which facilitated the transportation of antimony molecules to the material interface. In the meantime, the FCC electronic structure was modified due to the optimization of the Fe-Cu interface coupling. Based on the Mullikan net charge, the intrinsic Fe-O-Cu bond might favor interfacial electronic redistribution. When the antimony molecule contacted the adsorption interface, the electrons transferred swiftly as Fe/Cu 3d and O 2p orbital hybridization occurred, thus inducing a stabilizing effect. This work may offer a new perspective for binary oxide construction and its adsorption mechanism analysis.
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Affiliation(s)
- Tianning Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing, 100875, China
| | - Yonghong Jiao
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing, 100875, China
| | - Mengchang He
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing, 100875, China
| | - Wei Ouyang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing, 100875, China
| | - Chunye Lin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing, 100875, China
| | - Xitao Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing, 100875, China
| | - Haijiao Xie
- Hangzhou Yanqu Information Technology Co., Ltd., No. 712 Wen'er West Road, Xihu District, Hangzhou, 310003, China
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13
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Rong Q, Nong X, Zhang C, Zhong K, Zhao H. Immobilization mechanism of antimony by applying zirconium-manganese oxide in soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 823:153435. [PMID: 35092780 DOI: 10.1016/j.scitotenv.2022.153435] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 01/21/2022] [Accepted: 01/22/2022] [Indexed: 06/14/2023]
Abstract
Antimony (Sb) accumulation in soil poses great potential risk to ecological environment, and its mobilization, transformation and bioavailability are controlled by its fractions and species. Hence, it is important to develop functional materials with both adsorption and oxidation that achieve detoxification and control the mobilization of Sb. In this study, the synthesized zirconium‑manganese oxide (ZrMn) could extremely promoted the transformation of antimonite [Sb(III)] to antimonate [Sb(V)], induced the bioavailable Sb shift to well-crystallized (hydr)oxides of Mn and residual fractions, and further reduced mobility and bioavailability Sb in soil. The sorption of ZrMn to Sb(III) and antimonate Sb(V) were affected by interfering ions, and to Sb(III) was a heterogeneous adsorption process. Spectroscopic characterization of XPS and FTIR suggested exchange between the hydroxyl groups and Sb was crucial in its retain and forming an electronegative inner-sphere mononuclear or binuclear bridging compound. The oxidation induced the transformation of Mn species in ZrMn, generated Mn(II) and Mn(III) exposing more reactive sites conducive to oxidation and adsorption, thus Mn oxides has a higher adsorption capacity for Sb(III). However, the Zr oxides of ZrMn presented adsorption rather than oxidation. The application of ZrMn could realize the dual effect of Sb oxidation detoxification and adsorption immobilization in soil, which provided references for Sb contaminated soil remediation.
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Affiliation(s)
- Qun Rong
- College of Life Science and Technology Guangxi University, Nanning, PR China
| | - Xinyu Nong
- School of Resources, Environment and Materials Guangxi University, Nanning, PR China; Guangxi Bossco Environmental Protection Technology Co. Ltd, Nanning, PR China
| | - Chaolan Zhang
- School of Resources, Environment and Materials Guangxi University, Nanning, PR China.
| | - Kai Zhong
- School of Resources, Environment and Materials Guangxi University, Nanning, PR China
| | - Hecheng Zhao
- School of Resources, Environment and Materials Guangxi University, Nanning, PR China
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14
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Zhou M, Li X, Liu X, Mi Y, Fu Z, Zhang R, Su H, Wei Y, Liu H, Wang F. Effects of Antimony on Rice Growth and Its Existing Forms in Rice Under Arbuscular Mycorrhizal Fungi Environment. Front Microbiol 2022; 13:814323. [PMID: 35391723 PMCID: PMC8981305 DOI: 10.3389/fmicb.2022.814323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 02/07/2022] [Indexed: 11/13/2022] Open
Abstract
Arbuscular mycorrhizal fungi (AMF) can form symbiotic relationships with most terrestrial plants and regulate the uptake and distribution of antimony (Sb) in rice. The effect of AMF on the uptake and transport of Sb in rice was observed using pot experiments in the greenhouse. The results showed that AMF inoculation increased the contact area between roots and metals by forming mycelium, and changed the pH and Eh of the root soil, leading to more Sb entering various parts of the rice, especially at an Sb concentration of 1,200 mg/kg. The increase in metal toxicity further led to a decrease in the rice chlorophyll content, which directly resulted in a 22.7% decrease in aboveground biomass, 21.7% in underground biomass, and 11.3% in grain biomass. In addition, the antioxidant enzyme results showed that inoculation of AMF decreased 22.3% in superoxide dismutase, 9.9% in catalase, and 20.7% in peroxidase compared to the non-inoculation groups, further verifying the negative synergistic effect of AMF inoculation on the uptake of Sb in rice. The present study demonstrated the effect of AMF on the uptake and transport of Sb in the soil–rice system, facilitating future research on the related mechanism in the soil–rice system under Sb stress.
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Affiliation(s)
- Min Zhou
- College of Environment, Hohai University, Nanjing, China
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Xinru Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Xuesong Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Yidong Mi
- College of Environment, Hohai University, Nanjing, China
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Zhiyou Fu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Ruiqing Zhang
- School of Ecology and Environment, Inner Mongolla University, Hohhot, China
| | - Hailei Su
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Yuan Wei
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
- *Correspondence: Yuan Wei,
| | - Huifang Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
| | - Fanfan Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
- Fanfan Wang,
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15
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Jia X, Ma L, Liu J, Liu P, Yu L, Zhou J, Li W, Zhou W, Dong Z. Reduction of antimony mobility from Sb-rich smelting slag by Shewanella oneidensis: Integrated biosorption and precipitation. JOURNAL OF HAZARDOUS MATERIALS 2022; 426:127385. [PMID: 34929592 DOI: 10.1016/j.jhazmat.2021.127385] [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: 07/08/2021] [Revised: 09/14/2021] [Accepted: 09/27/2021] [Indexed: 06/14/2023]
Abstract
The dissimilatory Fe(III)-reducing bacteria play a significant role in the mobility of antimony (Sb) under reducing environment. Sb-rich smelting slag is iron (Fe)-containing antimonic mine waste, which is one of the main sources of antimony pollution. In this study, the soluble antimony reacted with Fe(III) by S. oneidensis (Shewanella oneidensis strain MR-1) was performed in reduction condition, then the dissolution behavior of the Sb-rich smelting slag with S. oneidensis was investigated. The results showed that the released Sb was immobilized by S. oneidensis and the strain adsorbed Sb(III) preferentially. Sb(V) can be reduced by S. oneidensis without aqueous Fe. In the presence of Fe(III), S. oneidensis mediated Sb bio-adsorption and the chemical redox of Sb-Fe occurred simultaneously. Sb was co-precipitated with Fe to form the Sb(V)-O-Fe(III) secondary mineral, which was identified as the bidentate mononuclear edge-sharing structure by extended X-ray absorption fine structure (EXAFS) analysis. These results suggest that S. oneidensis has a positive effect on the immobilization and minimizing toxicity of antimony in anoxic soil and groundwater, which provides a theoretical basis for the treatment of antimony contamination.
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Affiliation(s)
- Xiaocen Jia
- School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Liyuan Ma
- School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Jing Liu
- College of Resources and Environment, Southwest University, Chongqing 400715, China
| | - Peng Liu
- School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Lu Yu
- Qiaokou Branch of Wuhan Ecological Environment Bureau, Wuhan 430000, China
| | - Jianwei Zhou
- School of Environmental Studies, China University of Geosciences, Wuhan 430078, China; Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, Wuhan 430000, China.
| | - Wanyu Li
- School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Weiqing Zhou
- School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Zichao Dong
- School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
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16
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Li J, Shi C, Zeng W, Wang Y, Hong Z, Ma Y, Fang L. Distinct roles of pH and organic ligands in the dissolution of goethite by cysteine. J Environ Sci (China) 2022; 113:260-268. [PMID: 34963535 DOI: 10.1016/j.jes.2021.06.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 06/07/2021] [Accepted: 06/10/2021] [Indexed: 06/14/2023]
Abstract
Electron shuttles such cysteine play an important role in Fe cycle and its availability in soils, while the roles of pH and organic ligands in this process are poorly understood. Herein, the reductive dissolution process of goethite by cysteine were explored in the presence of organic ligands. Our results showed that cysteine exhibited a strong reactivity towards goethite - a typical iron minerals in paddy soils with a rate constant ranging from 0.01 to 0.1 hr-1. However, a large portion of Fe(II) appeared to be "structural species" retained on the surface. The decline of pH was favorable to generate more Fe(II) ions and enhancing tendency of Fe(II) release to solution. The decline of generation of Fe(II) by increasing pH was likely to be caused by a lower redox potential and the nature of cysteine pH-dependent adsorption towards goethite. Interestingly, the co-existence of oxalate and citrate ligands also enhanced the rate constant of Fe(II) release from 0.09 to 0.15 hr-1; nevertheless, they negligibly affected the overall generation of Fe(II) in opposition to the pH effect. Further spectroscopic evidence demonstrated that two molecules of cysteine could form disulfide bonds (S-S) to generate cystine through oxidative dehydration, and subsequently, inducing electron transfer from cysteine to the structural Fe(III) on goethite; meanwhile, those organic ligands act as Fe(II) "strippers". The findings of this work provide new insights into the understanding of the different roles of pH and organic ligands on the generation and release of Fe induced by electron shuttles in soils.
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Affiliation(s)
- Ji Li
- Faculty of Material Sciences and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Chenlu Shi
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China
| | - Wenbin Zeng
- Faculty of Material Sciences and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Yaru Wang
- Faculty of Material Sciences and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Zebin Hong
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China
| | - Yibing Ma
- Macao Environmental Research Institute, Macau University of Science and Technology, Taipa 999078, Machao, China
| | - Liping Fang
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China.
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17
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Wang T, Jiao Y, He M, Ouyang W, Lin C, Liu X. Facile co-removal of As(V) and Sb(V) from aqueous solution using Fe-Cu binary oxides: Structural modification and self-driven force field of copper oxides. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 803:150084. [PMID: 34500274 DOI: 10.1016/j.scitotenv.2021.150084] [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: 06/04/2021] [Revised: 08/09/2021] [Accepted: 08/29/2021] [Indexed: 05/27/2023]
Abstract
Currently, the environmental and ecological damage caused by As(V) and Sb(V) co-contamination has attracted widespread attention worldwide. Due to the similar intrinsic structure configuration and electrostatic repulsion of As(V) and Sb(V), the long-standing issue of their low co-removal capacity remains unresolved. In this study, novel Fe-Cu (FC) binary materials with varied Fe/Cu proportions were synthesized via a simple co-precipitation method to co-eliminate aquatic As(V) and Sb(V). A 2/1 ratio of Fe/Cu was determined to be a suitable proportion with a higher co-adsorption capacity, specifically 70.9 mg·g-1 for As(V) and 94.3 mg·g-1 for Sb(V). Detailed morphological and structural analyses indicated that the FC material gradually changed from microscale aggregates to nanoscale spheres with increasing Cu content, accompanied by an increasing crystalline degree and higher surface area. Additionally, the transformation of amorphous ferrihydrite (FO) into FeO(OH) was suppressed by Fe-Cu complexion during the co-adsorption process, in which ferrihydrite (FO) had more adsorption sites than FeO(OH). In addition, the addition of Cu promoted the pHpzc of FC materials from the acidic range into the neutral or alkaline range. The increased potential difference of FC materials accelerated the As(V) and Sb(V) diffusion rate and effectively offset native electrostatic repulsion, which exhibited a considerable effect than the adsorption sites. Through detailed kinetic data analysis, it was determined that the proportion of the diffusion layer thickness around Sb(V) was suppressed to the As(V) level, and the adsorption kinetics of the two species were both promoted by the self-driven force field. All the results indicated that the co-adsorption capacity depended on the coupling contribution of Fe and Cu, where Fe oxide acted as the major adsorption potential and Cu provided a self-driven force for As(V) and Sb(V) diffusion. This study may provide a novel prospective for homogeneous metal ion co-removal.
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Affiliation(s)
- Tianning Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Yonghong Jiao
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Mengchang He
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China.
| | - Wei Ouyang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Chunye Lin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Xitao Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
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18
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Ye C, Ariya PA, Fu F, Yu G, Tang B. Influence of Al(III) and Sb(V) on the transformation of ferrihydrite nanoparticles: Interaction among ferrihydrite, coprecipitated Al(III) and Sb(V). JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124423. [PMID: 33162243 DOI: 10.1016/j.jhazmat.2020.124423] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/15/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
Ferrihydrite is ubiquitous in natural environments and is usually co-precipitated with impure ions and toxic contaminants like Al(III) and Sb(V) during the neutralization process of acid mine drainage. However, little is known about the dynamic interactions among ferrihydrite, Al(III) and Sb(V). In this study, the influence of coprecipitated Al(III) and Sb(V) on the transformation of ferrihydrite was investigated. The samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and transmission electron microscopy before and after aging for 10 days at 70 °C. Results indicated that the Al(III) enhanced the immobilization of Sb(V) under neutral and alkaline conditions, and the presence of Sb(V) induced more production of extractable Al(III). XRD patterns revealed that the transformation rate of coprecipitated Al(III) and Sb(V) ferrihydrite was higher than Al-coprecipitated ferrihydrite. It is speculated that the presence of Sb(V) weakened the inhibition of Al(III) under experimental conditions. Competitive reaction of Al(III) and Sb(V) for substitution on the lattice Fe of ferrihydrite, likely decreased Al(III) substitution on ferrihydrite, and thus increased the observed transformation rate of ferrihydrite. These results have significant environmental implications for predicting the role of impurities and contaminants on ferrihydrite transformation processes.
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Affiliation(s)
- Chujia Ye
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Parisa A Ariya
- Department of Atmospheric & Oceanic Sciences, McGill University, Montreal, PQ H3A 0B9, Canada; Department of Chemistry, McGill University, Montreal, PQ H3A 0B8, Canada
| | - Fenglian Fu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Guangda Yu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Bing Tang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
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19
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Liu C, Li Y, Wang X, Li B, Zhou Y, Liu D, Liu D, Liu S. Efficient extraction of antimony(III) by titanate nanosheets: Study on adsorption behavior and mechanism. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 207:111271. [PMID: 32920314 DOI: 10.1016/j.ecoenv.2020.111271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 08/25/2020] [Accepted: 08/30/2020] [Indexed: 06/11/2023]
Abstract
Antimony has been listed as a critical pollutant in many countries because of its toxic effects on earth organisms. In this study, titanate nanosheets (TNS) were prepared with a high specific surface area by alkaline hydrothermal method. The adsorption mechanism and adsorption capacity of removing Sb(III) from aqueous solutions with TNS as an adsorbent were investigated for the first time. The FTIR and XPS analysis indicated that the interlayer sodium ions of TNS were responsible for Sb(III) adsorption. The batch experiments were conducted on solution pH, adsorbent dosage, initial concentration and reaction time. The results exhibited that when pH was 2, the removal rate was about 90% with the dosage of TNS was 0.1 g/L. The adsorption reaction was exceedingly rapid in the initial 5 min, and then the reaction was in equilibrium after about 30 min. The experimental data were better fitted with Langmuir isotherm model, and the maximum adsorption amount could attain 232.56 mg/g. The experiments showed that TNS had outstanding anti-interference performance to common cations. Therefore, TNS were considered to be an excellent material for removing Sb(III) from aqueous solutions.
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Affiliation(s)
- Cong Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China
| | - Ye Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China.
| | - Xiaoli Wang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China
| | - Bolin Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China
| | - Yuzhi Zhou
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China
| | - Dongbin Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China
| | - Dongxue Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China
| | - Shuang Liu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China
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Zhang C, He M, Ouyang W, Lin C, Liu X. Influence of Fe(II) on Sb(III) oxidation and adsorption by MnO 2 under acidic conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 724:138209. [PMID: 32247116 DOI: 10.1016/j.scitotenv.2020.138209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 03/21/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
The transformation and transport of Sb are significantly influenced by strong oxides (e.g. MnO2) in the natural environment. Furthermore, Fe(II) can coexist with Sb(III) and MnO2 in waters contaminated by acidic mine drainage. However, role of Fe(II) in Sb(III) oxidation and adsorption by MnO2 remains unclear. Therefore, in the present study, the effects of Fe(II) on the oxidation and adsorption of Sb(III) by MnO2 under acidic conditions (pH 3) and the mechanism thereof were comprehensively investigated. The results of kinetic experiments showed that, in the presence of soluble Fe(II), Sb(III) oxidation is inhibited, but adsorption is promoted. Further characterization confirmed that Fe(III) compounds are formed around MnO2 particles and that these inhibit Sb(III) oxidation. However, two different Fe(III) compounds are formed around MnO2 particles depending on how the Fe(II) is introduced into the experimental system. In the simultaneous oxidation system, poorly crystallized or amorphous FeSb precipitates are formed (probably FeSbO4) around MnO2 particles, while in the Fe(II) pretreated oxidation system, schwertmannite is formed. Thus, the present study revealed that Fe(II) is critical to Sb(III) oxidation and adsorption by MnO2 and that the mechanism of its action is depend upon how it is introduced into the reaction system. This information is of relevance to predicting the fate of Sb.
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Affiliation(s)
- Chengjun Zhang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Mengchang He
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China.
| | - Wei Ouyang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Chunye Lin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
| | - Xitao Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
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Jia X, Zhou J, Liu J, Liu P, Yu L, Wen B, Feng Y. The antimony sorption and transport mechanisms in removal experiment by Mn-coated biochar. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 724:138158. [PMID: 32247137 DOI: 10.1016/j.scitotenv.2020.138158] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/22/2020] [Accepted: 03/22/2020] [Indexed: 06/11/2023]
Abstract
A method of Mn-coated biochar production was developed, which showed great removal ability of trivalent antimony (Sb(III)) (0.94 mg g-1) and pentavalent antimony (Sb(V)) (0.73 mg g-1), and the adsorption capacity was stable under different pH. According to the adsorption kinetics and isotherm, the adsorption process of both Sb(III) and Sb(V) was chemisorption, which was both monolayer and poly layers heterogeneous chemisorption process. X-ray photoelectron spectroscopy (XPS) and attenuated total reflectance Fourier-transform infrared (ATR-FTIR) spectroscopy analyses indicated that the main oxides and functional groups involved in the adsorption were manganese oxides (MnOx), carboxyl and hydroxyl groups and Sb(V) was combined with Mn-coated biochar by inner-sphere complexation. Sb(III) was oxidized by oxygen and MnOx which was both on the surface of biochar and dissolved in solution. Furthermore, X-ray absorption near-edge structure (XANES) showed that Sb(V) was the main species after Sb(III) and Sb(V) adsorbed on the Mn-coated biochar. Extended X-ray absorption fine structure (EXAFS) analysis indicated that Sb(III) and MnOx formed the monodentate mononuclear and corner-sharing complexes with a structure of Mn-O-Sb on Mn-coated biochar. While Sb(V) and MnOx formed inner-sphere complexes including edge-sharing and corner-sharing complexes. The new synthetic material can contribute to develop new remediation strategies for treating Sb-contaminated water.
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Affiliation(s)
- Xiaocen Jia
- School of Environmental Studies, China University of Geosciences (Wuhan), 68 Jincheng Road, Wuhan 430078, PR China
| | - Jianwei Zhou
- School of Environmental Studies, China University of Geosciences (Wuhan), 68 Jincheng Road, Wuhan 430078, PR China.
| | - Jing Liu
- College of Resources and Environment, Southwest University, 2 Tiansheng Road, Chongqing 400715, PR China
| | - Peng Liu
- School of Environmental Studies, China University of Geosciences (Wuhan), 68 Jincheng Road, Wuhan 430078, PR China
| | - Lu Yu
- School of Environmental Studies, China University of Geosciences (Wuhan), 68 Jincheng Road, Wuhan 430078, PR China
| | - Bing Wen
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Jiangwangmiao Road, Nanjing 210042, PR China
| | - Yu Feng
- School of Environmental Studies, China University of Geosciences (Wuhan), 68 Jincheng Road, Wuhan 430078, PR China
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22
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Han YS, Park JH. Effect of redox variation on the geochemical behavior of Sb in a vegetated Sb(V)-contaminated soil column. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122112. [PMID: 32311915 DOI: 10.1016/j.jhazmat.2020.122112] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/27/2019] [Accepted: 01/13/2020] [Indexed: 06/11/2023]
Abstract
This study examined the geochemical behavior of antimony (Sb) in a vegetated contaminated soil column consisting of unsaturated rhizosphere and a waterlogging layer. The results showed a reducing condition (Oxidation-Reduction Potential (ORP) of -171 mV) was formed in about 5 days in the waterlogging zone. The amount of Sb released was higher under the oxidizing unsaturated-rhizosphere compared to that in the waterlogging zone possibly because of the weaker affinity of Sb(V) to Mn- and/or Fe-oxides in soil. The fraction of Sb(III) in the dissolved total Sb increased with time when soil redox states were subjected to a further reduction. Solid phase Sb K-edge X-ray absorption spectroscopy (XAS) of soils showed that Sb(III) fraction of the deeper layer soil increased while the unsaturated upper soil solely composed Sb(V). In this study, 250 mg/kg of Sb pollution did not significantly affect plant growth and no significant transport of Sb occurred from the soil to plant. However, changes in redox conditions within the soil column induced a shift in soil microbial communities. Consequently, the importance of redox states of soil on geochemical behavior of Sb and the effects of soil flooding or waterlogging deserve attention in the management of Sb-contaminated soil.
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Affiliation(s)
- Young-Soo Han
- Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, 34132, Republic of Korea
| | - Jin Hee Park
- Department of Environmental & Biological Chemistry, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea.
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23
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Peng C, Izawa T, Zhu L, Kuroda K, Okido M. Tailoring Surface Hydrophilicity Property for Biomedical 316L and 304 Stainless Steels: A Special Perspective on Studying Osteoconductivity and Biocompatibility. ACS APPLIED MATERIALS & INTERFACES 2019; 11:45489-45497. [PMID: 31714730 DOI: 10.1021/acsami.9b17312] [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] [Indexed: 06/10/2023]
Abstract
Stainless steels used as metal implants in the medical field have been attracting intensive attention due to their advantages in mechanical properties, anticorrosion properties, and cost effectiveness. Good osteoconductivity, low toxicity, and low inflammatory reactions are essential to stainless steel implant in vivo. However, there are few cases about the surface modification performed for enhancing the corrosion resistance, and there are few researches on the relationship between the surface properties of stainless steel and osteoconductivity when used as implants. This study employed 316L and 304 stainless steel for surface modification including hydrothermal treatment after acid immersion and anodizing treatment, while the as-polished stainless steel was used as a control group. Anticorrosion properties, protein adsorption properties, osteoconductivity, and anti-inflammation property of these specimens were intensively investigated in vitro and in vivo. It was found that specimen subjected to hydrothermal treatment at 230 °C after immersion in 18 M H2SO4 had the lowest metal ions release, while the anodized specimen had the highest release of Fe and Cr due to corrosion. The protein adsorption amount of the specimens was positively related to the osteoconductivity, suggesting protein adsorption is the prerequisite for good osteoconductivity. The osteoconductivity decreased first and then increased with the increase in water contact angle (WCA) value. The specimen with the surface modified by hydrothermal treatment after acid immersion had the highest protein adsorption amount and the best osteoconductivity due to its superhydrophilicity property. The protein adsorption capacity and osteoconductivity for stainless steel tended to be the same as Ti alloys studied before, indicating the surface hydrophilicity property of the implanted metals was the dominant factor affecting the osteoconductivity. From an anti-inflammation perspective, the specimen with the surface modified by hydrothermal treatment after acid immersion also exhibited the lowest thickness of the fibrous capsule membrane from the in vivo tests, suggesting its advantageous biocompatibility. Thus, this research can provide new insight into the application of austenitic stainless steel for implanted material purposes.
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24
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Fan J, Zhao G, Sun J, Hu Y, Wang T. Effect of humic acid on Se and Fe transformations in soil during waterlogged incubation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 684:476-485. [PMID: 31154220 DOI: 10.1016/j.scitotenv.2019.05.246] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/17/2019] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
Humic acid (HA) serves as electron donor and acceptor in the biogeochemical cycle of Fe and Se in soil. In anoxic condition, a series of redox reactions occur, including reductive dissolution of Fe oxides, decomposition of organic matters, and transformation of trace elements. Thus, this study demonstrates the effect of HA on Se and Fe transformations in soil during waterlogged incubation. Soils were incubated under anoxic condition for 56 days, and pH, redox potential (Eh), and Fe and Se concentrations were measured at specific reaction times (days 2, 4, 8, 15, 28, and 56 of incubation). Moreover, sequential extraction and X-ray photoelectron spectroscopy (XPS) were used to obtain Se and Fe transformations, respectively. High resolution transmission electron microscopy (HR-TEM) was used to observe the morphology properties of soil. Results indicated that 4% HA addition decreased the pH and inhibited Eh decline continuously, and HA addition inhibited the Fe and Se release from soil. The Se concentration in soil solution without and with 4% HA addition at the day 15 of incubation were 1.05 mg L-1 and 0.30 mg L-1, respectively. Moreover, the residual Se fraction in soil with HA addition was evidently more than that in soil without HA addition. XPS of Se3d and Fe2p revealed that the binding energy of the main peak shifted to low values and the peak shape varied with the increase in HA addition. XPS2p3/2 and HR-TEM data indicated that the surface structure of Fe oxides in soil varied with the variations in anoxic incubation time and HA addition amount. HA addition would negatively influence Se and Fe release in soil solution and then reduce their bioavailability. This study aids in understanding the environmental behavior changes of Se and Fe when high HA concentrations enter the soils, especially wetland or paddy soil.
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Affiliation(s)
- Jianxin Fan
- Chongqing Engineering Laboratory of Environmental Hydraulic Engineering, Chongqing Jiaotong University, Chongqing 400074, China; College of Resources and Environment, Southwest University, Chongqing 400715, China.
| | - Guoliang Zhao
- Chongqing Engineering Laboratory of Environmental Hydraulic Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Jiaoxia Sun
- Chongqing Engineering Laboratory of Environmental Hydraulic Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Ying Hu
- Chongqing Engineering Laboratory of Environmental Hydraulic Engineering, Chongqing Jiaotong University, Chongqing 400074, China
| | - Tujin Wang
- Chongqing Engineering Laboratory of Environmental Hydraulic Engineering, Chongqing Jiaotong University, Chongqing 400074, China
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25
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Xiao M, Zhao Y, Li S. Facile synthesis of chrysanthemum-like mesoporous α-FeOOH and its adsorptive behavior of antimony from aqueous solution. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1637263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Min Xiao
- Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining & Technology, Xuzhou, Jiangsu, China
- College of Environment, Shenyang University, Shenyang, China
| | - Yunpeng Zhao
- Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining & Technology, Xuzhou, Jiangsu, China
| | - Shifeng Li
- Liaoning Engineering Research Center for Treatment and Recycling of Industrially Discharged Heavy Metals, Shenyang University of Chemical Technology, Shenyang, China
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26
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Yu Q, Feng L, Chai X, Qiu X, Ouyang H, Deng G. Enhanced surface Fenton degradation of BPA in soil with a high pH. CHEMOSPHERE 2019; 220:335-343. [PMID: 30590299 DOI: 10.1016/j.chemosphere.2018.12.141] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/05/2018] [Accepted: 12/19/2018] [Indexed: 06/09/2023]
Abstract
Although the heterogeneous Fenton process of iron-bearing minerals has been widely studied due to its potential use for the removal of organic pollutants, the transformation mediated by Fe species in soil particles remains poorly understood. Here, we compared the removal of bisphenol A (BPA) from soil using a Fenton system at low and high pH values. At low pH value, the BPA removal rate decreased with increasing pH value; this result was consistent with the amount of soluble Fe(II) and surface-bound Fe(II) observed in the soil systems. In contrast, an increased BPA degradation efficiency was observed at high pH, which is different from the traditional Fenton system. The electron spin resonance analysis verified that the high BPA degradation rate was attributed to enhanced ·OH generation. The binding environments of the Fe species in the soil for different reaction pH values were investigated by using Mössbauer spectroscopy combined with selective chemical extraction. A mixed-valence Fe(II) phase was observed at pH 12.0 and accounted for 12% of the total Fe content. The results indicate that in addition to the well-studied soluble Fe(II) and surface-bound Fe(II), structural Fe(II) located in the newly formed secondary precipitates may play a more important role in the generation of ·OH, especially at high pH values. These findings may provide insights into the utilization of Fe-bearing soil minerals as a renewable source for the degradation of organic pollutants over a wide pH range.
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Affiliation(s)
- Qianqian Yu
- School of Earth Science, China University of Geosciences, Wuhan, 430074, China.
| | - Ling Feng
- School of Earth Science, China University of Geosciences, Wuhan, 430074, China
| | - Xinna Chai
- School of Earth Science, China University of Geosciences, Wuhan, 430074, China
| | - Xinhong Qiu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Hubei 430073, China
| | - Hao Ouyang
- School of Earth Science, China University of Geosciences, Wuhan, 430074, China
| | - Guanyu Deng
- School of Earth Science, China University of Geosciences, Wuhan, 430074, China
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27
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Sun Q, Cui PX, Liu C, Peng SM, Alves ME, Zhou DM, Shi ZQ, Wang YJ. Antimony oxidation and sorption behavior on birnessites with different properties (δ-MnO 2 and triclinic birnessite). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 246:990-998. [PMID: 31159148 DOI: 10.1016/j.envpol.2018.12.027] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 11/20/2018] [Accepted: 12/10/2018] [Indexed: 06/09/2023]
Abstract
Birnessites are abundant naturally occurring minerals with high sorption and oxidation capacity that could therefore play an important role in antimony (Sb) migration and transformation. There are various types of birnessites in the environment. However, little is known about the similarities and differences in Sb oxidation and sorption on birnessites with different properties. In this study, the behavior of Sb oxidation and sorption on two contrasting birnessites (δ-MnO2 and triclinic birnessite (TrBir)) were investigated via batch and kinetic experiments and various spectroscopic techniques. Our results showed that the reaction mechanisms between Sb and the two birnessites were similar. The edge sites of birnessites were responsible for Sb(III) oxidation. Mn(IV) was reduced to Mn(III) and Mn(II), bound with birnessites and released to the solution, respectively. Because of the rapid rate of electron transfer of adsorbed Sb(III) to birnessites, the only Sb species on δ-MnO2 after the oxidation reaction was Sb(V). Sb(V) was adsorbed at the edge sites of birnessites by replacing the OH group of birnessites, forming corner-sharing complexes with birnessites. However, the Sb sorption and oxidation capacities of the two birnessites were significantly different. Poorly-crystallized δ-MnO2 exhibited a much higher oxidation and sorption capacity than well-crystallized TrBir because the former had many more edge sites than the latter. This study reveals the general mechanism of the reaction between Sb and birnessite and indicates that birnessite with a high number of edge sites would exhibit a huge capacity in Sb oxidation and sorption.
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Affiliation(s)
- Qian Sun
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, The Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Pei-Xin Cui
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, The Chinese Academy of Sciences, Nanjing, 210008, China
| | - Cun Liu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, The Chinese Academy of Sciences, Nanjing, 210008, China
| | - Shi-Meng Peng
- School of Environment and Energy, South China University of Technology, Guangzhou, Guangdong, 510,006, China
| | - Marcelo Eduardo Alves
- Department of Exact Sciences 'Luiz de Queiroz' Agricultural College - ESALQ/USP, Piracicaba, SP, 13418-900, Brazil
| | - Dong-Mei Zhou
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, The Chinese Academy of Sciences, Nanjing, 210008, China
| | - Zhen-Qing Shi
- School of Environment and Energy, South China University of Technology, Guangzhou, Guangdong, 510,006, China
| | - Yu-Jun Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, The Chinese Academy of Sciences, Nanjing, 210008, China.
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28
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Kocaoba S. Adsorption of Fe(II) and Fe(III) from aqueous solution by using sepiolite: speciation studies with MINEQL+ computer program. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1579841] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Sevgi Kocaoba
- Faculty of Art & Science, Department of Chemistry, Yildiz Technical University, Istanbul, Turkey
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29
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He M, Wang N, Long X, Zhang C, Ma C, Zhong Q, Wang A, Wang Y, Pervaiz A, Shan J. Antimony speciation in the environment: Recent advances in understanding the biogeochemical processes and ecological effects. J Environ Sci (China) 2019; 75:14-39. [PMID: 30473279 DOI: 10.1016/j.jes.2018.05.023] [Citation(s) in RCA: 192] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 05/24/2018] [Accepted: 05/28/2018] [Indexed: 05/14/2023]
Abstract
Antimony (Sb) is a toxic metalloid, and its pollution has become a global environmental problem as a result of its extensive use and corresponding Sb-mining activities. The toxicity and mobility of Sb strongly depend on its chemical speciation. In this review, we summarize the current knowledge on the biogeochemical processes (including emission, distribution, speciation, redox, metabolism and toxicity) that trigger the mobilization and transformation of Sb from pollution sources to the surrounding environment. Natural phenomena such as weathering, biological activity and volcanic activity, together with anthropogenic inputs, are responsible for the emission of Sb into the environment. Sb emitted in the environment can adsorb and undergo redox reactions on organic or inorganic environmental media, thus changing its existing form and exerting toxic effects on the ecosystem. This review is based on a careful and systematic collection of the latest papers during 2010-2017 and our research results, and it illustrates the fate and ecological effects of Sb in the environment.
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Affiliation(s)
- Mengchang He
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Ningning Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Xiaojing Long
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Chengjun Zhang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Congli Ma
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Qianyun Zhong
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Aihua Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Ying Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Aneesa Pervaiz
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Jun Shan
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
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30
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Shi Z, Peng S, Wang P, Sun Q, Wang Y, Lu G, Dang Z. Modeling coupled kinetics of antimony adsorption/desorption and oxidation on manganese oxides. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2018; 20:1691-1696. [PMID: 30283955 DOI: 10.1039/c8em00323h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Understanding the kinetic reactions of antimony (Sb) at the MnO2-water interface is essential for predicting the dynamic behavior of Sb in soil environments. In this study, we developed a quantitative model for assessing the coupling between Sb(iii) oxidation and Sb(iii)/Sb(v) adsorption/desorption kinetics and the role of each individual reaction process in controlling the overall reaction rates. Based on our modeling results, Sb(iii) oxidation rates were very fast at the early stages of the reactions and may significantly slow down with time, and Sb(iii) and Sb(v) showed different adsorption behavior on δ-MnO2. Our kinetics model is able to account for different adsorption/desorption kinetics of Sb(iii) and Sb(v) and the changes of Sb(iii) oxidation rates during the coupled kinetic processes, which provides a general modeling framework for predicting Sb kinetic behavior at the MnO2-water interface.
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Affiliation(s)
- Zhenqing Shi
- School of Environment and Energy, South China University of Technology, Guangzhou, Guangdong 510006, People's Republic of China.
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31
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Sorption Characteristics and Fraction Distribution Changes of Selenite in Soil. SUSTAINABILITY 2018. [DOI: 10.3390/su10072491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Sorption properties play a key role in the mobility of selenium (Se) and fraction distribution changes, leading to the bioavailability of Se in the soil environment. Thus, the effect of soil physicochemical properties on the sorption of exogenous selenite was investigated to predict the rate and capacity of sorption. Correlation analysis and multiple linear regression were used to observe the relationship between sorption characteristics and soil properties. Sequential extraction was used to observe the fractions of Se at different ages in soil. Results indicated that sorption isotherms followed the Langmuir equation, and the sorption capacity ranged from 50.7 to 567 mg·kg−1 with pseudo-second-order sorption kinetics. The correlation and multiple linear regression analyses showed that sorption parameters were significantly positively correlated with dithionite–citrate–bicarbonate-extracted Fe (FeDCB), dithionite–citrate–bicarbonate-extracted Al (AlDCB), amorphous Fe (FeOX), and soil organic matter (SOM), whereas pH was negatively correlated. Sequential extraction analyses revealed that the fraction distribution of Se in soil varied with the age, and the content of elemental Se increased with prolonged aging. FeDCB, AlDCB, FeOX, pH, and SOM play important roles in selenite sorption onto soils. Selenite sorption onto soil can be reduced to a lower-state Se, such as elemental Se and selenides, during the aging process. This information on the environmental behavior of Se is used to develop agronomic strategies for increasing Se levels in food crops and improving human health.
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Khalid MK, Leiviskä T, Tanskanen J. Properties of vanadium-loaded iron sorbent after alkali regeneration. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 76:2672-2679. [PMID: 29168707 DOI: 10.2166/wst.2017.434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of this research was to investigate the regeneration and reuse of a commercial granular iron sorbent (mainly goethite) when used in vanadium removal. A regeneration rate of 3 M NaOH was the highest (85%) achieved, followed by 2 M NaOH (79%) and 1 M NaOH (68%). The breakthrough curves show that the regenerated material can be reused. The BET (Brunauer-Emmett-Teller) surface area increased by 35-38% and the total pore volume increased by 123-130% as a consequence of NaOH treatment. The results indicated that sodium hydroxide could be used for the regeneration of iron sorbent although the regeneration was incomplete. This may be explained by the fact that vanadium diffusion into pores is a significant sorption mechanism in addition to complex formation with surface functional groups. As a consequence, vanadium desorbability from pores is not as effective as the regeneration of surface sites. X-ray photoelectron spectroscopy analyses confirmed a very low vanadium content on the surface of the NaOH-treated iron sorbent.
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Affiliation(s)
- Muhammad Kamran Khalid
- Chemical Process Engineering, University of Oulu, P.O. Box 4300, Oulu, FIN-90014 Finland E-mail:
| | - Tiina Leiviskä
- Chemical Process Engineering, University of Oulu, P.O. Box 4300, Oulu, FIN-90014 Finland E-mail:
| | - Juha Tanskanen
- Chemical Process Engineering, University of Oulu, P.O. Box 4300, Oulu, FIN-90014 Finland E-mail:
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Pure and Fe-Doped Mesoporous Titania Catalyse the Oxidation of Acid Orange 7 by H2O2 under Different Illumination Conditions: Fe Doping Improves Photocatalytic Activity under Simulated Solar Light. Catalysts 2017. [DOI: 10.3390/catal7070213] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Wang J, Sun Y, Jiang H, Feng J. Removal of caffeine from water by combining dielectric barrier discharge (DBD) plasma with goethite. JOURNAL OF SAUDI CHEMICAL SOCIETY 2017. [DOI: 10.1016/j.jscs.2016.08.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yan L, Song J, Chan T, Jing C. Insights into Antimony Adsorption on {001} TiO 2: XAFS and DFT Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:6335-6341. [PMID: 28513146 DOI: 10.1021/acs.est.7b00807] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Antimony (Sb) contamination poses an emerging environmental risk, whereas its removal remains a contemporary challenge due to the lack of knowledge in its surface chemistry and efficient adsorbent. In this study, self-assembly {001} TiO2 was examined for its effectiveness in Sb removal, and the molecular level surface chemistry was studied with X-ray absorption spectroscopy and density functional theory calculations. The kinetics results show that Sb adsorption followed the pseudo-second order reaction, and the Langmuir adsorption capacity was 200 mg/g for Sb(III) and 156 mg/g for Sb(V). The PZC of TiO2, which was 6.6 prior to the adsorption experiment, shifted to 4.8 and <0 after adsorption of Sb(III) and Sb(V), respectively, indicating the formation of negatively charged inner-sphere complexes. EXAFS results suggest that Sb(III/V) adsorption exhibited a bidentate binuclear surface complex. The orbital hybridizing of complexes was studied by XANES, molecular orbital theory (MO), and density of states (DOS) calculations. The change in orbital energy derived from orbital hybridizing of adsorbed Sb on surfaces is the driving force underlining the Sb surface chemistry. New bonds between Sb and TiO2 surface were formed with matched orbital energies. Integrating the molecular and electronic structures into surface complexation modeling reveals the nature of macroscopic Sb adsorption behaviors.
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Affiliation(s)
- Li Yan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Jiaying Song
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
| | - Tingshan Chan
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan
| | - Chuanyong Jing
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
- University of Chinese Academy of Sciences , Beijing 100049, China
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Hou X, Huang X, Jia F, Ai Z, Zhao J, Zhang L. Hydroxylamine Promoted Goethite Surface Fenton Degradation of Organic Pollutants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:5118-5126. [PMID: 28358480 DOI: 10.1021/acs.est.6b05906] [Citation(s) in RCA: 220] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
In this study, we construct a surface Fenton system with hydroxylamine (NH2OH), goethite (α-FeOOH), and H2O2 (α-FeOOH-HA/H2O2) to degrade various organic pollutants including dyes (methyl orange, methylene blue, and rhodamine B), pesticides (pentachlorophenol, alachlor, and atrazine), and antibiotics (tetracycline, chloramphenicol, and lincomycin) at pH 5.0. In this surface Fenton system, the presence of NH2OH could greatly promote the H2O2 decomposition on the α-FeOOH surface to produce ·OH without releasing any detectable iron ions during the alachlor degradation, which was different from some previously reported heterogeneous Fenton counterparts. Moreover, the ·OH generation rate constant of this surface Fenton system was 102-104 times those of previous heterogeneous Fenton processes. The interaction between α-FeOOH and NH2OH was investigated with using attenuated total reflectance Fourier transform infrared spectroscopy and density functional theory calculations. The effective degradation of organic pollutants in this surface Fenton system was ascribed to the efficient Fe(III)/Fe(II) cycle on the α-FeOOH surface promoted by NH2OH, which was confirmed by X-ray photoelectron spectroscopy analysis. The degradation intermediates and mineralization of alachlor in this surface Fenton system were then systematically investigated using total organic carbon and ion chromatography, liquid chromatography-mass spectrometry, and gas chromatography-mass spectrometry. This study offers a new strategy to degrade organic pollutants and also sheds light on the environmental effects of goethite.
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Affiliation(s)
- Xiaojing Hou
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Xiaopeng Huang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Falong Jia
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Zhihui Ai
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Jincai Zhao
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Lizhi Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, Central China Normal University , Wuhan 430079, P. R. China
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