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Gao B, Han Z, Cheng H, Zhou H, Wang Y, Chen Z. Treating waste with waste: Lignin acting as both an effective bactericide and passivator to prevent acid mine drainage formation at the source. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172162. [PMID: 38569954 DOI: 10.1016/j.scitotenv.2024.172162] [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: 01/03/2024] [Revised: 03/26/2024] [Accepted: 03/31/2024] [Indexed: 04/05/2024]
Abstract
Acid mine drainage (AMD) induced by pyrite oxidation is a notorious and serious environmental problem, but the management of AMD in an economical and environmentally friendly way remains challenging. Here, lignin, a natural polymer and abundant waste, was employed as both a bactericide and passivator to prevent AMD formation. The addition of lignin to a mimic AMD formation system inoculated with Acidithiobacillus ferrooxidans at a lignin-to-pyrite weight ratio of 2.5: 10 reduced the combined abiotic and biotic oxidation of pyrite by 68.4 % (based on released SO42-). Morphological characterization of Acidithiobacillus ferrooxidans revealed that lignin could act on the cell surface and impair the cell integrity, disrupting its normal growth and preventing biotic oxidation of pyrite accordingly. Moreover, lignin can be used alone as a passivator to form a coating on the pyrite surface, reducing abiotic oxidation by 71.7 % (based on released SO42-). Through multiple technique analysis, it was proposed that the functional groups on lignin may coordinate with iron ions on pyrite, promoting its deposition on the surface. In addition, the inherent antioxidant activity of lignin may also be actively involved in the abatement of pyrite oxidation via the reduction of iron. Overall, this study offered a "treating waste with waste" strategy for preventing AMD formation at the source and opened a new avenue for the management of AMD.
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Affiliation(s)
- Binyuan Gao
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, PR China
| | - Zebin Han
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, PR China
| | - Haina Cheng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, PR China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, Hunan, PR China
| | - Hongbo Zhou
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, PR China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, Hunan, PR China
| | - Yuguang Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, PR China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, Hunan, PR China
| | - Zhu Chen
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, PR China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, Hunan, PR China.
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2
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Hong M, Wang J, Yang B, Liu Y, Sun X, Li L, Yu S, Liu S, Kang Y, Wang W, Qiu G. Inhibition of pyrite oxidation through forming biogenic K-jarosite coatings to prevent acid mine drainage production. WATER RESEARCH 2024; 252:121221. [PMID: 38324985 DOI: 10.1016/j.watres.2024.121221] [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: 08/02/2023] [Revised: 12/23/2023] [Accepted: 01/28/2024] [Indexed: 02/09/2024]
Abstract
This study proposes a novel method by forming biogenic K-jarosite coatings on pyrite surfaces driven by Acidithiobacillus ferrooxidans (A. ferrooxidans) to reduce heavy metal release and prevent acid mine drainage (AMD) production. Different thicknesses of K-jarosite coatings (0.7 to 1.1 μm) were able to form on pyrite surfaces in the presence of A. ferrooxidans, which positively correlated with the initial addition of Fe2+ and K+ concentrations. The inhibiting effect of K-jarosite coatings on pyrite oxidation was studied by electrochemical measurements, chemical oxidation tests, and bio-oxidation tests. The experimental results showed that the best passivation performance was achieved when 20 mM Fe2+ and 6.7 mM K+ were initially introduced with a bacterial concentration of 4 × 108 cells·mL-1, reducing chemical and biological oxidation by 70 % and 98 %, respectively (based on the concentration of total iron dissolved into the solution by pyrite oxidation). Similarly, bio-oxidation tests of two mine waste samples also showed sound inhibition effects, which offers a preliminary demonstration of the potential applicability of this method to actual waste rock. This study presents a new perspective on passivating the oxidation of metal sulfide tailings or waste and preventing AMD.
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Affiliation(s)
- Maoxin Hong
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China
| | - Jun Wang
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China.
| | - Baojun Yang
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China.
| | - Yang Liu
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China
| | - Xin Sun
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China
| | - Laishun Li
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China
| | - Shichao Yu
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China
| | - Shitong Liu
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China
| | - Yang Kang
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China
| | - Wei Wang
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China
| | - Guanzhou Qiu
- School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Central South University, Changsha 410083, China
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3
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Zheng Z, Wang X, Zhang W, Wang L, Lyu H, Tang J. Regulation of ARGs abundance by biofilm colonization on microplastics under selective pressure of antibiotics in river water environment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 355:120402. [PMID: 38428183 DOI: 10.1016/j.jenvman.2024.120402] [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: 10/09/2023] [Revised: 12/22/2023] [Accepted: 02/13/2024] [Indexed: 03/03/2024]
Abstract
Interactions of microplastics (MPs) biofilm with antibiotic resistance genes (ARGs) and antibiotics in aquatic environments have made microplastic biofilm an issue of keen scholarly interest. The process of biofilm formation and the degree of ARGs enrichment in the presence of antibiotic-selective pressure and the impact on the microbial community need to be further investigated. In this paper, the selective pressure of ciprofloxacin (CIP) and illumination conditions were investigated to affect the physicochemical properties, biomass, and extracellular polymer secretion of polyvinyl chloride (PVC) microplastic biofilm. In addition, relative copy numbers of nine ARGs were analyzed by real-time quantitative polymerase chain reaction (qPCR). In the presence of CIP, microorganisms in the water and microplastic biofilm were more inclined to carry associated ARGs (2-3 times higher), which had a contributing effect on ARGs enrichment. The process of pre-microplastic biofilm formation might have an inhibitory effect on ARGs (total relative abundance up to 0.151) transfer and proliferation compared to the surrounding water (total relative abundance up to 0.488). However, in the presence of CIP stress, microplastic biofilm maintained the abundance of ARGs (from 0.151 to 0.149) better compared to the surrounding water (from 0.488 to 0.386). Therefore, microplastic biofilm act as abundance buffer island of ARGs stabilizing the concentration of ARGs. In addition, high-throughput analyses showed the presence of antibiotic-resistant (Pseudomonas) and pathogenic (Vibrio) microorganisms in biofilm under different conditions. The above research deepens our understanding of ARGs enrichment in biofilm and provides important insights into the ecological risks of interactions between ARGs, antibiotics, and microplastic biofilm.
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Affiliation(s)
- Zhijie Zheng
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Xiaolong Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Wenzhu Zhang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Lan Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Honghong Lyu
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Jingchun Tang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
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4
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Liu Z, Liao X, Zhang Y, Li S, Ye M, Gan Q, Fang X, Mo Z, Huang Y, Liang Z, Dai W, Sun S. A highly efficient process to enhance the bioleaching of spent lithium-ion batteries by bifunctional pyrite combined with elemental sulfur. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119954. [PMID: 38169252 DOI: 10.1016/j.jenvman.2023.119954] [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: 10/29/2023] [Revised: 12/11/2023] [Accepted: 12/23/2023] [Indexed: 01/05/2024]
Abstract
Bioleaching technologies have been shown to be an environmentally friendly and economically beneficial tool for extracting metals from spent lithium-ion batteries (LIBs). However, conventional bioleaching methods have exhibited low efficiency in recovering metals from spent LIBs. Therefore, relied on the sustainability principle of using waste to treat waste, this study employed pyrite (FeS2) as an energy substance with reducing properties and investigated its effects in combination with elemental sulfur (S0) or FeSO4 on metals bioleaching from spent LIBs. Results demonstrated that the bioleaching efficiency was significantly higher in the leaching system constructed with FeS2 + S0, than in the FeS2 + FeSO4 or FeS2 system. When the pulp densities of FeS2, S0 and spent LIBs were 10 g L-1, 5 g L-1 and 10 g L-1, respectively, the leaching efficiency of Li, Ni, Co and Mn all reached 100%. Mechanistic analysis reveals that in the FeS2 + S0 system, the activity and acid-producing capabilities of iron-sulfur oxidizing bacteria were enhanced, promoting the generation of Fe (Ⅱ) and reducible sulfur compounds. Simultaneously, bio-acids were shown to disrupt the structure of the LIBs, thereby increasing the contact area between Fe (Ⅱ) and sulfur compounds containing high-valence metals. This effectively promoted the reduction of high-valence metals, thereby enhancing their leaching efficiency. Overall, the FeS2 + S0 bioleaching process constructed in this study, improved the leaching efficiency of LIBs while also effectively utilizing waste, providing technical support for the comprehensive and sustainable management of solid waste.
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Affiliation(s)
- Zihang Liu
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Xiaojian Liao
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuman Zhang
- School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
| | - Shoupeng Li
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Maoyou Ye
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Qiaowei Gan
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Xiaodi Fang
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhihua Mo
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Yu Huang
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhenyun Liang
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Wencan Dai
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
| | - Shuiyu Sun
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216, China.
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5
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Wang J, Liu Y, Luo W, Wang X, Liao R, Yu S, Hong M, Zhao C, Yang B, Liu Y, Liu X, Qiu G. Inhibition of humic acid on copper pollution caused by chalcopyrite biooxidation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 851:158200. [PMID: 36049690 DOI: 10.1016/j.scitotenv.2022.158200] [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: 05/19/2022] [Revised: 08/12/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Humic acid has the advantages of wide source, easy availability and environmental friendliness, which may be a good choice for inhibiting chalcopyrite biooxidation and alleviating copper pollution. However, there are few researches on the inhibitory effect and mechanism of humic acid on the biooxidation of chalcopyrite. In order to fill this knowledge gap, this study proposed and validated a novel method for inhibiting chalcopyrite biooxidation by means of humic acid. The results showed that the biooxidation of chalcopyrite could be effectively inhibited by humic acid, which consequently decreased the release of copper ions. Humic acid with a concentration of 120 ppm had the best inhibitory effect, which reduced the biooxidation efficiency of chalcopyrite from 40.7 ± 0.5 % to 29.3 ± 0.8 %. This in turn suggested that humic acid could effectively suppress the pollution of copper under these conditions. The analysis results of solution parameters, mineral surface morphology, mineral phases and element composition showed that humic acid inhibited the growth of Acidithiobacillus ferrooxidans, promoted the formation of jarosite and intensified the passivation of chalcopyrite, which effectively hindered the biooxidation of chalcopyrite, and would help to alleviate the pollution of copper.
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Affiliation(s)
- Jun Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Yuling Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Wen Luo
- Department of Dermatology, The First Hospital of Changsha, Changsha, China
| | - Xingxing Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Rui Liao
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Shichao Yu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China.
| | - Maoxin Hong
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Chunxiao Zhao
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Baojun Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China.
| | - Yang Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China.
| | - Xueduan Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Guanzhou Qiu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
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6
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Acidithiobacillus ferrooxidans and mixed Acidophilic microbiota oxidation to remove sulphur impurity from iron concentrate. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Fang X, Sun S, Liao X, Li S, Zhou S, Gan Q, Zeng L, Guan Z. Effect of diurnal temperature range on bioleaching of sulfide ore by an artificial microbial consortium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150234. [PMID: 34562759 DOI: 10.1016/j.scitotenv.2021.150234] [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: 06/18/2021] [Revised: 08/28/2021] [Accepted: 09/05/2021] [Indexed: 06/13/2023]
Abstract
Temperature is considered to be one of the main factors affecting bioleaching, but few studies have assessed the effects of diurnal temperature range (DTR) on the bioleaching process. This study investigates the effects of different bioleaching temperatures (30 and 40 °C) and DTR on the bioleaching of metal sulfide ores by microbial communities. The results showed that DTR had an obvious inhibitory effect on the bioleaching efficiency of the artificial microbial community, although this effect was mainly concentrated in the early and middle stages (0-18 days) of exposure, gradually decreasing until almost disappearing in the late stage (18-24 days). Extracellular polymeric substance (EPS) analysis showed that DTR did not change the composition of the EPS matrix (humic acid-like substances, polysaccharides and protein-like substances), but had a significant effect on the generative behavior of EPS, inhibiting the secretion of EPS during the early and middle stages of the bioleaching process. However, the continual increase in EPS secretion in the bioleaching system gradually reduced the adverse effects of DTR on mineral dissolution. X-ray diffraction (XRD), Fourier transform infrared (FTIR) and Scanning electron microscopy- energy dispersive spectrometry (SEM-EDS) analysis of the bioleached residue showed that DTR had no obvious effect on the mineralogical characteristics of sulfide ore. Therefore, in industrial sulfide ore bioleaching applications, in order to accelerate the artificial microbial community start-up process, temperature control measures should be increased in the bioleaching process to reduce the adverse effects of DTR on mineral dissolution.
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Affiliation(s)
- Xiaodi Fang
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Shuiyu Sun
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216, China
| | - Xiaojian Liao
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Shoupeng Li
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
| | - Siyu Zhou
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Qiaowei Gan
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Liuting Zeng
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhijie Guan
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
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8
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Zhao C, Yang B, Liao R, Hong M, Yu S, Wang J, Qiu G. Catalytic mechanism of manganese ions and visible light on chalcopyrite bioleaching in the presence of Acidithiobacillus ferrooxidans. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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9
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Yang B, Luo W, Hong M, Wang J, Liu X, Gan M, Qiu G. Inhibition of hematite on acid mine drainage caused by chalcopyrite biodissolution. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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10
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Chalcocite (bio)hydrometallurgy—current state, mechanism, and future directions: a review. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2021.12.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Ma L, Huang S, Wu P, Xiong J, Wang H, Liao H, Liu X. The interaction of acidophiles driving community functional responses to the re-inoculated chalcopyrite bioleaching process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 798:149186. [PMID: 34375243 DOI: 10.1016/j.scitotenv.2021.149186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/15/2021] [Accepted: 07/17/2021] [Indexed: 06/13/2023]
Abstract
Re-inoculation was an effective way to improve bioleaching efficiency by enhancing the synergetic effects of biogenic Fe3+ coupling with S0 oxidation. However, the complex microbial interactions after re-inoculation have received far less attention, which was crucial to the bioleaching performances. Herein, the enriched ferrous oxidizers (FeO) or sulfur oxidizers (SO) were inoculated to chalcopyrite microcosm, then they were crossly re-inoculated again to characterize the interspecific interaction patterns. The results showed that the dominant species in Fe groups were Acidithiobacillus ferrooxidans, while A. thiooxidans predominated in S groups. Introducing FeO resulted in a great disturbance by shifting the community diversity and evenness significantly (p < 0.05). In comparison, the communities intensified by SO maintained the original composition and structures. Microbial networks were constructed positively and modularly. The networks intensified by FeO were less connected and complex with less nodes and edges, but showed faster responses to the re-inoculation disturbance reflected by shorter average path length. Interestingly, the genus Leptospirillum were identified as keystones in S groups, playing critical roles in iron-oxidizing with lots of sulfur oxidizers. The introduced sulfur oxidizers enhanced microbial cooperation, formed robust community with strong bio-dissolution capability, and harbored the highest bioleaching efficiency. These findings improved our understanding about the acidophiles interactions, which drive community functional responses to the re-inoculated bioleaching process.
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Affiliation(s)
- Liyuan Ma
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China.
| | - Shanshan Huang
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China; School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Peiyi Wu
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Junming Xiong
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Hongmei Wang
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Hehuan Liao
- Springboard, San Francisco, CA 94063, United States
| | - Xueduan Liu
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China; School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
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12
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Liao R, Yang B, Huang X, Hong M, Yu S, Liu S, Wang J, Qiu G. Combined effect of silver ion and pyrite on AMD formation generated by chalcopyrite bio-dissolution. CHEMOSPHERE 2021; 279:130516. [PMID: 33878694 DOI: 10.1016/j.chemosphere.2021.130516] [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: 12/10/2020] [Revised: 03/17/2021] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
Chalcopyrite is a crucial contributor causing acid mine drainage (AMD). Silver and pyrite are commonly co-existed with chalcopyrite, and can significantly affect the copper release from chalcopyrite bio-dissolution process. However, the combined effect of them on chalcopyrite bio-dissolution has not been illustrated up to now. To fill this knowledge gap, the combined effect of silver and pyrite on chalcopyrite dissolution with Acidithiobacillus ferrooxidans was investigated in this study. The copper extraction reached the maximum value (62.3 ± 0.1%) with the presence of silver and pyrite, which was 43.8 ± 0.1% higher than the control group (without addition). This suggested more copper ions and acids were released under this circumstance. According to bio-dissolution results, SEM, XRD and XPS analyses, the promotion effect of silver and pyrite on chalcopyrite bio-dissolution was mainly attributed to the increase of ferric ions in solution and the reduction of passivation layer (Sn2-/S0) on chalcopyrite surface. The investigation into the bio-dissolution of chalcopyrite is important for controlling the generation of copper ions and acids. Silver or pyrite bearing chalcopyrite should be carefully treated to avoid the pollution of heavy metal copper and acid in the mining environment.
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Affiliation(s)
- Rui Liao
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, China
| | - Baojun Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, China
| | - Xiaotao Huang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, China
| | - Maoxing Hong
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, China
| | - Shichao Yu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, China
| | - Shitong Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, China
| | - Jun Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, China.
| | - Guanzhou Qiu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, China
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13
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S B, Manu B, M Y S. Bioleaching of iron from laterite soil using an isolated Acidithiobacillus ferrooxidans strain and application of leached laterite iron as Fenton's catalyst in selective herbicide degradation. PLoS One 2021; 16:e0243444. [PMID: 33784303 PMCID: PMC8009436 DOI: 10.1371/journal.pone.0243444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/23/2020] [Indexed: 11/23/2022] Open
Abstract
A novel isolated strain Acidithiobacillus ferrooxidans BMSNITK17 has been investigated for its bioleaching potential from lateritic soil and the results are presented. System conditions like pH, feed mineral particle size, pulp density, temperature, rotor speed influences bioleaching potential of Acidithiobcillus ferrooxidans BMSNITK17 in leaching out iron from laterite soil. Effect of sulfate addition on bioleaching efficiency is studied. The bioleached laterite iron (BLFe's) on evaluation for its catalytic role in Fenton's oxidation for the degradation of ametryn and dicamba exhibits 94.24% of ametryn degradation and 92.45% of dicamba degradation efficiency. Fenton's oxidation performed well with the acidic pH 3. The study confirms the role of Acidithiobacillus ferrooxidans in leaching iron from lateritic ore and the usage of bioleached lateritic iron as catalyst in the Fenton's Oxidation.
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Affiliation(s)
- Bhaskar S
- Department of Civil Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India
| | - Basavaraju Manu
- Department of Civil Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, India
| | - Sreenivasa M Y
- Department of Studies in Microbiology, University of Mysore, Mysuru, Karnataka, India
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14
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Feng S, Yin Y, Yin Z, Zhang H, Zhu D, Tong Y, Yang H. Simultaneously enhance iron/sulfur metabolism in column bioleaching of chalcocite by pyrite and sulfur oxidizers based on joint utilization of waste resource. ENVIRONMENTAL RESEARCH 2021; 194:110702. [PMID: 33400950 DOI: 10.1016/j.envres.2020.110702] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/21/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
In chalcocite (Cu2S) bioleaching, the lack of iron metabolism is a key restricting factor. As the most common sulfide mineral, pyrite (FeS2) can release Fe(Ⅱ) and compensate for the iron metabolism deficiency in chalcocite bioleaching. The bioleaching of chalcocite in an imitated industrial system was improved by enhancing the iron-sulfur metabolism simultaneously using pyrite and sulfur oxidizers based on the joint utilization of waste resources, while the bioleaching performance and community structure in the leachate were systematically investigated. Due to the active sulfur/iron metabolism, the pH reached 1.2, and Fe3+ was increased by 77.78%, while the biomass of planktonic cells was improved to 2.19 × 107 cells/mL. Fourier transform infrared reflection (FTIR) and X-ray diffraction (XRD) analysis results showed that more iron-sulfur crystals were produced due to more active iron-sulfur metabolism. Scanning electron microscopy (SEM) revealed that many derivative particles and corrosion marks appeared on the surface of the ore, implying that the mineral-microbe interaction was strengthened. Confocal laser scanning microscopy (CLSM) showed the accumulation of cells and extracellular polymeric substances (EPS) on the ore surface, indicating a stronger contact leaching mechanism. Furthermore, the community structure and canonical correspondence analysis (CCA) demonstrated that the introduction of sulfur-oxidizing bacteria and pyrite could maintain the diversity of dominant leaching microorganisms at a high level. Sulfobacillus (27.75%) and Leptospirllillum (20.26%) were the dominant sulfur-oxidizing and iron-oxidizing bacteria during the bioleaching process. With the accumulation of multiple positive effects, the copper ion leaching rate was improved by 44.8%. In general, this new type of multiple intervention strategy can provide an important guide for the bioleaching of low-grade ores.
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Affiliation(s)
- Shoushuai Feng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Yijun Yin
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Zongwei Yin
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Hailing Zhang
- Department of Biological Engineering, College of Life Science, Yantai University, Shandong, 408100, China
| | - Deqiang Zhu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353, China.
| | - Yanjun Tong
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Hailin Yang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China; Key Laboratory of Carbohydrate Chemistry and Biotechnology (Jiangnan University) Ministry of Education, China.
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15
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Yang B, Luo W, Wang X, Yu S, Gan M, Wang J, Liu X, Qiu G. The use of biochar for controlling acid mine drainage through the inhibition of chalcopyrite biodissolution. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 737:139485. [PMID: 32516660 DOI: 10.1016/j.scitotenv.2020.139485] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 04/21/2020] [Accepted: 05/14/2020] [Indexed: 06/11/2023]
Abstract
Although chalcopyrite biodissolution plays an important role in the formation of acid mine drainage (AMD), the control of AMD through inhibiting the biodissolution of chalcopyrite has not been studied until now. In order to fill this knowledge gap, a novel method for inhibiting chalcopyrite biodissolution using biochar was proposed and verified. The effects of biochar pyrolysis temperature and biochar concentration on the inhibition of chalcopyrite biodissolution in the presence of Acidithiobacillus ferrooxidans (A. ferrooxidans) were studied. The results indicate that biochar significantly inhibited chalcopyrite biodissolution, thus reducing the number of copper and iron ions and quantity of acid released. In turn, this suggests that AMD generation was suppressed under these conditions. Biochar pyrolyzed at 300 °C (Biochar-300 °C) was the most effective at inhibiting chalcopyrite biodissolution and reduced its biodissolution rate by 17.7%. A suitable concentration of biochar-300 °C enhanced its inhibition of chalcopyrite biodissolution. The optimal concentration of biochar-300 °C for inhibiting chalcopyrite biodissolution was 3 g/L. Biodissolution results, cyclic voltammetry, mineral surface morphology, mineralogical phase, and elemental composition analyses reveal that biochar inhibited the biodissolution of chalcopyrite by promoting the formation of passivation layer (jarosite and Sn2-/S0) and adsorbing bacteria.
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Affiliation(s)
- Baojun Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Wen Luo
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Xingxing Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Shichao Yu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Min Gan
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Jun Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China.
| | - Xueduan Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Guanzhou Qiu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
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16
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Wang X, Ma L, Wu J, Xiao Y, Tao J, Liu X. Effective bioleaching of low-grade copper ores: Insights from microbial cross experiments. BIORESOURCE TECHNOLOGY 2020; 308:123273. [PMID: 32247948 DOI: 10.1016/j.biortech.2020.123273] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
The interaction between microorganisms and minerals was a hot topic to reveal the transformation of key elements that affecting bioleaching efficiency. Three typical low-grade copper ores, the main copper-bearing components of which were primary sulfide, secondary sulfide and high-oxidative sulfide copper, were obtained from Dexing, Zijinshan and Luanshya copper mine, respectively. Meanwhile, six typical microorganisms were isolated from each of the three habitats, and assembled as communities based on their origins. Cross bioleaching was carried out under identical conditions. The leaching parameters showed that native strains played excellent roles in their corresponding ore bioleaching process, and community structure was greatly determined by mineral composition, indicating that domestication for longitudinal adaption was an effective way to improve microbial leaching performance. Leptospirillum ferriphilum and Acidithiobacillus ferrooxidans promoted copper release by shifting redox potential and pH of the leachate, respectively, indicating that microbial population regulation was another effective way to improve bioleaching efficiency.
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Affiliation(s)
- Xingjie Wang
- School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Liyuan Ma
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China; Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China.
| | - Jiangjun Wu
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Yunhua Xiao
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Jiemeng Tao
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
| | - Xueduan Liu
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China
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17
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Yang B, Zhao C, Luo W, Liao R, Gan M, Wang J, Liu X, Qiu G. Catalytic effect of silver on copper release from chalcopyrite mediated by Acidithiobacillus ferrooxidans. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122290. [PMID: 32092647 DOI: 10.1016/j.jhazmat.2020.122290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/23/2020] [Accepted: 02/11/2020] [Indexed: 06/10/2023]
Abstract
Although silver ion in the solution is an important factor affecting the biodissolution of chalcopyrite, the effect of silver ion on the release of copper ion from chalcopyrite to the environment has not been explored until now. In order to fill this knowledge gap, the effect of silver ion on copper release from chalcopyrite in the presence of Acidithiobacillus ferrooxidans was investigated. The results indicate that silver ion significantly enhanced chalcopyrite biodissolution, thereby releasing more copper ion. In turn, this indicates that the release of copper ion from chalcopyrite to the environment was increased under these conditions. Biodissolution results, bacterial adsorption experiments, elemental composition analysis, and electrochemical analysis reveal that the enhancement of silver ion on copper ion release from chalcopyrite was mainly attributed to the improvement of electrochemical activity of chalcopyrite and the inhibition of the formation of passivation layer (Sn2-/S0) on the chalcopyrite surface. This study provides a better understanding of the effect of silver ion on the release of copper ion from chalcopyrite to the environment. In the future, the influence of silver ion on chalcopyrite biodissolution should be considered in the evaluation of copper ion pollution to ensure reliability.
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Affiliation(s)
- Baojun Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Chunxiao Zhao
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Wen Luo
- Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Rui Liao
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Min Gan
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Jun Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China.
| | - Xueduan Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
| | - Guanzhou Qiu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China; Key Laboratory of Biohydrometallurgy, Ministry of Education, Changsha, China
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18
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Li Q, Zhang M, Yang J, Liu Q, Zhang G, Liao Q, Liu H, Wang Q. Formation and stability of biogenic tooeleite during Fe(II) oxidation by Acidithiobacillus ferrooxidans. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110755. [PMID: 32279796 DOI: 10.1016/j.msec.2020.110755] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/06/2020] [Accepted: 02/15/2020] [Indexed: 11/16/2022]
Abstract
Tooeleite is the only known ferric arsenite sulfate mineral and has environmental significance for arsenic remediation. This study investigated the formation and stability of biogenic tooeleite in Fe(II)-As(III)-SO42- environment using Acidithiobacillus ferrooxidans under the ambient conditions. The results show that bacteria facilitated the formation and crystallization of tooeleite owing to the microbial oxidation of Fe(II) to Fe(III). Due to the better growth of bacteria, the higher removal of As(III) by tooeleite formation was achieved under 8.978-10.806 g/L initial Fe(II) concentration and 2.00-3.00 initial pH, and the highest efficiency was ~95%. Fe(III) and As(III) precipitated simultaneously into two types of tooeleite. The relatively stable tooeleite is featured by the developed (020) crystal face and the bulk-like structure with thick flakes. This study yields a better understanding of biogenic tooeleite, and the importance of tooeleite formation in As(III)-rich environment for arsenic remediation.
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Affiliation(s)
- Qingzhu Li
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China; Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410083, China
| | - Mengxue Zhang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Jinqin Yang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Qianwen Liu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Guanshi Zhang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Qi Liao
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China; Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410083, China
| | - Hui Liu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China; Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410083, China
| | - Qingwei Wang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China; Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410083, China; Shandong Humon Smelting Co., Ltd., Yantai, 264109, China.
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