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Zhang J, Jiao W, Huang S, Wang H, Cao X, Li X, Sakamaki T. Application of microbial fuel cell technology to the remediation of compound heavy metal contamination in soil. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 320:115670. [PMID: 35921747 DOI: 10.1016/j.jenvman.2022.115670] [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: 04/05/2022] [Revised: 06/27/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Exploring the removal rules of MFC on composite heavy metal pollution is very important for the future development and field application of MFC. We constructed a three-chamber soil MFC and the results showed that with the gradual deterioration of soil heavy metal contamination from single heavy metal to metals in different oxidation states (e.g., copper (II), lead (II), and chromium (III) compounds), the internal resistance of the soil MFC increased by 2.16-2.71 times, which significantly inhibited the power production performance of the MFC. After 59 days of remediation, the migration removal efficiencies of total Cu, total Cr and total Pb from the soil under composite conditions were 36.69%, 52.35% and 19.67%, respectively. The main removal mechanisms included both electromigration and diffusion, where electromigration contributed 74.41%, 31.48% and 97.67% to the removal of total Cu, Cr and Pb, respectively. The removal of composite heavy metals was affected by adsorption-desorption competition and synergism. The competition of Pb for specific adsorption sites in soil leads to the increase of mobility of Cr and Cu, which is conducive to migration and removal. The migration of Cu and Pb ions to the cathode inhibited the diffusion of Cr to the anode; however, it drove the synergistic migration of Pb ions to the cathode. For the heavy metals migrated from the soil into the catholyte, only Cu2+ with high redox potential is reduced to copper at the cathode.
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Affiliation(s)
- Jingran Zhang
- School of Energy and Environment, Southeast University, Nanjing, 210096, People's Republic of China; Chinese Academy of Sciences, Research Center for Eco-environmental Sciences, Beijing, 100085, People's Republic of China.
| | - Wentao Jiao
- Chinese Academy of Sciences, Research Center for Eco-environmental Sciences, Beijing, 100085, People's Republic of China.
| | - Shan Huang
- School of Civil Engineering and Architecture, East China Jiao Tong University, Nanchang, 330013, People's Republic of China.
| | - Hui Wang
- School of Energy and Environment, Southeast University, Nanjing, 210096, People's Republic of China; School of Municipal Engineering, Xi'an University of Technology, Xi'an, 710048, People's Republic of China.
| | - Xian Cao
- School of Energy and Environment, Southeast University, Nanjing, 210096, People's Republic of China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki 6-6-06, Sendai, 980-8579, Japan.
| | - Xianning Li
- School of Energy and Environment, Southeast University, Nanjing, 210096, People's Republic of China.
| | - Takashi Sakamaki
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki 6-6-06, Sendai, 980-8579, Japan.
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Sun Y, Wang H, Long X, Xi H, Biao P, Yang W. Advance in remediated of heavy metals by soil microbial fuel cells: Mechanism and application. Front Microbiol 2022; 13:997732. [PMID: 36246218 PMCID: PMC9559399 DOI: 10.3389/fmicb.2022.997732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/23/2022] [Indexed: 11/13/2022] Open
Abstract
In the past decade, studies on the remediation of heavy metals contaminated soil by microbial fuel cells (MFCs) have attracted broad attention because of the self-generated power and their multifield principles such as the extracellular electron transfer (EET) reduction, electromigration for heavy metals removal. However, given the bio electro-motive power from soil MFCs is weak and fluctuated during the remediation, we need to comprehensively understand the origination of driving force in MFC based on the analysis of the fundamental rationale of ion moving in cells and improve the performance via the appropriate configurations and operations. In this review, we first described the structures of soil MFCs for heavy metals remediation and compared the advantages of different types of configurations. Then, based on the theoretical models of heavy metal migration, enrichment, and reduction in soil MFCs, the optimization of soil MFCs including the length of the remediation area, soil conductivity, control of electrode reaction, and modification of electrodes were proposed. Accordingly, this review contributes to the application of bioelectrochemistry to efficiently remove heavy metals from soils.
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Affiliation(s)
- Yingying Sun
- Technology Innovation Center for Land Engineering and Human Settlements, Shaanxi Land Engineering Construction Group Co., Ltd. and Xi’an Jiaotong University, Xi’an, China
| | - Hui Wang
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an, China
- Department of Municipal and Environmental Engineering, School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an, China
- *Correspondence: Hui Wang, ; Xizi Long,
| | - Xizi Long
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
- *Correspondence: Hui Wang, ; Xizi Long,
| | - Hui Xi
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
| | - Peng Biao
- Technology Innovation Center for Land Engineering and Human Settlements, Shaanxi Land Engineering Construction Group Co., Ltd. and Xi’an Jiaotong University, Xi’an, China
| | - Wei Yang
- Technology Innovation Center for Land Engineering and Human Settlements, Shaanxi Land Engineering Construction Group Co., Ltd. and Xi’an Jiaotong University, Xi’an, China
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