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Article Abstract
Aromatic chlorinated compounds and Cr(VI) in groundwater pose significant challenges due to their resistance. This study explores microbial fuel cells using low-cost Si-modified ferrihydrite (SiFh) electrodes for simultaneous chlorobenzene and Cr(VI) removal. The voltage output of MFC assembled with SiFh modified electrode was approximately 1.63 times higher than the bare electrode, achieving 1.23 times higher in chlorobenzene degradation efficiency. CF-SiFh loaded MFC had the highest power generation and best EET efficiency, which was positive to greatest and fastest chlorobenzene removal. Microbial community analysis identified the dominance of Cupriavidus and Pandoraea in chlorobenzene oxidation, while Lentimicrobiaceae and Rhodobacteraceae were key genera that may facilitate direct and indirect electron transfer within the biofilms. Cr species analysis in solution and solids confirmed it was reduced to Cr(OH) or CrFe(OH) coprecipitates at cathode. MFCs with SiFh-modified electrodes thus offer a promising technology for simultaneous chlorinated compound and Cr(VI) removal, promising in contaminated groundwater remediation.
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| http://dx.doi.org/10.1016/j.biortech.2024.131639 | DOI Listing |
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Simultaneous removal of chlorobenzene and Cr(VI) from groundwater using microbial fuel cell with low-cost Si modified ferrihydrite electrodes.
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December 2024
Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China. Electronic address:
Aromatic chlorinated compounds and Cr(VI) in groundwater pose significant challenges due to their resistance. This study explores microbial fuel cells using low-cost Si-modified ferrihydrite (SiFh) electrodes for simultaneous chlorobenzene and Cr(VI) removal. The voltage output of MFC assembled with SiFh modified electrode was approximately 1.
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J Environ Manage
May 2024
Department of Environmental Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu, 610065, PR China.
Article Synopsis
- Chemical oxidation processes, commonly used to clean up contaminated soils, can inadvertently convert toxic Cr(III) to more harmful Cr(VI), especially when remediating 2-chlorophenol (2-CP) contaminated sites.
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College of Environmental Science and Engineering, Guilin University of Technology, Guilin, People's Republic of China.
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September 2022
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