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Simultaneous enhancement of heavy metal removal and electricity generation in soil microbial fuel cell.
Ecotoxicol Environ Saf. 2020 Apr 01; 192:110314.EE

Abstract

As an environmentally sustainable bioelectrochemical technology, the microbial fuel cell (MFC) has attracted great attention. In this study, a three-chamber MFC (TC-MFC) was enhanced with different auxiliary reagents to remove heavy metals from soil. The results showed that the removal efficiency of heavy metals from soil increased with increasing auxiliary reagent concentration. When 1 mol/L citric acid, HCl, or acetic acid were used as an auxiliary reagent, the total copper (500 mg/kg) removal efficiency after 74 days of TC-MFC treatment was 3.89, 5.01 and 2.01 times that of the control group, respectively. The highest soil electrical conductivity (15.29 ms/cm), ionic heavy metal content (94.78%), electricity generation performance (363.04 mW h), and desorption stability of heavy metals were obtained when using 1 mol/L HCl as an auxiliary reagent, indicating that HCl was more suitable for the remediation of heavy metals in soil using a TC-MFC. Correlation analysis showed that the electricity generation of the TC-MFC was linearly related to the removal efficiency of heavy metals from soil (R2 = 0.9296). At the same time, higher content of ionic heavy metals in the soil led to better migration of heavy metals under the internal electric field of the TC-MFC.

Authors+Show Affiliations

School of Energy and Environment, Southeast University, Nanjing, 210096, China. Electronic address: zhangjingran1993@163.com.School of Energy and Environment, Southeast University, Nanjing, 210096, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki 6-6-06, Sendai, 980-8579, Japan. Electronic address: c_caoxian@163.com.School of Energy and Environment, Southeast University, Nanjing, 210096, China; School of Municipal Engineering, Xi'an University of Technology, Xi'an, 710048, China. Electronic address: lwcq306@163.com.School of Energy and Environment, Southeast University, Nanjing, 210096, China. Electronic address: xizi_long@163.com.School of Energy and Environment, Southeast University, Nanjing, 210096, China. Electronic address: lxnseu@163.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32061983

Citation

Zhang, Jingran, et al. "Simultaneous Enhancement of Heavy Metal Removal and Electricity Generation in Soil Microbial Fuel Cell." Ecotoxicology and Environmental Safety, vol. 192, 2020, p. 110314.
Zhang J, Cao X, Wang H, et al. Simultaneous enhancement of heavy metal removal and electricity generation in soil microbial fuel cell. Ecotoxicol Environ Saf. 2020;192:110314.
Zhang, J., Cao, X., Wang, H., Long, X., & Li, X. (2020). Simultaneous enhancement of heavy metal removal and electricity generation in soil microbial fuel cell. Ecotoxicology and Environmental Safety, 192, 110314. https://doi.org/10.1016/j.ecoenv.2020.110314
Zhang J, et al. Simultaneous Enhancement of Heavy Metal Removal and Electricity Generation in Soil Microbial Fuel Cell. Ecotoxicol Environ Saf. 2020 Apr 1;192:110314. PubMed PMID: 32061983.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Simultaneous enhancement of heavy metal removal and electricity generation in soil microbial fuel cell. AU - Zhang,Jingran, AU - Cao,Xian, AU - Wang,Hui, AU - Long,Xizi, AU - Li,Xianning, Y1 - 2020/02/13/ PY - 2019/10/21/received PY - 2020/02/04/revised PY - 2020/02/06/accepted PY - 2020/2/18/pubmed PY - 2020/5/21/medline PY - 2020/2/17/entrez KW - Contaminated soils KW - Copper KW - Electricity generation KW - Microbial fuel cell KW - Migration SP - 110314 EP - 110314 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 192 N2 - As an environmentally sustainable bioelectrochemical technology, the microbial fuel cell (MFC) has attracted great attention. In this study, a three-chamber MFC (TC-MFC) was enhanced with different auxiliary reagents to remove heavy metals from soil. The results showed that the removal efficiency of heavy metals from soil increased with increasing auxiliary reagent concentration. When 1 mol/L citric acid, HCl, or acetic acid were used as an auxiliary reagent, the total copper (500 mg/kg) removal efficiency after 74 days of TC-MFC treatment was 3.89, 5.01 and 2.01 times that of the control group, respectively. The highest soil electrical conductivity (15.29 ms/cm), ionic heavy metal content (94.78%), electricity generation performance (363.04 mW h), and desorption stability of heavy metals were obtained when using 1 mol/L HCl as an auxiliary reagent, indicating that HCl was more suitable for the remediation of heavy metals in soil using a TC-MFC. Correlation analysis showed that the electricity generation of the TC-MFC was linearly related to the removal efficiency of heavy metals from soil (R2 = 0.9296). At the same time, higher content of ionic heavy metals in the soil led to better migration of heavy metals under the internal electric field of the TC-MFC. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/32061983/Simultaneous_enhancement_of_heavy_metal_removal_and_electricity_generation_in_soil_microbial_fuel_cell_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(20)30153-6 DB - PRIME DP - Unbound Medicine ER -