title: Simultaneous degradation of refractory organic pesticide and bioelectricity generation in a soil microbial fuel cell with different conditions.
abstract: In this study, the soil microbial fuel cells (MFCs) were constructed based on sandy soil to remove the refractory organic pesticide hexachlorobenzene (HCB) in topsoil by a simple method. The construction of membraneless single-chamber soil MFCs by setting up the cathode- and the anode-activated carbon, inoculating the sludge and adding the co-substrates can promote HCB removal significantly. The results showed that HCB removal efficiencies in the soils contaminated with 40, 80  and 200 mg/kg were 71.14%, 62.15% and 50.06%, respectively, which were 18.65%, 18.46% and 19.17% higher than the control, respectively. The electricity generation of soil MFCs in different HCB concentrations was analyzed. The highest power density reached was 70.8 mW/m2, and an internal resistance of approximately 960 Ω was obtained when an external resistance loading of 1000 Ω was connected. Meanwhile, the influences of temperature, substrate species and substrate concentrations on soil MFCs initial electricity production were investigated. The addition of the anionic surfactant sodium dodecyl sulfate (SDS) into the soil MFCs system contributed to the improvement in HCB removal efficiency.
authors.affiliation: a School of Energy and Environment, Southeast University , Nanjing , People's Republic of China.
authors.forename: Xian
authors.initials: X
authors.lastname: Cao
authors.affiliation: a School of Energy and Environment, Southeast University , Nanjing , People's Republic of China.
authors.forename: Chunyan
authors.initials: C
authors.lastname: Yu
authors.affiliation: a School of Energy and Environment, Southeast University , Nanjing , People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.affiliation: a School of Energy and Environment, Southeast University , Nanjing , People's Republic of China.
authors.forename: Fang
authors.initials: F
authors.lastname: Zhou
authors.affiliation: a School of Energy and Environment, Southeast University , Nanjing , People's Republic of China.
authors.forename: Xianning
authors.initials: X
authors.lastname: Li
mesh_terms: D001674:Bioelectric Energy Sources; D002384:Catalysis; D002681:China; D004560:Electricity; D004566:Electrodes; D008401:Gas Chromatography-Mass Spectrometry; D006581:Hexachlorobenzene / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry*; D010575:Pesticides / Q000737:chemistry*; D012967:Sodium Dodecyl Sulfate; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000737:chemistry*; D013379:Substrate Specificity; D013501:Surface-Active Agents / Q000737:chemistry; D013696:Temperature
chemical_list: D009930:Organic Chemicals; D010575:Pesticides; D012987:Soil; D012989:Soil Pollutants; D013501:Surface-Active Agents; D012967:Sodium Dodecyl Sulfate; D006581:Hexachlorobenzene
keywords: Microbial fuel cell; bioelectricity generation; degradation; refractory organic pesticide; soil