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[Utilization of Copper (Ⅱ) Wastewater for Enhancing the Treatment of Chromium (Ⅵ) Wastewater in Microbial Fuel Cells].
Huan Jing Ke Xue. 2017 Oct 08; 38(10):4262-4270.HJ

Abstract

The effect of copper (Ⅱ) wastewater addition on the treatment of chromium (Ⅵ) wastewater in dual-chamber microbial fuel cells (MFCs) was investigated for different Cr(Ⅵ)/Cu(Ⅱ) concentration ratios (2:1, 1:1, 1:2, 1:4) and external resistances (10, 500, 1000, 2000 Ω). The results demonstrated that the addition of Cu(Ⅱ) and Cr(Ⅵ) into the cathode chamber of MFCs could enhance the Cr(Ⅵ) removal efficiency. The Cr(Ⅵ) removal efficiency increased with the increase in the Cr(Ⅵ)/Cu(Ⅱ) concentration ratio. The Cu(Ⅱ) on the Cr(Ⅵ) removal efficiencies increased with the decrease of external resistance. The highest Cr(Ⅵ) removal efficiency achieved was 91.00% in MFC at the Cr(Ⅵ)/Cu(Ⅱ) concentration ratio of 1:4 and external resistance of 10 Ω, which was 132.57% higher than the MFC with Cr(Ⅵ) only (39.13%). The scanning electron microscopy with coupled energy dispersive spectroscopy (SEM-EDS) and X-ray photoelectron spectroscopy (XPS) analyses of the cathode electrode at the end of the experiments indicated that Cr(Ⅵ) reduced to non-conductive Cr(Ⅲ) deposits (Cr2O3) on the cathode electrode, resulting in cathode deactivation which blocked the electron transfer. However, the addition of Cu(Ⅱ) could improve the electrical conductivity of the cathode due to its conductive reduzates (copper and Cu2O) on the cathode which could reduce the cathode deactivation and subsequently enhance the Cr(Ⅵ) removal efficiency.

Authors+Show Affiliations

Bioenergy Research Institute, School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 211800, China.Bioenergy Research Institute, School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 211800, China.Bioenergy Research Institute, School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 211800, China.Bioenergy Research Institute, School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 211800, China.Bioenergy Research Institute, School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 211800, China.Bioenergy Research Institute, School of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 211800, China.

Pub Type(s)

Journal Article

Language

chi

PubMed ID

29965210

Citation

Xiong, Xiao-Min, et al. "[Utilization of Copper (Ⅱ) Wastewater for Enhancing the Treatment of Chromium (Ⅵ) Wastewater in Microbial Fuel Cells]." Huan Jing Ke Xue= Huanjing Kexue, vol. 38, no. 10, 2017, pp. 4262-4270.
Xiong XM, Wu XY, Jia HH, et al. [Utilization of Copper (Ⅱ) Wastewater for Enhancing the Treatment of Chromium (Ⅵ) Wastewater in Microbial Fuel Cells]. Huan Jing Ke Xue. 2017;38(10):4262-4270.
Xiong, X. M., Wu, X. Y., Jia, H. H., Yong, X. Y., Zhou, J., & Wei, P. (2017). [Utilization of Copper (Ⅱ) Wastewater for Enhancing the Treatment of Chromium (Ⅵ) Wastewater in Microbial Fuel Cells]. Huan Jing Ke Xue= Huanjing Kexue, 38(10), 4262-4270. https://doi.org/10.13227/j.hjkx.201703129
Xiong XM, et al. [Utilization of Copper (Ⅱ) Wastewater for Enhancing the Treatment of Chromium (Ⅵ) Wastewater in Microbial Fuel Cells]. Huan Jing Ke Xue. 2017 Oct 8;38(10):4262-4270. PubMed PMID: 29965210.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Utilization of Copper (Ⅱ) Wastewater for Enhancing the Treatment of Chromium (Ⅵ) Wastewater in Microbial Fuel Cells]. AU - Xiong,Xiao-Min, AU - Wu,Xia-Yuan, AU - Jia,Hong-Hua, AU - Yong,Xiao-Yu, AU - Zhou,Jun, AU - Wei,Ping, PY - 2018/7/3/entrez PY - 2018/7/3/pubmed PY - 2018/12/12/medline KW - Cr(Ⅵ) KW - Cu(Ⅱ) KW - cathode deactivation KW - heavy metal wastewater KW - microbial fuel cells SP - 4262 EP - 4270 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 38 IS - 10 N2 - The effect of copper (Ⅱ) wastewater addition on the treatment of chromium (Ⅵ) wastewater in dual-chamber microbial fuel cells (MFCs) was investigated for different Cr(Ⅵ)/Cu(Ⅱ) concentration ratios (2:1, 1:1, 1:2, 1:4) and external resistances (10, 500, 1000, 2000 Ω). The results demonstrated that the addition of Cu(Ⅱ) and Cr(Ⅵ) into the cathode chamber of MFCs could enhance the Cr(Ⅵ) removal efficiency. The Cr(Ⅵ) removal efficiency increased with the increase in the Cr(Ⅵ)/Cu(Ⅱ) concentration ratio. The Cu(Ⅱ) on the Cr(Ⅵ) removal efficiencies increased with the decrease of external resistance. The highest Cr(Ⅵ) removal efficiency achieved was 91.00% in MFC at the Cr(Ⅵ)/Cu(Ⅱ) concentration ratio of 1:4 and external resistance of 10 Ω, which was 132.57% higher than the MFC with Cr(Ⅵ) only (39.13%). The scanning electron microscopy with coupled energy dispersive spectroscopy (SEM-EDS) and X-ray photoelectron spectroscopy (XPS) analyses of the cathode electrode at the end of the experiments indicated that Cr(Ⅵ) reduced to non-conductive Cr(Ⅲ) deposits (Cr2O3) on the cathode electrode, resulting in cathode deactivation which blocked the electron transfer. However, the addition of Cu(Ⅱ) could improve the electrical conductivity of the cathode due to its conductive reduzates (copper and Cu2O) on the cathode which could reduce the cathode deactivation and subsequently enhance the Cr(Ⅵ) removal efficiency. SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/29965210/[Utilization_of_Copper__Ⅱ__Wastewater_for_Enhancing_the_Treatment_of_Chromium__Ⅵ__Wastewater_in_Microbial_Fuel_Cells]_ DB - PRIME DP - Unbound Medicine ER -