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The enhancement of iron fuel cell on bio-cathode denitrification and its mechanism as well as the microbial community analysis of bio-cathode.
Bioresour Technol. 2019 Feb; 274:1-8.BT

Abstract

To address the issue of insufficient electrons during denitrification, an iron fuel cell (IFC) bioreactor using iron as abiotic anode was designed. The nitrogen removal efficiency (NRE) of IFC (2.54 ± 0.016%) was significantly lower than microbial fuel cell (MFC) (32.58 ± 0.033%) with same bio-cathode under autotrophic conditions, which was due to the permeation of acetate on proton exchange membrane (PEM) affected the process of enriching autotrophic denitrifying bacteria by MFC. When used in heterotrophic conditions, the NRE of the closed-circuits of IFC was 29.04%, 10.53%, 8.33% higher than open-circuits, respectively, when the COD/nitrogen (C/N) ratios was 1, 2 and 3. The enhancement of IFC was the iron anode could convert a portion of nitrate to nitrite according to the abiotic cathode control experiments. The mainly functional bacteria of bio-cathode was Paracoccus (53.04%). In conclusion, the IFC could be a theoretical model for using inorganic electron donor during denitrification.

Authors+Show Affiliations

Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China; University of Chinese Academy of Sciences, Beijing 100049, China.Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China; University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing 100085, China.Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China; University of Chinese Academy of Sciences, Beijing 100049, China.Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China.Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: lidp@cib.ac.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30496969

Citation

Li, Zehua, et al. "The Enhancement of Iron Fuel Cell On Bio-cathode Denitrification and Its Mechanism as Well as the Microbial Community Analysis of Bio-cathode." Bioresource Technology, vol. 274, 2019, pp. 1-8.
Li Z, Zhang Q, Jiang Q, et al. The enhancement of iron fuel cell on bio-cathode denitrification and its mechanism as well as the microbial community analysis of bio-cathode. Bioresour Technol. 2019;274:1-8.
Li, Z., Zhang, Q., Jiang, Q., Zhan, G., & Li, D. (2019). The enhancement of iron fuel cell on bio-cathode denitrification and its mechanism as well as the microbial community analysis of bio-cathode. Bioresource Technology, 274, 1-8. https://doi.org/10.1016/j.biortech.2018.11.070
Li Z, et al. The Enhancement of Iron Fuel Cell On Bio-cathode Denitrification and Its Mechanism as Well as the Microbial Community Analysis of Bio-cathode. Bioresour Technol. 2019;274:1-8. PubMed PMID: 30496969.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The enhancement of iron fuel cell on bio-cathode denitrification and its mechanism as well as the microbial community analysis of bio-cathode. AU - Li,Zehua, AU - Zhang,Qinghua, AU - Jiang,Qinrui, AU - Zhan,Guoqiang, AU - Li,Daping, Y1 - 2018/11/20/ PY - 2018/10/15/received PY - 2018/11/16/revised PY - 2018/11/18/accepted PY - 2018/11/30/pubmed PY - 2019/7/25/medline PY - 2018/11/30/entrez KW - Denitrification KW - Microbial community KW - Microbial fuel cells SP - 1 EP - 8 JF - Bioresource technology JO - Bioresour Technol VL - 274 N2 - To address the issue of insufficient electrons during denitrification, an iron fuel cell (IFC) bioreactor using iron as abiotic anode was designed. The nitrogen removal efficiency (NRE) of IFC (2.54 ± 0.016%) was significantly lower than microbial fuel cell (MFC) (32.58 ± 0.033%) with same bio-cathode under autotrophic conditions, which was due to the permeation of acetate on proton exchange membrane (PEM) affected the process of enriching autotrophic denitrifying bacteria by MFC. When used in heterotrophic conditions, the NRE of the closed-circuits of IFC was 29.04%, 10.53%, 8.33% higher than open-circuits, respectively, when the COD/nitrogen (C/N) ratios was 1, 2 and 3. The enhancement of IFC was the iron anode could convert a portion of nitrate to nitrite according to the abiotic cathode control experiments. The mainly functional bacteria of bio-cathode was Paracoccus (53.04%). In conclusion, the IFC could be a theoretical model for using inorganic electron donor during denitrification. SN - 1873-2976 UR - https://www.unboundmedicine.com/medline/citation/30496969/The_enhancement_of_iron_fuel_cell_on_bio_cathode_denitrification_and_its_mechanism_as_well_as_the_microbial_community_analysis_of_bio_cathode_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(18)31603-1 DB - PRIME DP - Unbound Medicine ER -