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Effect of air-exposed biocathode on the performance of a Thauera-dominated membraneless single-chamber microbial fuel cell (SCMFC).
J Environ Sci (China). 2018 Apr; 66:216-224.JE

Abstract

To investigate the effect of air-exposed biocathode (AEB) on the performance of single-chamber microbial fuel cell (SCMFC), wastewater quality, bioelectrochemical characteristics and the electrode biofilms were researched. It was demonstrated that exposing the biocathode to air was beneficial to nitrogen removal and current generation. In Test 1 of 95% AEB, removal rates of ammonia, total nitrogen (TN) and chemical oxygen demand (COD) reached 99.34%±0.11%, 99.34%±0.10% and 90.79%±0.12%, respectively. The nitrogen removal loading rates were 36.38gN/m3/day. Meanwhile, current density and power density obtained at 0.7A/m3 and 104mW/m3 respectively. Further experiments on open-circuit (Test 2) and carbon source (Test 3) indicated that this high performance could be attributed to simultaneous biological nitrification/denitrification and aerobic denitrification, as well as bioelectrochemical denitrification. Results of community analysis demonstrated that both microbial community structures on the surface of the cathode and in the liquid of the chamber were different. The percentage of Thauera, identified as denitrifying bacteria, maintained at a high level of over 50% in water, but decreased gradually in the AEB. Moreover, the genus Nitrosomonas, Alishewanella, Arcobacter and Rheinheimera were significantly enriched in the AEB, which might contribute to both enhancement of nitrogen removal and electricity generation.

Authors+Show Affiliations

CAS Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; University of Chinese Academy of Sciences, Beijing 10049, China. Electronic address: yangnuan@cib.ac.cn.CAS Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China. Electronic address: zhangq@cib.ac.cn.CAS Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; University of Chinese Academy of Sciences, Beijing 10049, China.CAS Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; University of Chinese Academy of Sciences, Beijing 10049, China.CAS Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; University of Chinese Academy of Sciences, Beijing 10049, China.CAS Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China. Electronic address: lidp@cib.ac.cn.CAS Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

29628090

Citation

Yang, Nuan, et al. "Effect of Air-exposed Biocathode On the Performance of a Thauera-dominated Membraneless Single-chamber Microbial Fuel Cell (SCMFC)." Journal of Environmental Sciences (China), vol. 66, 2018, pp. 216-224.
Yang N, Zhan G, Wu T, et al. Effect of air-exposed biocathode on the performance of a Thauera-dominated membraneless single-chamber microbial fuel cell (SCMFC). J Environ Sci (China). 2018;66:216-224.
Yang, N., Zhan, G., Wu, T., Zhang, Y., Jiang, Q., Li, D., & Xiang, Y. (2018). Effect of air-exposed biocathode on the performance of a Thauera-dominated membraneless single-chamber microbial fuel cell (SCMFC). Journal of Environmental Sciences (China), 66, 216-224. https://doi.org/10.1016/j.jes.2017.05.013
Yang N, et al. Effect of Air-exposed Biocathode On the Performance of a Thauera-dominated Membraneless Single-chamber Microbial Fuel Cell (SCMFC). J Environ Sci (China). 2018;66:216-224. PubMed PMID: 29628090.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of air-exposed biocathode on the performance of a Thauera-dominated membraneless single-chamber microbial fuel cell (SCMFC). AU - Yang,Nuan, AU - Zhan,Guoqiang, AU - Wu,Tingting, AU - Zhang,Yanyan, AU - Jiang,Qinrui, AU - Li,Daping, AU - Xiang,Yuanying, Y1 - 2017/05/12/ PY - 2017/02/13/received PY - 2017/05/08/revised PY - 2017/05/09/accepted PY - 2018/4/10/entrez PY - 2018/4/10/pubmed PY - 2018/4/20/medline KW - Aerobic denitrification KW - Air-exposed biocathode (AEB) KW - Bioelectrochemical denitrification KW - Electricity generation KW - Single-chamber microbial fuel cell (SCMFC) KW - Thauera-dominated SP - 216 EP - 224 JF - Journal of environmental sciences (China) JO - J Environ Sci (China) VL - 66 N2 - To investigate the effect of air-exposed biocathode (AEB) on the performance of single-chamber microbial fuel cell (SCMFC), wastewater quality, bioelectrochemical characteristics and the electrode biofilms were researched. It was demonstrated that exposing the biocathode to air was beneficial to nitrogen removal and current generation. In Test 1 of 95% AEB, removal rates of ammonia, total nitrogen (TN) and chemical oxygen demand (COD) reached 99.34%±0.11%, 99.34%±0.10% and 90.79%±0.12%, respectively. The nitrogen removal loading rates were 36.38gN/m3/day. Meanwhile, current density and power density obtained at 0.7A/m3 and 104mW/m3 respectively. Further experiments on open-circuit (Test 2) and carbon source (Test 3) indicated that this high performance could be attributed to simultaneous biological nitrification/denitrification and aerobic denitrification, as well as bioelectrochemical denitrification. Results of community analysis demonstrated that both microbial community structures on the surface of the cathode and in the liquid of the chamber were different. The percentage of Thauera, identified as denitrifying bacteria, maintained at a high level of over 50% in water, but decreased gradually in the AEB. Moreover, the genus Nitrosomonas, Alishewanella, Arcobacter and Rheinheimera were significantly enriched in the AEB, which might contribute to both enhancement of nitrogen removal and electricity generation. SN - 1001-0742 UR - https://www.unboundmedicine.com/medline/citation/29628090/Effect_of_air_exposed_biocathode_on_the_performance_of_a_Thauera_dominated_membraneless_single_chamber_microbial_fuel_cell__SCMFC__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1001-0742(17)30429-1 DB - PRIME DP - Unbound Medicine ER -