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Effects of nitrate and sulfate on the performance and bacterial community structure of membrane-less single-chamber air-cathode microbial fuel cells.

Abstract

Membrane-less, single-chamber, air-cathode, microbial fuel cells (ML-SC MFCs) have attracted attention as being suitable for wastewater treatment. In this study, the effects of nitrate and sulfate on the performance of ML-SC MFCs and their bacterial structures were evaluated. The maximum power density increased after nitrate addition from 8.6 mW·m-2 to 14.0 mW·m-2, while it decreased after sulfate addition from 11.5 mW·m-2 to 7.7 mW·m-2. The chemical oxygen demand removal efficiencies remained at more than 90% regardless of the nitrate or sulfate additions. The nitrate was removed completely (93.0%) in the ML-SC MFC, while the sulfate removal efficiency was relatively low (17.6%). Clostridium (23.1%), Petrimonas (20.0%), and unclassified Rhodocyclaceae (6.2%) were dominant on the anode before the addition of nitrate or sulfate. After the addition of nitrate, Clostridium was still the most dominant on the anode (23.6%), but Petrimonas significantly decreased (6.0%) and unclassified Rhodocyclaceae increased (17.1%). After the addition of sulfate, the amount of Clostridium almost doubled in the composition on the anode (43.2%), while Petrimonas decreased (5.5%). The bacterial community on the cathode was similar to that on the anode after the addition of nitrate. However, Desulfovibrio was remarkably dominant on the cathode (32.9%) after the addition of sulfate. These results promote a deeper understanding of the effects of nitrate or sulfate on the ML-SC MFCs' performance and their bacterial community.

Authors+Show Affiliations

a Department of Environmental Science and Engineering , Ewha Womans University , Seoul , Republic of Korea.a Department of Environmental Science and Engineering , Ewha Womans University , Seoul , Republic of Korea.a Department of Environmental Science and Engineering , Ewha Womans University , Seoul , Republic of Korea.a Department of Environmental Science and Engineering , Ewha Womans University , Seoul , Republic of Korea.a Department of Environmental Science and Engineering , Ewha Womans University , Seoul , Republic of Korea.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29035628

Citation

Seo, Yoonjoo, et al. "Effects of Nitrate and Sulfate On the Performance and Bacterial Community Structure of Membrane-less Single-chamber Air-cathode Microbial Fuel Cells." Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, vol. 53, no. 1, 2018, pp. 13-24.
Seo Y, Kang H, Chang S, et al. Effects of nitrate and sulfate on the performance and bacterial community structure of membrane-less single-chamber air-cathode microbial fuel cells. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2018;53(1):13-24.
Seo, Y., Kang, H., Chang, S., Lee, Y. Y., & Cho, K. S. (2018). Effects of nitrate and sulfate on the performance and bacterial community structure of membrane-less single-chamber air-cathode microbial fuel cells. Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering, 53(1), 13-24. https://doi.org/10.1080/10934529.2017.1366242
Seo Y, et al. Effects of Nitrate and Sulfate On the Performance and Bacterial Community Structure of Membrane-less Single-chamber Air-cathode Microbial Fuel Cells. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2018 Jan 2;53(1):13-24. PubMed PMID: 29035628.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of nitrate and sulfate on the performance and bacterial community structure of membrane-less single-chamber air-cathode microbial fuel cells. AU - Seo,Yoonjoo, AU - Kang,Hyemin, AU - Chang,Sumin, AU - Lee,Yun-Yeong, AU - Cho,Kyung-Suk, Y1 - 2017/10/16/ PY - 2017/10/17/pubmed PY - 2018/4/17/medline PY - 2017/10/17/entrez KW - Microbial fuel cells (MFCs) KW - bacterial community KW - nitrate removal KW - sulfate removal KW - wastewater treatment SP - 13 EP - 24 JF - Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering JO - J Environ Sci Health A Tox Hazard Subst Environ Eng VL - 53 IS - 1 N2 - Membrane-less, single-chamber, air-cathode, microbial fuel cells (ML-SC MFCs) have attracted attention as being suitable for wastewater treatment. In this study, the effects of nitrate and sulfate on the performance of ML-SC MFCs and their bacterial structures were evaluated. The maximum power density increased after nitrate addition from 8.6 mW·m-2 to 14.0 mW·m-2, while it decreased after sulfate addition from 11.5 mW·m-2 to 7.7 mW·m-2. The chemical oxygen demand removal efficiencies remained at more than 90% regardless of the nitrate or sulfate additions. The nitrate was removed completely (93.0%) in the ML-SC MFC, while the sulfate removal efficiency was relatively low (17.6%). Clostridium (23.1%), Petrimonas (20.0%), and unclassified Rhodocyclaceae (6.2%) were dominant on the anode before the addition of nitrate or sulfate. After the addition of nitrate, Clostridium was still the most dominant on the anode (23.6%), but Petrimonas significantly decreased (6.0%) and unclassified Rhodocyclaceae increased (17.1%). After the addition of sulfate, the amount of Clostridium almost doubled in the composition on the anode (43.2%), while Petrimonas decreased (5.5%). The bacterial community on the cathode was similar to that on the anode after the addition of nitrate. However, Desulfovibrio was remarkably dominant on the cathode (32.9%) after the addition of sulfate. These results promote a deeper understanding of the effects of nitrate or sulfate on the ML-SC MFCs' performance and their bacterial community. SN - 1532-4117 UR - https://www.unboundmedicine.com/medline/citation/29035628/Effects_of_nitrate_and_sulfate_on_the_performance_and_bacterial_community_structure_of_membrane_less_single_chamber_air_cathode_microbial_fuel_cells_ L2 - http://www.tandfonline.com/doi/full/10.1080/10934529.2017.1366242 DB - PRIME DP - Unbound Medicine ER -