View : 34 Download: 0
Effects of nitrate and sulfate on the performance and bacterial community structure of membrane-less single-chamber air-cathode microbial fuel cells
- Effects of nitrate and sulfate on the performance and bacterial community structure of membrane-less single-chamber air-cathode microbial fuel cells
- Seo Y.; Kang H.; Chang S.; Lee Y.-Y.; Cho K.-S.
- Ewha Authors
- SCOPUS Author ID
- Issue Date
- Journal Title
- Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
- pp. 1 - 12
- bacterial community; Microbial fuel cells (MFCs); nitrate removal; sulfate removal; wastewater treatment
- Taylor and Francis Inc.
- SCI; SCIE; SCOPUS
- 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. © 2017 Taylor & Francis Group, LLC
- Appears in Collections:
- 엘텍공과대학 > 환경공학전공 > Journal papers
- Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.