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Characterization of the COD removal, electricity generation, and bacterial communities in microbial fuel cells treating molasses wastewater

Title
Characterization of the COD removal, electricity generation, and bacterial communities in microbial fuel cells treating molasses wastewater
Authors
Lee Y.-Y.Kim T.G.Cho K.-S.
Ewha Authors
조경숙김태관
SCOPUS Author ID
조경숙scopus
Issue Date
2016
Journal Title
Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
ISSN
1093-4529JCR Link
Citation
vol. 51, no. 13, pp. 1131 - 1138
Keywords
biodegradationbioreactorsmicrobial fuel cells (MFCs)molasses wastewaterwastewater treatment
Publisher
Taylor and Francis Inc.
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The chemical oxygen demand (COD) removal, electricity generation, and microbial communities were compared in 3 types of microbial fuel cells (MFCs) treating molasses wastewater. Single-chamber MFCs without and with a proton exchange membrane (PEM), and double-chamber MFC were constructed. A total of 10,000 mg L−1 COD of molasses wastewater was continuously fed. The COD removal, electricity generation, and microbial communities in the two types of single-chamber MFCs were similar, indicating that the PEM did not enhance the reactor performance. The COD removal in the single-chamber MFCs (89–90%) was higher than that in the double-chamber MFC (50%). However, electricity generation in the double-chamber MFC was higher than that in the single-chamber MFCs. The current density (80 mA m−2) and power density (17 mW m−2) in the double-chamber MFC were 1.4- and 2.2-times higher than those in the single-chamber MFCs, respectively. The bacterial community structures in single- and double-chamber MFCs were also distinguishable. The amount of Proteobacteria in the double-chamber MFC was 2–3 times higher than those in the single-chamber MFCs. For the archaeal community, Methanothrix (96.4%) was remarkably dominant in the single-chamber MFCs, but Methanobacterium (35.1%), Methanosarcina (28.3%), and Methanothrix (16.2%) were abundant in the double-chamber MFC. © 2016 Taylor & Francis Group, LLC.
DOI
10.1080/10934529.2016.1199926
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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