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Characterization of the COD removal, electricity generation, and bacterial communities in microbial fuel cells treating molasses wastewater
- Characterization of the COD removal, electricity generation, and bacterial communities in microbial fuel cells treating molasses wastewater
- Lee Y.-Y.; Kim T.G.; Cho K.-S.
- Ewha Authors
- 조경숙; 김태관
- SCOPUS Author ID
- Issue Date
- Journal Title
- Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
- vol. 51, no. 13, pp. 1131 - 1138
- biodegradation; bioreactors; microbial fuel cells (MFCs); molasses wastewater; wastewater treatment
- Taylor and Francis Inc.
- SCI; SCIE; SCOPUS
- 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 10,000Â 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 (80Â mA m−2) and power density (17Â 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 2–3Â 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. Â© 2016 Taylor & Francis Group, LLC.
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