Characterization of the COD removal, electricity generation, and bacterial communities in microbial fuel cells treating molasses wastewater
- 주제(키워드) biodegradation , bioreactors , microbial fuel cells (MFCs) , molasses wastewater , wastewater treatment
- 등재 SCIE, SCOPUS
- 발행기관 Taylor and Francis Inc.
- 발행년도 2016
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000131454
- 본문언어 영어
- Published As http://dx.doi.org/10.1080/10934529.2016.1199926
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
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
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