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Process contribution evaluation for COD removal and energy production from molasses wastewater in a BioH(2)-BioCH(4)-MFC-integrated system

Title
Process contribution evaluation for COD removal and energy production from molasses wastewater in a BioH(2)-BioCH(4)-MFC-integrated system
Authors
Yun, JeongheeLee, Yun-YeongChoi, Hyung JooCho, Kyung-Suk
Ewha Authors
조경숙
SCOPUS Author ID
조경숙scopus
Issue Date
2017
Journal Title
BIOPROCESS AND BIOSYSTEMS ENGINEERING
ISSN
1615-7591JCR Link1615-7605JCR Link
Citation
vol. 40, no. 1, pp. 55 - 62
Keywords
Biological hydrogen (BioH(2))Biological methane (BioCH(4))Microbial fuel cell (MFC)Integrated systemMolasses wastewater
Publisher
SPRINGER
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
In this study, a three-stage-integrated process using the hydrogenic process (BioH(2)), methanogenic process (BioCH(4)), and a microbial fuel cell (MFC) was operated using molasses wastewater. The contribution of individual processes to chemical oxygen demand (COD) removal and energy production was evaluated. The three-stage integration system was operated at molasses of 20 g-COD L-1, and each process achieved hydrogen production rate of 1.1 +/- 0.24 L-H-2 L-1 day(-1), methane production rate of 311 +/- 18.94 mL-CH4 L-1 day(-1), and production rate per electrode surface area of 10.8 +/- 1.4 g m(-2) day(-1). The three-stage integration system generated energy production of 32.32 kJ g-COD-1 and achieved COD removal of 98 %. The contribution of BioH(2), BioCH(4), and the MFC reactor was 20.8, 72.2, and, 7.0 % of the total COD removal, and 18.7, 81.2, and 0.16 % of the total energy production, respectively. The continuous stirred-tank reactor BioH(2) at HRT of 1 day, up-flow anaerobic sludge blanket BioCH(4) at HRT of 2 days, and MFC reactor at HRT of 3 days were decided in 1:2:3 ratios of working volume under hydraulic retention time consideration. This integration system can be applied to various configurations depending on target wastewater inputs, and it is expected to enhance energy recovery and reduce environmental impact of the final effluent.
DOI
10.1007/s00449-016-1674-x
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엘텍공과대학 > 환경공학전공 > Journal papers
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