Process contribution evaluation for COD removal and energy production from molasses wastewater in a BioH2–BioCH4–MFC-integrated system
- 주제(키워드) Biological hydrogen (BioH2) , Biological methane (BioCH4) , Integrated system , Microbial fuel cell (MFC) , Molasses wastewater
- 등재 SCIE, SCOPUS
- 발행기관 Springer Verlag
- 발행년도 2016
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000139590
- 본문언어 영어
- Published As http://dx.doi.org/10.1007/s00449-016-1674-x
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
In this study, a three-stage-integrated process using the hydrogenic process (BioH2), methanogenic process (BioCH4), 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-H2 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 BioH2, BioCH4, 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 BioH2 at HRT of 1 day, up-flow anaerobic sludge blanket BioCH4 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. © 2016 Springer-Verlag Berlin Heidelberg
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