期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 38, 期 32, 页码 13907-13913出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2013.08.072
关键词
Biohydrogen; Biomethane; Anaerobic process; Food waste
资金
- Hong Kong and China Gas Company Limited
Biohydrogen generated from the anaerobic digestion of a synthetic food waste with constant composition and a real food waste collected in Hong Kong were studied. This study aims at using a monoculture to increase biohydrogen production and determining optimum conditions for maximum biohydrogen production. Among the nine bacteria screened for biohydrogen production, Escherichia cloacae and Enterobacter aerogenes produced the largest amount of biohydrogen from the anaerobic digestion of synthetic food waste. The optimum anaerobic digestion conditions were determined: initial pH of 7, a water to solids ratio of 5 (w/w), a mesophilic temperature (37 +/- 1 degrees C), and in the presence of 40 mg/L FeSO4 center dot 7H(2)O. Anaerobic digestion at the optimum operating conditions using collected food waste with E. cloacae as the bacterial source was also performed. By adjusting the pH in the range of 5-6, a specific biohydrogen production of 155.2 mL/g of volatile solids (VS) in food waste was obtained. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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