Effects of temperature and substrate concentration on biological hydrogen production from starch |
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| Authors: | Yohei Akutsu Yu-You Li Hideki Harada Han-Qing Yu |
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| Affiliation: | 1. Department of Civil and Environmental Engineering, Tohoku University, 6-6-06 Aoba, Sendai, Miyagi 980-8579, Japan;2. Department of Environmental and Municipal Engineering, Tianjin Institute of Urban Construction, Jinjinggonglu 26, Tianjin 300384, China;3. Department of Chemistry, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | This study investigates the effects of temperature and substrate concentration on biological hydrogen production from starch using mixed cultures. In this work, although hydrogen was successfully produced under the thermophilic condition, stable hydrogen production was not observed under the mesophilic condition. In the thermophilic reactor, the maximum hydrogen yield was 2.8 mol H2/mol glucose at 20 g/l-starch; however, hydrogen yield decreased drastically with the change of by-product distribution when substrate concentration was over 30 g/l-starch. A negative correlation was observed between the hydrogen yield and the total concentration of undissociated acids. |
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| Keywords: | Temperature Substrate concentration Biological hydrogen production Undissociated organic acid |
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