期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 39, 期 25, 页码 13543-13549出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2014.01.147
关键词
Fermentative hydrogen production; Gamma irradiation; Pretreatment; Hydrogen-producing bacteria
资金
- Program for Changjiang Scholars and Innovative Research Team in University [IRT-13026]
- National High Technology Research and Development Program [2009AA063905]
- National Natural Science Foundation of China [51338005]
Gamma irradiation was used as a pretreatment method for enriching hydrogen-producing bacteria from digested sludge. The experimental results demonstrated that 5.0 kGy was optimal dose among the different doses (0.5-10 kGy) applied in this study. The maximum cumulative hydrogen production, hydrogen yield, hydrogen production rate and substrate degradation efficiency of the sludge irradiated at such dose were 529.4 mL, 267.7 mL/g glucose, 37.25 mL/h and 98.9%, respectively when the fermentation conditions were as follows: at 36 degrees C, initial pH 7.0 and 10 g/L glucose as substrate. In comparison with the conventional pretreatment methods, such as heat-shock, acid, base, aeration and chloroform, gamma irradiation was more powerful pretreatment method for enriching hydrogen-producing bacteria. The effect of Gamma irradiation on the microbial community structure of the pretreated sludge needs further study. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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