Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 39, Issue 25, Pages 13498-13504Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2014.02.086
Keywords
Hydrogen production; Anaerobic baffled reactor; Bio-electrochemical system; Methanogenesis
Categories
Funding
- Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-EW-402-02]
- Ningbo Natural Science Foundation [2013A610177, 2013A610173]
- Science and Technology Planning Project of Xiamen [3502Z20120012]
- key project of Fujian provincial Science & Technology Program [2012Y0069]
- National Natural Science Foundation of China [21276248, 50808152]
- National Key Technology Support Program [2012BAC25B04]
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In this study, a new process was proposed to enhance the stability and efficiency of an anaerobic baffled reactor (ABR). The process was examined in a four equal compartments ABR with total volume of 3.46 L. The first compartment was operated for fermentative hydrogen production and the last three compartments were used as continuous singer chamber microbial electrolysis cells (MECs) for methanogenesis. The system was operated at 35 1 C and hydraulic retention time (HRT) of 24 h with influent chemical oxygen demand (COD) concentration of 3500 mg/L-4000 mg/L. The results indicated that the proportion of hydrogen in the first compartment was 20.7% and proportions of methane in the last three compartments were 98.0%, 93.6% and 70.1%, respectively. A total of 98.0% of COD removal rate was achieved as well. Hence, this new system has following advantages: hydrogen production with cleaner effluent, high COD removal rate, and net methane production for practical use. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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