期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 38, 期 3, 页码 1342-1347出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.11.087
关键词
Anaerobic digestion; Bioelectrochemical enhancement; Hydrogen and methane production; Sewage sludge; Single-chamber membrane-free; microbial electrolysis cells
资金
- National Nature Science Foundation of China [51008295]
- State Key Laboratory of Environmental Aquatic Chemistry [11Y01ESPCR]
Batch tests were carried out to investigate the bioelectrochemical enhancement of hydrogen and methane production from the anaerobic digestion of sewage sludge in single-chamber membrane-free microbial electrolysis cells (MEC) and non-MECs. Hydrogen and methane were produced from the anaerobic digestion of sewage sludge in all reactors. Compared with controls, hydrogen production was enhanced 1.7-5.2-fold, and methane production 11.4-13.6-fold with Ti/Ru electrodes at applied voltages of 1.4 and 1.8 V, respectively. Most of hydrogen was produced in the first 5 days of digestion and most of methane was generated after 5 days. No oxygen was detected in the biogas and no hydrogen production was detected in the control test with water. The applied voltages can enhance the removal of suspended and volatile suspended solids, increase the transformation of soluble chemical oxygen demand, accelerate the conversion of volatile fatty acids and maintain an optimal pH range for methanogen growth. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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