期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 43, 期 16, 页码 7764-7772出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.02.170
关键词
Microbial electrolysis cell; Aluminum-air battery; Hydrogen; Coagulation
资金
- China Postdoctoral Science Foundation [2016M591534]
- Heilongjiang Postdoctoral Fund [LBH-Z16088]
- National Key R&D Program of China [2017YFC0401103]
- National Natural Science Fund of China [21673061]
- Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology [QA201609-01]
- International Cooperating Project China
- International Cooperating Project European Union [2014DFE90110]
Microbial electrolysis cells (MECs) are an efficient technology for generating hydrogen gas from organic matters, but an additional voltage is needed to overcome the thermodynamic barrier of the reaction. A combined system of MEC and the aluminum-air battery (Al-air battery) was designed for hydrogen generation, coagulant production and operated in an energy self-sufficient mode. The Al-air battery (28 mL) produced a voltage ranged from 0.58 V to 0.80 V, which powered an MEC (28 mL) to produce hydrogen. The hydrogen production rate reached 0.19 +/- 0.01 m(3) H-2/m(3)/d and 14.5 +/- 0.9 mmol H-2/g COD. The total COD removal rate was 85 +/- 1%, of which MEC obtained 75 +/- 1% COD removal and 10 +/- 1% COD removal was achieved by in-situ coagulating process. The microorganisms removal of MEC effluent was 97 +/- 2% through ex-situ coagulating process. These results showed that the Al-air battery-MEC system can be operated in energy self-sufficient mode and recovered energy from wastewater with high quality effluent. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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