期刊
BIORESOURCE TECHNOLOGY
卷 173, 期 -, 页码 87-95出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.09.083
关键词
Microbial electrolysis cell; Wastewater; Energy; Hydrogen; Durability
资金
- Engineering and Physical Sciences Research Council United Kingdom [EP/P504244/1]
- Northumbrian Water Limited
- Engineering and Physical Sciences Research Council [EP/F008473/1, 1246471] Funding Source: researchfish
- EPSRC [EP/F008473/1] Funding Source: UKRI
A 100-L microbial electrolysis cell (MEC) was operated for a 12-month period fed on raw domestic waste-water at temperatures ranging from 1 degrees C to 22 degrees C, producing an average of 0.6 L/day of hydrogen. Gas production was continuous though decreased with time. An average 48.7% of the electrical energy input was recovered, with a Coulombic efficiency of 41.2%. COD removal was inconsistent and below the standards required. Limitations to the cell design, in particular the poor pumping system and large overpotential account for many of the problems. However these are surmountable hurdles that can be addressed in future cycles of pilot scale research. This research has established that the biological process of an MEC will to work at low temperatures with real wastewater for prolonged periods. Testing and demonstrating the robustness and durability of bioelectrochemical systems far beyond that in any previous study, the prospects for developing MEC at full scale are enhanced. (C) 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).
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