Journal
BIORESOURCE TECHNOLOGY
Volume 146, Issue -, Pages 63-69Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.07.020
Keywords
Microbial electrolysis cell (MEC); Hydrogen production; Domestic wastewater
Funding
- Spanish Ministry of Science and Innovation [ENE 20009-10395, ENE 2012-33027]
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The influence of applied voltage and hydraulic retention time on the performance of a semi-pilot modular tubular wastewater-fed microbial electrolysis cell (MEC) with high scalability was investigated. A chemical oxygen demand (COD) removal efficiency of 80%, as well as an energy consumption of 0.3-1.1 Wh g-COD-1 removed, were achieved. Hydrogen production was limited by the reduced amounts of organic matter fed into the reactor, the poor performance of the cathode, and COD consuming by non electrogenic microorganisms. The presence of COD consuming microorganism that do not contribute to electrogenic metabolism severely affected the MEC performance. (c) 2013 Elsevier Ltd. All rights reserved.
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