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Updated: May 9, 2026
Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
Performance of a semi-pilot tubular microbial electrolysis cell (MEC) under several hydraulic retention times and
L Gil-Carrera1, A Escapa1, B Carracedo1
1Chemical and Environmental-Bioprocess Engineering Department, Natural Resources Institute (IRENA), University of Leon, Avda. de Portugal 41, Leon 24009, Spain.
Abstract:
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.
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