| Literature DB >> 22004593 |
Tom H J A Sleutels1, Libertus Darus, Hubertus V M Hamelers, Cees J N Buisman.
Abstract
To create an efficient bioelectrochemical system, a high Coulombic efficiency is required. This efficiency is a direct measure for the competition between electrogens and methanogens when acetate is used as substrate. In this study the Coulombic efficiency in a microbial electrolysis cell was investigated. As a result of an increase in substrate concentration from 1 to 35 mM, the current density increased to 21.1A/m(2), while the Coulombic efficiency decreased to 52%. As a result of an increase in anode potential from -450 to -0.250 mV, the current density increased to 20.9A/m(2), while the Coulombic efficiency increased 21%. Knowledge about the substrate affinity and growth kinetics is crucial to control the Coulombic efficiency. Further research is required to optimize strategies to find a balance between the Coulombic efficiency, current density and removal rate of organic material.Entities:
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Year: 2011 PMID： 22004593 DOI： 10.1016/j.biortech.2011.09.078
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642