title: Comparative study on the bio-electrochemical denitrification equipped with a multi-electrode system.
abstract: Three biofilm-electrode reactors (BERs) with multiple cathodes were applied to investigate the effect of electrode configuration and flow direction on denitrification under laboratory-scale conditions. The distribution of nitrate, DO and pH varied among applied BERs, as a consequence of a different electrode position in the reactors, bringing about a difference in the performance. Flow-through configuration of electrodes with a downstream anode appears to be the most suitable configuration since nitrite did not accumulate in the effluent only in this experiment and the current-denitrification efficiency at low current densities was high. Thus, it is recommended for a low-loading operation.
authors.affiliation: Department of Civil and Environmental Engineering, Waseda University, 3-4-1 Okuba, Shinjuku, Tokyo 169-8555, Japan. prosnan@hotmail.com
authors.forename: M
authors.initials: M
authors.lastname: Prosnianský
authors.forename: T
authors.initials: T
authors.lastname: Watanabe
authors.forename: M
authors.initials: M
authors.lastname: Kuroda
mesh_terms: D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D006863:Hydrogen-Ion Concentration; D009573:Nitrites / Q000737:chemistry* / Q000378:metabolism; D018508:Water Purification / Q000379:methods*
chemical_list: D009573:Nitrites