Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 66, Issue -, Pages 38-41Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2016.02.017
Keywords
Microbial anode; Carbon felt; Biofilm structure; Porous electrode; Microbial electrochemical technology
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Funding
- French Agence Nationale de la Recherche (ANR) [ANR-10-BTBR-02]
- Comite des Investissements d'Avenir
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Two-dimensional carbon cloth and three-dimensional carbon felt were compared for their capacity to form bioanodes for food waste treatment. Wastewater was used as the dilution medium instead of a synthetic solution to be close to industrial conditions. In both cases, microbial cells were mainly wrapped around the fibers of the electrodes. The biofilms were around 80-120 mu m thick with a 39.3% microbial volume ratio on carbon cloths. On carbon felt, the biofilms showed a lower microbial volume ratio of 16.3% on the upper layers but with a penetration depth of 200-800 mu m. The biofilm patterns were different but they resulted in similar current density, around 3.5 A/m(2). When chemically rich media have to be implemented, 2D cloth offers a worthwhile solution that can equal 3D porous materials. (C) 2016 Elsevier B.V. All rights reserved.
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