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Bioelectrochemical reactor with double bioanode, method for anodic regeneration and use of the reactor for microbial electrosynthesis. Réacteur électrochimique a double bio-anode, procédé de régénération anodique et utilisation du réacteur a l'électrosynthese microbienne.
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The invention relates to a bioelectrochemical reactor (1) which comprises: - an anode chamber (11) having at least two bioanodes (12, 13), and an anodic electrolyte (14) comprising anodic electroactive microorganisms, - a cathode chamber (21) comprising at least one biocathode (22), and a cathodic electrolyte (24) comprising cathodic electroactive microorganisms, - the anode chamber (11) being separated from the cathode chamber (21) by, running from the anode chamber to the cathode chamber, a cation exchange membrane (31) and an anion exchange membrane (32), said cation and anion exchange membranes being separated from each other by an inter-membrane chamber (30), and - means for applying a potential difference between the interconnected bioanodes and the biocathode/biocathodes, the bioanodes and biocathode/biocathodes having active surfaces such that the total active surface of the biocathode/biocathodes (22) is greater than the total active surface of the two bioanodes (12, 13). The invention also relates to a method for regenerating the activity of the bioanodes of the reactor and to the use of said reactor for the electrosynthesis of organic acids and/or alcohols from organic waste.
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