title: Forming microbial anodes with acetate addition decreases their capability to treat raw paper mill effluent.
abstract: Microbial anodes were formed under polarization at -0.3 V/SCE on graphite plates in effluents from a pulp and paper mill. The bioanodes formed with the addition of acetate led to the highest current densities (up to 6A/m(2)) but were then unable to oxidize the raw effluent efficiently (0.5A/m(2)). In contrast, the bioanodes formed without acetate addition were fully able to oxidize the organic matter contained in the effluent, giving up to 4.5A/m(2) in continuous mode. Bacterial communities showed less bacterial diversity for the acetate-fed bioanodes compared to those formed in raw effluents. Deltaproteobacteria were the most abundant taxonomic group, with a high diversity for bioanodes formed without acetate addition but with almost 100% Desulfuromonas for the acetate-fed bioanodes. The addition of acetate to form the microbial anodes induced microbial selection, which was detrimental to the treatment of the raw effluent.
authors.affiliation: Centre Technique du Papier, BP 251, 38044 Grenoble Cedex 9, France; Laboratoire de Génie Chimique, CNRS-Université de Toulouse, 31432 Toulouse, France.
authors.forename: Stéphanie F
authors.initials: SF
authors.lastname: Ketep
authors.affiliation: Laboratoire de Génie Chimique, CNRS-Université de Toulouse, 31432 Toulouse, France. Electronic address: alain.bergel@ensiacet.fr.
authors.forename: Alain
authors.initials: A
authors.lastname: Bergel
authors.affiliation: CEA, DSV, IBEB, SBVME, Laboratoire d'Ecologie Microbienne de la Rhizosphère et d'Environnements Extrêmes (LEMiRE), Saint-Paul-lez-Durance, France; CNRS, UMR 7265, FR CNRS 3098 ECCOREV, Saint-Paul-lez-Durance, France; Aix-Marseille Université, Saint-Paul-lez-Durance, France.
authors.forename: Marie
authors.initials: M
authors.lastname: Bertrand
authors.affiliation: CEA, DSV, IBEB, SBVME, Laboratoire d'Ecologie Microbienne de la Rhizosphère et d'Environnements Extrêmes (LEMiRE), Saint-Paul-lez-Durance, France; CNRS, UMR 7265, FR CNRS 3098 ECCOREV, Saint-Paul-lez-Durance, France; Aix-Marseille Université, Saint-Paul-lez-Durance, France.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Barakat
authors.affiliation: CEA, DSV, IBEB, SBVME, Laboratoire d'Ecologie Microbienne de la Rhizosphère et d'Environnements Extrêmes (LEMiRE), Saint-Paul-lez-Durance, France; CNRS, UMR 7265, FR CNRS 3098 ECCOREV, Saint-Paul-lez-Durance, France; Aix-Marseille Université, Saint-Paul-lez-Durance, France.
authors.forename: Wafa
authors.initials: W
authors.lastname: Achouak
authors.affiliation: Centre Technique du Papier, BP 251, 38044 Grenoble Cedex 9, France.
authors.forename: Eric
authors.initials: E
authors.lastname: Fourest
mesh_terms: D000085:Acetates / Q000494:pharmacology*; D001419:Bacteria / Q000145:classification / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D044822:Biodiversity; D001674:Bioelectric Energy Sources / Q000382:microbiology*; D057919:Biological Oxygen Demand Analysis; D004560:Electricity; D004566:Electrodes; D007220:Industrial Waste / Q000032:analysis*; D010209:Paper; D013997:Time Factors; D014865:Waste Disposal, Fluid; D018508:Water Purification / Q000379:methods*
chemical_list: D000085:Acetates; D007220:Industrial Waste
keywords: Bioanode; Desulfuromonas; Microbial anode; Microbial fuel cell; Paper industry effluent