title: Evaluation of potato-processing wastewater treatment in a microbial fuel cell.
abstract: Wastewaters from potato-processing industries have been traditionally treated by a sequence of steps that include the production of methane as the anaerobic one. This work explores the feasibility of replacing or supplementing methanogenesis with the emerging technology of microbial fuel cells (MFCs). Electricity producing biofilms have been enriched from a real anaerobic sludge, and the conversion of potato-processing wastewater into electricity has been studied. When tested as a single treatment step, MFCs were able to process the wastewater with high COD removal but with low energetic conversion efficiency. On the other hand, as a complimentary step for methanogenesis, they improved conversion efficiency and significantly reduced the organic matter load of the final effluent. These results point at the combination of the energetic yield of methanogenesis and the improved COD removal of the electricity producing treatment as the implementation choice.
authors.affiliation: Grupo de Ingeniería Bioquímica, Facultad de Ingeniería, UNMdP, Juan B. Justo 4302, Mar del Plata, Argentina. durruty@fi.mdp.edu.ar
authors.forename: Ignacio
authors.initials: I
authors.lastname: Durruty
authors.forename: Pablo Sebastián
authors.initials: PS
authors.lastname: Bonanni
authors.forename: Jorge Froilan
authors.initials: JF
authors.lastname: González
authors.forename: Juan Pablo
authors.initials: JP
authors.lastname: Busalmen
mesh_terms: D000693:Anaerobiosis; D001674:Bioelectric Energy Sources; D018441:Biofilms; D019149:Bioreactors; D001709:Biotechnology / Q000379:methods; D004560:Electricity; D008697:Methane / Q000737:chemistry; D008855:Microscopy, Electron, Scanning / Q000379:methods; D012722:Sewage; D011198:Solanum tuberosum; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*
chemical_list: D012722:Sewage; D014874:Water Pollutants, Chemical; D008697:Methane