title: Evaluation of microbial fuel cells for electricity generation from oil-contaminated wastewater.
abstract: Large quantities of oils and fats are discharged into wastewater from food industries. We evaluated the possibility of using microbial fuel cells (MFCs) for the generation of electricity from food-industry wastewater containing vegetable oils. Single-chamber MFCs were supplied with artificial wastewater containing soybean oil, and oil removal and electric output were examined under several different conditions. We found that MFC performance could be improved by supplementing wastewater with an emulsifier, inoculating MFCs with oil-contaminated soil, and coating the graphite-felt anodes with carbon nanotubes, resulting in a power output of more than 2 W m-2(based on the projected area of the anode). Sequencing of polymerase chain reaction (PCR)-amplified 16S rRNA gene fragments detected abundant amount of Burkholderiales bacteria (known to include oil degraders) in the oil-contaminated soil and anode biofilm, whereas those affiliated with the genus Geobacter were only detected in the anode biofilm. These results suggest that MFCs can be used for energy recovery from food industry wastewater containing vegetable oils.
authors.affiliation: Miyoshi Oil and Fat Co., Ltd., 4-66-1 Horikiri, Katsushika-ku, Tokyo 124-8510, Japan. Electronic address: hamamotok@so.miyoshi-yushi.co.jp.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Hamamoto
authors.affiliation: School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.
authors.forename: Morio
authors.initials: M
authors.lastname: Miyahara
authors.affiliation: School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Kouzuma
authors.affiliation: Miyoshi Oil and Fat Co., Ltd., 4-66-1 Horikiri, Katsushika-ku, Tokyo 124-8510, Japan.
authors.forename: Akiteru
authors.initials: A
authors.lastname: Matsumoto
authors.affiliation: Miyoshi Oil and Fat Co., Ltd., 4-66-1 Horikiri, Katsushika-ku, Tokyo 124-8510, Japan.
authors.forename: Minoru
authors.initials: M
authors.lastname: Yoda
authors.affiliation: Miyoshi Oil and Fat Co., Ltd., 4-66-1 Horikiri, Katsushika-ku, Tokyo 124-8510, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Ishiguro
authors.affiliation: School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan.
authors.forename: Kazuya
authors.initials: K
authors.lastname: Watanabe
mesh_terms: D001674:Bioelectric Energy Sources / Q000382:microbiology*; D018441:Biofilms; D004560:Electricity; D052918:Environmental Restoration and Remediation / Q000379:methods*; D019649:Food Industry / Q000379:methods*; D045302:Geobacter / Q000254:growth & development / Q000502:physiology; D037742:Nanotubes, Carbon; D010938:Plant Oils / Q000737:chemistry / Q000494:pharmacology*; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D062065:Wastewater / Q000737:chemistry / Q000382:microbiology*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000494:pharmacology
chemical_list: D037742:Nanotubes, Carbon; D010938:Plant Oils; D012336:RNA, Ribosomal, 16S; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Air cathode; Anode coating; Food industry; Phylogenetic analyses; Vegetable oil