title: Effect of fatty oil dispersion on oil-containing wastewater treatment.
abstract: The performance of an immobilized continuous fluidized reactor for salad oil-containing model wastewater was examined at a high loading rate using polyurethane as a support, to be applied in fat- and oil-containing wastewater treatment, generated by daily activities in restaurant kitchens. At an organic loading rate higher than 0.6 kg/m3/day, there was a significant amount of white solid (WS), identified as a mixture of calcium di-stearate and di-palmitate, suggesting that saturated fatty acid degradation was limited at such a high loading rate, possibly due to its solubility in the wastewater. Increased oil dispersion by the addition of a surfactant ranging from 10 to 100 microm particle size could result in less than 30 mg/l oil concentration after the treatment at 5 kg/m3/day.
authors.affiliation: Center of Molecular Biosciences, University of Ryukyus, 1 Sembaru, Nishihara-cho, Okinawa 903-0213, Japan. tmatsui@comb.u-ryukyu.ac.jp
authors.forename: Toru
authors.initials: T
authors.lastname: Matsui
authors.forename: Akira
authors.initials: A
authors.lastname: Miura
authors.forename: Toshio
authors.initials: T
authors.lastname: Iiyama
authors.forename: Naoya
authors.initials: N
authors.lastname: Shinzato
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Matsuda
authors.forename: Keizo
authors.initials: K
authors.lastname: Furuhashi
mesh_terms: D005227:Fatty Acids / Q000737:chemistry*; D010938:Plant Oils / Q000032:analysis*; D012147:Restaurants; D013501:Surface-Active Agents / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D005227:Fatty Acids; D010938:Plant Oils; D013501:Surface-Active Agents