title: Efficiency of rice bran for removal of organochlorine compounds and benzene from industrial wastewater.
abstract: Rice bran was found to effectively adsorb several organic compounds, such as dichloromethane, chloroform, carbon tetrachloride, trichloroethylene, tetrachloroethylene, and benzene. Equilibrium adsorption isotherms conformed to the Freundlich type (log-log linear). The adsorption of dichloromethane and chloroform by rice bran was observed over the range of pH 1-11. Therefore, rice bran is applicable for treatment of wastewater over a wide pH range. Dichloromethane was successfully removed from water samples with an average removal efficiency of 70% after 60 min when rice bran was added to water samples containing from 0.006 to 100 mg/L dichloromethane. The removal of these organochlorine compounds and benzene by rice bran was attributed to the uptake by intracellular particles called spherosomes. Here, we report the results of a fundamental study of the efficiency of rice bran for removal of organochlorine compounds and benzene using a batch system on the laboratory scale, and describe elucidation of the mechanism of removal of these compounds by rice bran.
authors: Kobe Pharmaceutical University, Motoyamakitamachi 4-chome, Higashinada-ku, Kobe, 658-8558, Japan.
authors: A
authors: A
authors: Adachi
authors: C
authors: C
authors: Ikeda
authors: S
authors: S
authors: Takagi
authors: N
authors: N
authors: Fukao
authors: E
authors: E
authors: Yoshie
authors: T
authors: T
authors: Okano
mesh_terms: D000327:Adsorption; D001554:Benzene / Q000302:isolation & purification*; D004043:Dietary Fiber; D006843:Hydrocarbons, Chlorinated / Q000737:chemistry / Q000302:isolation & purification*; D007220:Industrial Waste; D008752:Methylene Chloride / Q000737:chemistry / Q000302:isolation & purification; D012275:Oryza; D012722:Sewage; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D004043:Dietary Fiber; D006843:Hydrocarbons, Chlorinated; D007220:Industrial Waste; D012722:Sewage; D014874:Water Pollutants, Chemical; D008752:Methylene Chloride; D001554:Benzene