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J.Health Sci., 47(1), 54-59, 2001
Removal Efficiency of Defatted Seed for Organochlorine Compounds
Atsuko Adachi,* Tomoko Komiyama, Tomoko Tanaka, Maki Nakatani, Ryuske Muguruma, and Toshio Okano
Kobe Pharmaceutical University, Higashinada-ku, Kobe 658-8558, Japan
Defatted seeds effectively adsorbed organochlorine compounds such as chloroform, dichloromethane and trichloroethylene. The amounts of these compounds adsorbed was plotted against the equilibrium concentration of substances in solution on a logarithmic scale. A linear relationship was obtained, indicating that the adsorption reactions were Freundlich type. The adsorption of these compounds by defatted seed was observed over the range of pH 1-11. Chloroform was successfully removed from tap water with an average removal efficiency of 70% after 60 min when rapeseed was added to tap water that contained 0.0073 mg/l chloroform. The removal of these organochlorine compounds by defatted seed was attributed to the uptake by intracellular particles called spherosomes.
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