title: Effect of metal ions on decomposition of chlorinated organic substances by ozonation in acetic acid.
abstract: The objective of this study is to find metal ions that enhance the ozone decomposition of chlorinated organic substances in acetic acid. Although the pseudo-first order degradation rate constant for 2,4-DCP by ozone in acetic acid in addition of Ca2+, Mg2+, Al3+ and Fe2+ were almost the same as that with no metal ion, the degradation rate in addition of Mn2+ and Fe3+ were 2.4 and 4.5 times as high as that with no metal ion, respectively. The presence of Fe3+ enhanced the degradation of 2,4-DCP by ozone in acetic acid because Fe3+-phenolate complex which have high reactivity with ozone was produced by the reaction between 2,4-DCP and Fe3+ in acetic acid.
authors.affiliation: Fukuoka University Institute for Recycling and Environmental Control System, 10 Koyocho, Wakamatsu-ku, Kitakyushu City, Fukuoka 808-0002, Japan. okawa@fukuoka-u.ac.jp
authors.forename: Kiyokazu
authors.initials: K
authors.lastname: Okawa
authors.forename: Tsung-Yueh
authors.initials: TY
authors.lastname: Tsai
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Nakano
authors.forename: Wataru
authors.initials: W
authors.lastname: Nishijima
authors.forename: Mitsumasa
authors.initials: M
authors.lastname: Okada
mesh_terms: D019342:Acetic Acid / Q000737:chemistry*; D001673:Biodegradation, Environmental; D002412:Cations; D002733:Chlorophenols / Q000378:metabolism; D004202:Disinfectants / Q000737:chemistry / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D006843:Hydrocarbons, Chlorinated / Q000378:metabolism*; D008670:Metals / Q000494:pharmacology*; D010126:Ozone / Q000737:chemistry*; D013997:Time Factors; D014241:Trichloroethylene / Q000378:metabolism; D018508:Water Purification / Q000379:methods*
chemical_list: D002412:Cations; D002733:Chlorophenols; D004202:Disinfectants; D006843:Hydrocarbons, Chlorinated; D008670:Metals; D014241:Trichloroethylene; D010126:Ozone; D019342:Acetic Acid; C004762:2,4-dichlorophenol