Effect of metal ions on decomposition of chlorinated organic substances by ozonation in acetic acid.
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.
Okawa
Kiyokazu
K
Fukuoka University Institute for Recycling and Environmental Control System, 10 Koyocho, Wakamatsu-ku, Kitakyushu City, Fukuoka 808-0002, Japan. okawa@fukuoka-u.ac.jp
Tsai
Tsung-Yueh
TY
Nakano
Yoichi
Y
Nishijima
Wataru
W
Okada
Mitsumasa
M
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*
D002412:Cations; D002733:Chlorophenols; D004202:Disinfectants; D006843:Hydrocarbons, Chlorinated; D008670:Metals; D014241:Trichloroethylene; D010126:Ozone; D019342:Acetic Acid; C004762:2,4-dichlorophenol