Fenton oxidation of ethanol-washed distillation-concentrated benzo(a)pyrene: reaction product identification and biodegradability.
After multiple ethanol washings followed by distillation, concentrated benzo(a)pyrene (B(a)P) in ethanol (approximately 85 mg L(-1)) was treated by Fenton oxidation, where > 99.8% of B(a)P was removed under a pseudo-first-order reaction. GC-MS and HPLC analysis identified B(a)P-1,6-, -3,6-, and -6,12-dione as Fenton oxidation products; all of which are known to have lower toxicity than B(a)P. Microbial resistance experiments demonstrated that B(a)P-1.6-, -3.6-, and -6,12-dione are more easily degraded than B(a)P. These results indicate that the proposed treatment can be effectively applied to remediate B(a)P-contaminated soil.
Lee
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BD
Department of Chemical Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan. leebd@cc.tuat.ac.jp
Hosomi
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D001564:Benzo(a)pyrene / Q000737:chemistry / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid; D000431:Ethanol; D008401:Gas Chromatography-Mass Spectrometry; D006861:Hydrogen Peroxide; D007501:Iron; D010084:Oxidation-Reduction; D012989:Soil Pollutants / Q000378:metabolism*
C045076:Fenton's reagent; D012989:Soil Pollutants; D001564:Benzo(a)pyrene; D000431:Ethanol; D006861:Hydrogen Peroxide; D007501:Iron