A hybrid fenton oxidation-microbial treatment for soil highly contaminated with benz(a)anthracene.
In order to mitigate the strong microbial resistance of benz(a)anthracene [B(a)A] in soil, a hybrid treatment of Fenton oxidation followed microbial culture was carried out. Based on optimal Fenton oxidation. i.e., 1.0 ml of ethanol, 0.2 ml of 0.5 M Fe2+, and 0.3 ml of 30% H2O2 per 1 g of 500 mg B(a)A/kg soil, about 43% of B(a)A-7,12-dione was generated during oxidation of 97% B(a)A. When the comparative biodegradability between B(a)A-contaminated soil and B(a)A-contaminated soil after Fenton oxidation was examined, it was found that 98% of B(a)A-7,12-dione degraded after 63 d in comparison with only 12% of B(a)A over the same period; results demonstrating that Fenton oxidation enhances biodegradability of B(a)A through B(a)A-7,12-dione.
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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M
D001551:Benz(a)Anthracenes / Q000378:metabolism*; D001673:Biodegradation, Environmental; D006861:Hydrogen Peroxide; D007501:Iron; D010084:Oxidation-Reduction; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism*
D001551:Benz(a)Anthracenes; C045076:Fenton's reagent; D012989:Soil Pollutants; D006861:Hydrogen Peroxide; C030935:benz(a)anthracene; D007501:Iron