Journal
CHEMOSPHERE
Volume 43, Issue 8, Pages 1127-1132Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0045-6535(00)00182-X
Keywords
benz(a)anthracene; benz(a)anthracene-7,12-dione; biodegradability; Fenton oxidation; microbial resistance; contaminated soil
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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 mi of ethanol, 0.2 mi of 0.5 M Fe2+, and 0.3 mi 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. (C) 2001 Elsevier Science Ltd. All rights reserved.
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