In situ decomposition of PAHs in soil and desorption of organic solvents using microwave energy

被引:60
作者
Abramovitch, RA [1 ]
Huang, BZ
Abramovitch, DA
Song, JG
机构
[1] Clemson Univ, Dept Chem, Clemson, SC 29634 USA
[2] Anderson Coll, Dept Sci & Math, Anderson, SC USA
关键词
D O I
10.1016/S0045-6535(98)00590-6
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The decomposition of individual PAH's (benzo[a]pyrene, benzo[b]fluoranthene, dibenz[a,h]anthracene, benz[a]anthracene, 1-nitropyrene and benzo[f]quinoline) in soil in an open vessel using microwave energy is reported. No PAH's remain in the soil after remediation. An attempt to use C-14-labelled benzo[a]pyrene to determine the fate of that contaminant on remediation led only to the observation of the formation of 0.3% of (CO2)-C-14. None of the other decomposition products could be extracted, isolated or quantified. Using a similar procedure, a variety of organic solvents (cyclohexane, 1,1,1-trichloroethane, tetrachloroethylene, benzene, toluene and xylene) could be efficiently desorbed and collected from contaminated soil. These experiments offer a valid model for the in situ remediation of these pollutants from contaminated soil. (C) 1999 Elsevier Science Ltd. All rights reserved.
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页码:81 / 87
页数:7
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