Clean-up of PAH-contaminated Soil by Ethanol Washing-Fenton Treatment: Ethanol Washing Efficiency and Fenton Reaction Products.
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概要
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This paper presented applicability of ethanol washing-Fenton treatment of washing solution for polycyclic aromatic hydrocarbon (PAH) -contaminated soil. Each fluoranthene (FLUT), anthracene (ANT), pyrene (PYN), benzo (<I>b</I>) fluoranthene (BBFT), or benzo (<I>a</I>) pyrene (BAP) -contaminated artificial soil (<I>i.e.</I>, loamy soil namely akadama) was prepared at concentrations ten times higher than its regulatory soil standards of the Netherlands or Canada. After up to four times washing by ethanol, the concentration of each soil could be reduced to below its regulatory standard. Only one time for ANT- and four times for FLUT- and PYN-contaminated soil were needed to meet soil standards of the Netherlands. Also four times for BBFT- and BAP-contaminated soil were needed to meet soil standards of the Canada. Fenton oxidation of simulated washing solution (<I>i.e.</I>, pure ethanol) containing, acenaphthylene, acenaphthene, ANT, PYN, benz (<I>a</I>) anthracene, benzo (<I>j</I>) fluoranthene, BAP, or indeno (l, 2, 3-cd) pyrene showed removal efficiency of 73.3-99.0%. But in contrast, those containing naphthalene (NAP), fluorene (FLU), FLUT, phenanthrene (PHE), or BBFT showed removal efficiency of 9.6-27.6%. Fortunately NAP, FLU, FLUT, and PHE, excluding BBFT, are easily biodegradable. Therefore these results indicate that ethanol washing-Fenton (or microbial) treatment can be successfully applied to PAH-contaminated soil that does not contain high concentrations of BBFT.
- 日本環境化学会の論文
日本環境化学会 | 論文
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