Abstract：
:A batch experiment was conducted to assess the impact of chemical oxidation using modified Fenton reaction on PAH content and on physico-chemical and biological parameters of an industrial PAH contaminated soil in unsaturated condition. Two levels of oxidant (H(2)O(2), 6 and 65 g kg(-1)) and FeSO(4) were applied. Agronomic parameters, bacterial and fungal density, microbial activity, seed germination and ryegrass growth were assessed. Partial removal of PAHs (14% and 22%) was obtained with the addition of oxidant. The impact of chemical oxidation on PAH removal and soil physico-chemical and biological parameters differed depending on the level of reagent. The treatment with the highest concentration of oxidant decreased soil pH, cation exchange capacity and extractable phosphorus content. Bacterial, fungal, and PAH degrading bacteria densities were also lower in oxidized soil. However a rebound of microbial populations and an increased microbial activity in oxidized soil were measured after 5 weeks of incubation. Plant growth on soil treated by the highest level of oxidant was negatively affected.
journal_name
Chemospherejournal_title
Chemosphereauthors
Laurent F,Cébron A,Schwartz C,Leyval Cdoi
10.1016/j.chemosphere.2011.11.018subject
Has Abstractpub_date
2012-02-01 00:00:00pages
659-64issue
6eissn
0045-6535issn
1879-1298pii
S0045-6535(11)01283-5journal_volume
86pub_type
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