期刊
ENVIRONMENTAL POLLUTION
卷 165, 期 -, 页码 11-17出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2012.02.004
关键词
Bioremediation; Contaminated soils; Polycyclic aromatic hydrocarbons (PAHs); Laboratory and field experiments; Bacterial diversity
资金
- ADEME (Agence de l'Environnement et de la Maitrise de l'Energie)
- FEDER
A laboratory experiment was carried on the same initial soil and at the same time than a windrow treatment in order to compare results at field and laboratory scales for a soil mainly contaminated with PAHs. After 6 months, laboratory experiments gave similar but less scattered results than those obtained in the field indicating that the field biotreatment was well optimised. The total amount of PAHs degraded after 6 months was ca. 90% and degradation rates followed a negative exponential trend. Relative degradation rates of 3- and 4-ring PAHs were about 32 and 7.2 times greater than those of 5- and 6-ring PAHs, respectively. With respect to the bacterial community, bacteria belonging to Gamma-proteobacteria persisted whereas Beta-proteobacteria appeared after three months of biotreatment when PAH concentration was low enough to render the soil non-ecotoxic. (C) 2012 Elsevier Ltd. All rights reserved.
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