Université Lille Nord de France, 1 bis rue Georges Lefèvre, 59044 Lille Cedex, France.
Environ Pollut. 2012 Jun;165:11-7. doi: 10.1016/j.envpol.2012.02.004. Epub 2012 Mar 3.
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.
在同一块初始土壤上进行了实验室实验，并与条垛处理同时进行，以便在田间和实验室尺度上比较主要受多环芳烃污染的土壤的结果。6 个月后，实验室实验的结果与田间实验相似，但分散程度较低，表明田间生物处理得到了很好的优化。6 个月后，多环芳烃的总降解量约为 90%，降解率呈负指数趋势。3-和 4-环多环芳烃的相对降解率分别是 5-和 6-环多环芳烃的 32 倍和 7.2 倍。就细菌群落而言，γ-变形菌属的细菌得以存活，而β-变形菌属的细菌则在生物处理三个月后出现，此时多环芳烃浓度降低到足以使土壤无生态毒性的水平。
