Abstract:
:An innovative ex situ soil washing technology was developed in this study to remediate organochlorine pesticides (OCPs)-contaminated site. Elevated temperature (50 °C) combined with ultrasonication (35 kHz, 30 min) at 25 g L(-1) methyl-β-cyclodextrin and 100 mL L(-1) sunflower oil were effective in extracting OCPs from the soil. After four successive washing cycles, the removal efficiency for total OCPs, DDTs, endosulfans, 1,2,3,4,5,6-hexachlorocyclohexanes, heptachlors, and chlordanes were all about 99%. The 4th washed soil with 3 months cultivation of Portulaca oleracea L. and nutrient addition significantly increase (p<0.05) the number, biomass carbon, nitrogen, and functioning diversity of soil microorganisms. This implied that the microbiological functioning of the soil was at least partially restored. This combined cleanup strategy proved to be effective and environmental friendly.
journal_name
Chemospherejournal_title
Chemosphereauthors
Ye M,Sun M,Hu F,Kengara FO,Jiang X,Luo Y,Yang Xdoi
10.1016/j.chemosphere.2013.12.058subject
Has Abstractpub_date
2014-06-01 00:00:00pages
119-25eissn
0045-6535issn
1879-1298pii
S0045-6535(13)01723-2journal_volume
105pub_type
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