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This communication reports the results of a study to assess the suitability of the National Research Council of Canada's Solvent Extraction Soil Remediation (SESR) process to effectively remediate soils contaminated with PCBs. A series of small-scale batch extraction tests were carried out using a loamy clay soil sample spiked with Aroclor 1016. The variables examined included the effects of solvent type, water addition, agglomerate size, and extraction additives. Aroclor 1016 recovery rates for the SESR process were higher than those found for high shear agitation of soil slurries without agglomeration and Soxhlet extraction (93.9 \ub1 1.9, 90.6 \ub1 1.5 and 82.7 \ub1 0.9% respectively). A two-stage extraction process, with a series of three wash steps incorporated into the solid\u96liquid separation operation, produced a treated soil with an average Aroclor 1016 concentration of 49 \ub1 8 mg/kg on a dry weight basis (95.4 \ub1 2.4% removed).Cet article cite les r\ue9sultats d'une \ue9tude visant \ue0 \ue9valuer la pertinence du proc\ue9d\ue9 de restauration des sols par extraction au solvant (SESR) du Conseil national de recherches du Canada pour restaurer efficacement les sols contamin\ue9s aux BPC. Une s\ue9rie de tests d'extraction par lots \ue0 petite \ue9chelle a \ue9t\ue9 effectu\ue9e en utilisant un \ue9chantillon sol loameux additionn\ue9 d'Aroclor 1016. Les variables \ue9tudi\ue9es comprenaient les effets du type de solvant, l'ajout d'eau, la dimension de l'agglom\ue9rat et les additifs d'extraction. Les taux de r\ue9cup\ue9ration d'Aroclor 1016 par le proc\ue9d\ue9 SESR ont \ue9t\ue9 sup\ue9rieurs \ue0 ceux retrouv\ue9s par de l'agitation \ue0 cisaillement \ue9lev\ue9 de boues de sols sans agglom\ue9ration et par l'extraction au Soxhlet (93,9 \ub1 1,9, 90,6 \ub1 1,5 et 82,7 \ub1 0,9 % respectivement). Un proc\ue9d\ue9 d'extraction en deux \ue9tapes, avec une s\ue9rie de trois \ue9tapes de lavage incorpor\ue9e dans l'op\ue9ration de s\ue9paration solide-liquide a produit un sol trait\ue9 contenant une concentration moyenne d'Aroclor 1016 de 49 \ub1 8 mg/kg de poids sec (95,4 \ub1 2,4 % retir\ue9).Peer reviewed: YesNRC publication: Ye

Removal of Aroclor 1016 from contaminated soil by Solvent Extraction Soil Agglomeration Process