Rg. Sheets et Ba. Bergquist, Laboratory treatability testing of soils contaminated with lead and PCBs using particle-size separation and soil washing, J HAZARD M, 66(1-2), 1999, pp. 137-150
A soil treatability study was conducted using particle-size separation and
soil washing to reduce the volume of material contaminated with polychlorin
ated biphenyls (PCBs) and lead at a Superfund site. Soil washing using surf
actant was effective at removing 95% of PCBs into fine material and residua
l wash water. Results indicate that almost 80% of the material contaminated
with up to 140 mg/kg PCBs could be treated to concentrations below 10 mg/k
g using soil washing with surfactant. There did not appear to be a differen
ce in Ead removal using either particle size separation or soil washing, al
though the lead data have high uncertainty because of soil heterogeneity. L
ead concentrations in soil were reduced from as high as 1700 to less than o
r equal to 150 mg/kg and from 560 to less than or equal to 220 mg/kg in abo
ut half of the material using particle size separation. (C) 1999 Elsevier S
cience B.V. All rights reserved.