YEOM, IT GHOSH, MM COX, CD ROBINSON, KG 2024-01-21T20:15:36Z 2024-01-21T20:15:36Z 2022-01-11 1995-12 0013-936X https://pubs.kist.re.kr/handle/201004/144891 Solubilization of PAHs from a coal tar-contaminated soil obtained from a manufactured gas plant (MGP) site was evaluated using nonionic polyoxyethylene surfactants at dosages greater than cmc. Up to 25% of Soxhlet-extractable PAHs could be solubilized at surfactant loadings of 0.3 g/g of soil in 16 days in completely stirred batch reactors. Longer periods were required to reach equilibrium at higher surfactant dosages. Raoult's law satisfactorily described the partitioning of constituent PAHs between the weathered coal tar and the micellar solution. An equilibrium model was developed to predict the solubilization of PAHs from coat tar-contaminated soils for given properties of the soil, surfactant, and component PAHs. The model predicted solubilization of constituent PAHs reasonably well at low surfactant dosages. At extremely high surfactant dosages, the model failed to reliably predict solubilization. Presumably, mass transfer limitations prevented attainment of equilibrium during the duration (380 h) of solubilization experiments. English AMER CHEMICAL SOC WATER SURFACTANTS MIXTURES MICELLAR SOLUBILIZATION OF POLYNUCLEAR AROMATIC-HYDROCARBONS IN COAL TAR-CONTAMINATED SOILS Article 10.1021/es00012a019 1 ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.29, no.12, pp.3015 - 3021 ENVIRONMENTAL SCIENCE & TECHNOLOGY 29 12 3015 3021 scie scopus A1995TJ35400035 Engineering, Environmental Environmental Sciences Engineering Environmental Sciences & Ecology Article WATER SURFACTANTS MIXTURES