Solidification/Stabilization of Fe(II)-Treated Cr(VI)-Contaminated Soil

摘要

The potential of first pretreating with Fe(II) followed b cement-based solidification/stabilization (S/S) of Cr(VI)-contaminated soil was investigated. The Cr(VI) is highly toxic due to its oxidizing potential and High solubility in water. Contaminated soils were prepared in the laboratory by spiking clayey soil (20/100 Kaolinite clay) with 7,000 mg/kg Cr(VI) (25,000 mg/kg of K_2CrO_4). During the pretreatment process, up To 10/100 of FeCla_2 was added to the contaminated soil to convert Cr(VI) to Cr(III).