Abstract: Bentonite modified by cationic surfactants has been the focus of attention for engineering applications such as in horizontal cut-offs, grout mixes, cut-off slurries, soil motars, and landfill liners because of its high ...

Abstract: The solidification/stabilization (S/S) process is applicable to soil contaminated by metals and other inorganics. However, this process is not currently viewed by the U.S. Environmental Protection Agency (EPA) as applicable ...

Abstract: Organoclays, clays modified by cationic surfactants, for engineering applications have recently drawn great attention because of their high organic removal capacity. In this study, the potential use of organoclays with ...

Abstract: The effects of the operating conditions, the initial concentrations of marine diesel fuel (MDF) and the coexisting Pb in the soil, and the ethylene diamine tetra acetic salt (EDTA) in solution on MDF removal by sodium ...

Abstract: A composite liner composed of a soil/clay liner and a flexible membrane is widely used for waste containment facilities. In this research, an organically modified clay (organoclay BB-40) liner and a high-density polyethylene ...

Abstract: Conventional clay liners, which are widely used as hydraulic barriers to water, have been shown to be adversely affected by organic fluids. However, the addition of quaternary amines into bentonite greatly enhances its ...

Abstract: Centrifuge modeling of the long-term migration of light nonaqueous-phase liquids (LNAPLs) in unsaturated soils has been accomplished at a gravitational acceleration of

Abstract: A prototype expert system program was developed to select the best available technology used for the removal of volatile organic chemicals and synthetic organic chemicals from contaminated water. The technologies considered ...

Abstract: The influence of seepage velocity and groundwater temperature on the dechlorination rates of trichloroethylene (TCE) and tetrachloroethylene (PCE) by zero-valent iron

Abstract: Heavy metal migration through compacted, saturated sand and bentonite/soil admixtures were investigated using kinetic, batch sorption tests, and column tests. Sorption of Pb, Zn, and Cd at pH 5 by bentonite is found to be ...