Prior investigations by the principal author evaluated the feasibility of mobilizing non-aqueous phase liquid (NAPL) ganglia by inducing vibrations in a soil-NAPL-water medium. In this paper, results from bench-scale experiments are reported to provide a practical understanding of the impact of vibrations (induced with a probe-type vibrator) on relative density of the medium and on the ganglia ...

The spatial and temporal distributions of multiple reductively dechlorinating bacteria were simultaneously assessed in a one-dimensional sand column containing a tetrachloroethene (PCE) nonaqueous phase liquid (NAPL) source and associated plume zones. The column was uniformly inoculated with a PCE-to-ethene dechlorinating microbial consortium that contained Dehalococcoides spp., Dehalobacter sp...

SCOPE AND BACKGROUND Contamination of soils, aquifers and groundwater by nonaqueous phase liquid (NAPL) pollutants constitutes a major environmental issue of concern, worldwide. The residual (biodegradation-resistant) hydrophobic fuel hydrocarbons entrapped in the soil porous matrix, possess a particular bioremediation challenge due to their becoming virtually immobile, nor desorbable, or water...

Soils and groundwater are often contaminated by complex organic mixtures also called Non Aqueous Phase Liquids (NAPLs). Several techniques such as drilling, monitoring of soil gas or injection tracers traditionally used to quantify NAPLs in aquifers but perform. The use natural 222Rn could be an easy cheap alternative. This method requires the knowledge radon NAPL-water partitioning coefficient...

The time domain reflectometry (TDR) technique is a geophysical method that allows, in time-varying electric field, the determination of dielectric permittivity and electrical conductivity wide class porous materials. Measurements volumetric water content (θw) soils most frequent application TDR Soil Science Hydrology. In last four decades several studies have sought to explore potential applica...