Abstract: A two-layer barrier system has been developed to remediate gasoline-contaminated ground water. This system consists of a nutrient briquet layer to continuously supply nitrate as the electron acceptor for contaminant ...

Abstract: The ability of a laboratory-scale trickling filter to biodegrade cyclic ethers was investigated and a simple kinetic model was developed to predict ether biodegradation. The trickling filter received a feed solution designed ...

Abstract: Intrinsic biodegradation of petroleum hydrocarbons in the subsurface has gained increased acceptance as a remedial alternative where the risk of exposure is within acceptable standards. However, methods to predict reliably ...

Abstract: The transport and retention of a soybean oil-in-water emulsion was evaluated in laboratory columns packed with a medium to fine clayey sand amended with varying amounts of kaolinite. Results from these experiments demonstrated ...

Abstract: Injection of edible oils into the subsurface can provide an effective, low-cost alternative for stimulating anaerobic bioremediation processes. However, concerns have been raised about the effects of oil buoyancy and ...

Abstract: Spatial heterogeneity of microbial populations (total heterotrophs or total bacteria (AODC), iron reducers, sulfate reducers, methanogens, aerobic, and anaerobic protozoa) and geochemical parameters (hydrocarbon concentrations, ...

Abstract: The availability of Fe(III) for microbial reduction was measured in macrocosms containing contaminated aquifer sediment with benzaldehyde as the organic substrate. Repeated benzaldehyde additions initially resulted in an ...