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RISModeling Lateral Gas Transport in Soil Adjacent to Old Landfill
Publisher: American Society of Civil Engineers
Abstract: Lateral migration of landfill gases in soils surrounding old (closed) municipal landfills can lead to explosion hazards and damage to vegetation. Landfill gas production and migration is controlled by microbial activity ...
Predicting Air Permeability in Undisturbed, Subsurface Sandy Soils from Air-Filled Porosity
Publisher: American Society of Civil Engineers
Abstract: A model for predicting air permeability
Effects of Vapor Extraction on Contaminant Flux to Atmosphere and Ground Water
Publisher: American Society of Civil Engineers
Abstract: Numerical simulations were used to evaluate the effects of vapor extraction operations on contaminant loadings to the atmosphere, the ground water, and to the vapor extraction well under application of vapor extraction. A ...
Gas Permeability and Diffusivity in Undisturbed Soil: SVE Implications
Publisher: American Society of Civil Engineers
Abstract: Accurate prediction of air transport parameters in variably saturated soil is a prerequisite for realistic modeling of soil vapor extraction (SVE) systems for cleanup of contaminated soil sites. Improved models for estimating ...
VOC Vapor Sorption in Soil: Soil Type Dependent Model and Implications for Vapor Extraction
Publisher: American Society of Civil Engineers
Abstract: Vapor sorption of volatile organic chemicals (VOC) to soil minerals becomes the dominant VOC sorption mechanism at low soil-water contents, but is not included in traditional VOC transport and fate models. A two-parameter ...