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Analytical Solution for Diffusion of VOCs through Composite Landfill Liners
Publisher: American Society of Civil Engineers
Abstract: Analytical solutions are presented for analyzing volatile organic compound (VOC) diffusion through intact composite landfill liners for two scenarios with boundary conditions at the base of either a VOC concentration of ...
Analytical Solutions for Contaminant Diffusion in Double-Layered Porous Media
Publisher: American Society of Civil Engineers
Abstract: Analytical solutions for conservative solute diffusion in one-dimensional double-layered porous media are presented in this paper. These solutions are applicable to various combinations of fixed solute concentration and ...
All-Atomic Modeling of the Compaction of Montmorillonite Clays: Fabric Evolution and Energy Conversion
Publisher: American Society of Civil Engineers
Abstract: Compaction is an essential compression process for sedimentary soils. Compared with in-depth studies on granular soil behaviors, numerical modeling of clay compaction is still in its infancy. This study presents an all-atomic ...
Mathematical Modeling and Experimental Validation for the Performance of Soil–Bentonite Cutoff Walls Considering Chemical Compatibility
Publisher: American Society of Civil Engineers
Abstract: The soil–bentonite cutoff wall (SB wall) is commonly employed as a barrier at contaminated sites. However, recent research has revealed that the performance of the SB wall material can significantly deteriorate due to the ...
Gas Pressure Model for Layered Municipal Solid Waste Landfills
Publisher: American Society of Civil Engineers
Abstract: A mathematical model for calculating gas pressure profiles in layered landfill systems is presented. Solutions to scenarios considering a zero-pressure top boundary condition and a zero gas flux or fixed gas pressure bottom ...
One-Dimensional Transient Analytical Solution for Gas Pressure in Municipal Solid Waste Landfills
Publisher: American Society of Civil Engineers
Abstract: Landfill gas (LFG) is generated in municipal solid waste (MSW) landfills because of the decomposition of degradable components. Gas pressure within the landfilled MSWs is of importance as cover or landfill stability may ...
Design Charts for Contaminant Transport through Slurry Trench Cutoff Walls
Publisher: American Society of Civil Engineers
Abstract: Slurry trench cutoff walls with low-permeability backfill material, such as soil-bentonite and slag-cement-bentonite, are used widely for containment of subsurface pollution. In the design of slurry walls the potential ...
Comparison of Adsorption Behaviors of Kaolin from Column and Batch Tests: Concept of Dual Porosity
Publisher: ASCE
Abstract: Batch equilibrium tests with various soil-liquid ratios (S/L=1∶2.5, 1∶5, 1∶10, and 1∶20) and column tests with a flow interruption and rest period were performed to evaluate the adsorption behavior of kaolin. Identical ...