Search
Now showing items 1-6 of 6
Feasibility of Amending Slurry Walls with Zero-Valent Iron
Publisher: American Society of Civil Engineers
Abstract: Rapid degradation of aqueous trichloroethylene (TCE) was observed in batch experiments conducted with soil/bentonite slurry wall materials amended with the addition of zero-valent iron. The first-order TCE decay constants ...
Analytical Models for the Design of Iron-Based Permeable Reactive Barriers
Publisher: American Society of Civil Engineers
Abstract: The preliminary design of iron-based permeable reactive barriers is often accomplished using analytic expressions for one-dimensional groundwater flow and contaminant transport. Typically, one or more of the governing ...
Impact of Calcium Magnesium Acetate Road Deicer on POTW Operation
Publisher: American Society of Civil Engineers
Abstract: Recently, calcium magnesium acetata (CMA) was identified by the Federal Highway Administration as a potentially suitable, noncorrosive road deicer substitute for sodium and calcium chloride. Research on the environmental ...
Evaluation of Granular Activated Carbon, Shale, and Two Organoclays for Use as Sorptive Amendments in Clay Landfill Liners
Publisher: American Society of Civil Engineers
Abstract: Four materials with high sorptive capacities for organic compounds [granular activated carbon (GAC), shale, benzyltriethylammonium-bentonite (BTEA-bentonite), and hexadecyltrimethylammonium-bentonite (HDTMA-bentonite)] ...
Optimal Design of a Compacted Soil Liner Containing Sorptive Amendments
Publisher: American Society of Civil Engineers
Abstract: The design of a compacted soil liner that includes sorptive amendments is presented and evaluated as a combinatorial optimization problem. An objective function based on the materials costs, opportunity costs, and construction ...
Analytic-Element Modeling of Supraregional Groundwater Flow: Concepts and Tools for Automated Model Configuration
Publisher: American Society of Civil Engineers
Abstract: The analytic-element method (AEM) is an appealing technique for modeling steady-state groundwater flow at the supraregional scale (defined here as