Methane gas migration through geomembranes
Source abstract
Abstract
The objectives of this technical note are to review the gas transport mechanisms through flexible geomembranes, and to measure the methane gas transmission rate, permeance, and permeability coefficient of PVC, LLDPE, and HDPE geomembranes by performing the standard gas transport test ( ASTM D 1434 ). The measured methane gas permeability coefficient through a PVC geomembrane is 7.55×10 4 ml(STP).mil/m 2 .day.atm, which is slightly less than the gas permeability coefficient of 8.61×10 4 ml(STP).mil/m 2 .day.atm through an LLDPE geomembrane, but slightly higher than the gas permeability coefficient of 3.91×10 4 ml(STP).mil/m 2 .day.atm through an HDPE geomembrane. Thus HDPE exhibits a lower gas permeability coefficient than LLDPE. A field design chart for estimating the methane gas transmission rate for different geomembrane thicknesses is proposed using the measured permeability coefficients for PVC, LLDPE, and HDPE geomembranes and Fick's law. This chart can be used by landfill designers to evaluate the methane gas transmission rate for a selected geomembrane type and thickness and expected methane gas pressure in the landfill.
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Research context
OpenAlex topics: Landfill Environmental Impact Studies · Grouting, Rheology, and Soil Mechanics · Geotechnical Engineering and Underground Structures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil and Environmental Engineering 2217 Newmark Civil Engineering Laboratory, University of Illinois, 205 N. Mathews Ave., Urbana, IL 61801, USA, Telephone: +1 217 333 7394, Telefax: +1 217 333 9464,
Department of Civil Engineering, University of Akron 209D ASEC, Akron, OH 44325-3905, USA, Telephone: +1 330 972 7292, Telefax: +1 330 972 6020,
References (11)
Show source-provided references
1. 10.1680/gein.2005.12.2.12010.1680/gein.2005.12.2.120 ↗
2. ASTM D 792. ASTM International, West Conshohocken, PA, USA, Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement.
3. ASTM D 1434. ASTM International, West Conshohocken, PA, USA, Standard Test Method for Determining Gas Permeability Characteristics of Plastic Film and Sheeting.
4. ASTM D 1505. ASTM International, West Conshohocken, PA, USA, Standard Test Method for Density of Plastics by the Density-Gradient Technique.
5. ASTM D 5199. ASTM International, West Conshohocken, PA, USA, Standard Test Methods for Measuring the Nominal Thickness of Geosynthetics.
6. 10.1021/j150543a00710.1021/j150543a007 ↗
7. Haxo H. E, Koerner R. M. 1990, ASTM International, West Conshohocken, PA, USA, 75–94, Determining the transport through geomembranes of various permeants in different applications. In Geosynthetic Testing for Waste Containment Applications, STP 1081.10.1520/STP19024S ↗
8. Haxo H. E. · 1984 · 151
9. Mark H. F. · 1964
10. 10.1007/978-94-017-0835-710.1007/978-94-017-0835-7 ↗
11. 10.1680/gein.9.022210.1680/gein.9.0222 ↗