Methane gas migration through geomembranes-Reference-Cited by-同舟云学术

Methane gas migration through geomembranes

Published:2005-03 Issue:2 Volume:12 Page:120-125
ISSN:1072-6349
Container-title:Geosynthetics International
language:en
Short-container-title:Geosynthetics International

Author:

Stark T. D.¹,Choi H.²

Affiliation:

1. 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,

2. Department of Civil Engineering, University of Akron 209D ASEC, Akron, OH 44325-3905, USA, Telephone: +1 330 972 7292, Telefax: +1 330 972 6020,

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 7.55×104 ml(STP).mil/m2.day.atm, which is slightly less than the gas permeability coefficient of 8.61×104 ml(STP).mil/m2.day.atm through an LLDPE geomembrane, but slightly higher than the gas permeability coefficient of 3.91×104 ml(STP).mil/m2.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.

Publisher

Thomas Telford Ltd.

Subject

Geotechnical Engineering and Engineering Geology,Civil and Structural Engineering

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/gein.2005.12.2.120

Reference11 articles.

1. Methane gas migration through geomembranes

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.

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