Molecular migration of low sorbing organic liquids into polymeric geomembranes
✍ Scribed by Aminabhavi, T M; Naik, H G
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 161 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0959-8103
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✦ Synopsis
Laboratory test results of sorption/desorption for tetrahydrofuran, tetralin, 1,4-dioxan, methyl acetate, ethyl acetate and butyl acetate into high density polyethylene, linear low density polyethylene, very low density polyethylene and polypropylene geomembranes at 25, 50 and 70 °C are presented. Partition coef®cients are calculated from the measured increase in the mass of geomembranes immersed in the liquid of interest, from the initial value until the mass becomes constant. From the initial linear portions of the sorption curves, the diffusion coef®cients of liquids into the geomembranes are calculated using the Fick equation. From a temperature dependence of sorption, diffusion and permeation coef®cients, the Arrhenius parameters are calculated for each of these processes. Results of the preliminary ®ndings reported here might be useful in the applications of geomembranes in containment facilities.