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Main Title Fundamental approach to service life of flexible membrane liner's (FML's) /
Author Lord, Arthur E. ; Koerner, R. M.
Other Authors
Author Title of a Work
Koerner, Robert M.
CORP Author Drexel Univ., Philadelphia, PA.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher Risk Reduction Engineering Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1990
Report Number EPA/600/2-90/041
Stock Number PB90-263856
Subjects Refuse and refuse disposal--Safety measures ; Waste disposal in the ground--Safety measures ; Waste disposal sites--Safety measures
Additional Subjects Thermoplastic resins ; Linings ; Mass transfer ; Chemical resistance ; Waste disposal ; Sodium hydroxide ; Sulfuric acid ; Phenol ; Xylenes ; Life tests ; Land pollution abatement ; Membrane transport
Library Call Number Additional Info Location Last
NTIS  PB90-263856 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 88 pages ; 28 cm
The prediction of the service life of flexible membrane liners (FMLs) when exposed to chemicals has usually been by way of testing for physical or mechanical property changes after periodic exposure times. The paper presents an alternate approach by evaluating the properties via five different mass transport related measurements of the exposed FML. These tests are water vapor transmission (WVT), radioactive tracer transmission (RT), water absorption (WA), water vapor absorption (WVA), and benzene absorption (BA). This approach was tested for exposures of up to 15 months. The FMLs used were polyvinyl chloride (PVC), ethylene-propylene-diene monomer (EPDM), chlorinated polyethylene (CPE), and high density polyethylene (HDPE). The chemicals used were 10% sodium hydroxide (in water), 10% sulfuric acid (in water), 10% phenol (in water), 100% xylene, and water (as a control). The WVT and RT were found to be quite reliable test methods, whereas the WA and WVA techniques experienced serious problems in regard to obeying simple one-dimensional diffusion theory. The BA method worked well for HDPE. The work reported herein lends credence to the use of mass transport measurements to determine structural change in FMLs. Thus the monitoring of transport properties could serve as the basis for a predictive method for FML lifetime.
"August 1990." "Cooperative agreement CR 810977." "EPA/600/2-90/041." Microfiche.