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TRANSPORT OF DISSOLVED ORGANICS FROM DILUTE AQUEOUS SOLUTIONS THROUGH FLEXIBLE MEMBRANE LINERS
Citation:
Haxo, Jr., H., T. Lahey, Matrecon, Inc., Alameda, AND C. 94501. TRANSPORT OF DISSOLVED ORGANICS FROM DILUTE AQUEOUS SOLUTIONS THROUGH FLEXIBLE MEMBRANE LINERS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-88/317 (NTIS PB89207302), 1989.
Description:
This paper presents the results of experiments relating to the partitioning of dissolved organics from dilute aqueous solutions to polymeric flexihle memhrane liner (FMLs) and their permeation through these liners. n order to simulate partitioning and the transport of waste constituents within and out of a Landfill, two sets of experiments were performed. n the first set, samples of an FML that were either unexposed or saturated with an organic were placed in test liquids, including deionized (DI) water, neat orqanics, and sattrated aqueous solutions of orqanics. n the second set, the partitioning of organics measured in a three-compartment closed apparatus. he results of these experiments show that, even at low concentrations in an aqueous solution, some orqanics can he highly absorbed by a polyethylene (PE) FML, reaching equilibrium concentrations in less than 120 hours. richloroethylene (TCE\, toluene, and o-xylene migrated from the dilute aqueous solution and penetrated a PE FML barriers in as short a time as 74 hours after the experiment had begun.