Transport of Volatile Organic Compounds (VOCs) Through a Clay Linerby Jae K. Park, Univ of Wisconsin-Madison, Madison, United States,
Tuncer B. Edil, Univ of Wisconsin-Madison, Madison, United States,
P. M. Berthouex, Univ of Wisconsin-Madison, Madison, United States,
Abstract: A series of tests have been performed using laboratory-scale flexible wall permeameters. A synthetic organic leachate mixture of methylene chloride, toluene, and trichloroethylene (TCE) along with potassium bromide was permeated to assess the effects of hydraulic gradient, hydrodynamic dispersion coefficient, and retardation on the movement of VOCs through a compacted clay. Hydraulic gradients of 0 and 67 were used. The diffusion coefficients were about two orders of magnitude smaller than the hydrodynamic dispersion coefficients. A mathematical model demonstrated that the clay with 1% organic carbon could retard the movement of toluene and TCE 5 to 8 times more than that with 0.1% organic carbon.
Subject Headings: Volatile organic compounds | TCE | Clays | Clay liners | Leachates | Mixtures | Hydraulic gradients | Hydrodynamics
Services: Buy this book/Buy this article
Return to search