BTEX Diffusion and Sorption for a Geosynthetic Clay Liner at Two Temperatures

The diffusion and sorption characteristics of a geosynthetic clay liner (GCL) are examined for a group of volatile aromatic hydrocarbons: benzene, ethylbenzene, m&p-xylene, and o-xylene (BTEX) at two different temperatures. It is shown that geotextile component of a GCL contributes to the sorption of hydrocarbons by the GCL. While the partitioning coefficients of the BTEX compounds have the order m&p-xylene=ethylbenzene>o-xylene>toluene>benzene, the diffusion coefficients have the order benzene>toluene>ethylbenzene>m&p-xylene=o-xylene. The reduction in diffusion and sorption coefficients with decreasing temperature have opposite effects in terms of the rate of contaminant movement through a GCL. However, it is shown that the decrease in transport due to a reduced diffusion coefficient dominates and mass transport is reduced at lower temperature.

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  • Authors:
    • Rowe, Kerry
    • Mukunoki, Toshifumi
    • Sangam, Henri P
  • Publication Date: 2005-10-1


  • English

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  • Accession Number: 01005851
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 7 2005 8:07AM