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.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Authors:
  • Rowe, Kerry
  • Mukunoki, Toshifumi
  • Sangam, Henri P
• Publication Date: 2005-10-1

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 11211-1221
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 131
  • Issue Number: 10
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Aromatic hydrocarbons; Benzene; Clay; Geosynthetics; Hydrocarbons; Sorption; Temperature
• Uncontrolled Terms: Clay liners; Diffusion (Geosynthetics); Diffusion coefficient; Volatile aromatics
• Subject Areas: Geotechnology; Highways; Materials; I30: Materials;

Filing Info

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