Transport in Porous Media

, Volume 104, Issue 1, pp 77–90

Determination of Chlorinated Solvent Sorption by Porous Material—Application to Trichloroethene Vapor on Cement Mortar

  • Marion Musielak
  • Mark L. Brusseau
  • Manuel Marcoux
  • Candice Morrison
  • Michel Quintard
Article

DOI: 10.1007/s11242-014-0321-8

Cite this article as:
Musielak, M., Brusseau, M.L., Marcoux, M. et al. Transp Porous Med (2014) 104: 77. doi:10.1007/s11242-014-0321-8
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Abstract

Experiments have been performed to investigate the sorption of trichloroethene (TCE) vapor by concrete material or, more specifically, the cement mortar component. Gas-flow experiments were conducted using columns packed with small pieces of cement mortar obtained from the grinding of typical concrete material. Transport and retardation of TCE at high vapor concentrations (500 mg L\(^{-1})\) was compared to that of a non-reactive gas tracer (Sulfur Hexafluoride, SF\(_{6})\). The results show a large magnitude of retardation (retardation factor \(=\) 23) and sorption (sorption coefficient \(=\) 10.6 cm\(^{3}\) g\(^{-1})\) for TCE, compared to negligible sorption for SF\(_{6}\). This magnitude of sorption obtained with pollutant vapor is much bigger than the one obtained for aqueous-flow experiments conducted for water-saturated systems. The considerable sorption exhibited for TCE under vapor-flow conditions is attributed to some combination of accumulation at the air-water interface and vapor-phase adsorption, both of which are anticipated to be significant for this system given the large surface area associated with the cement mortar. Transport of both SF\(_{6}\) and TCE was simulated successfully with a two-region physical non-equilibrium model, consistent with the dual-medium structure of the crushed cement mortar. This work emphasizes the importance of taking into account sorption phenomena when modeling transport of volatile organic compounds through concrete material, especially in regard to assessing vapor intrusion.

Keywords

Vapor intrusion NAPL Sorption Concrete Effective diffusion 

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Marion Musielak
    • 1
  • Mark L. Brusseau
    • 2
  • Manuel Marcoux
    • 1
  • Candice Morrison
    • 2
  • Michel Quintard
    • 3
  1. 1.INPT - UPS, Institut de Mécanique des Fluides de Toulouse (IMFT), Allée Prof. Camille Soula, Université de ToulouseToulouseFrance
  2. 2.School of Earth and Environmental SciencesUniversity of ArizonaTucsonUSA
  3. 3.CNRS, IMFTToulouseFrance

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