Evaluation of Effective Parameters for Volatile Organic Compounds in Porous Media with Mobile Air Phase

Authors: Parashar, Rishi; Govindaraju, Rao

Source: Transport in Porous Media, Volume 63, Number 2, May 2006 , pp. 349-362(14)

Publisher: Springer

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Abstract:

Soil-venting or vacuum extraction is an effective tool for remediation of soils contaminated with volatile compounds. Brusseau's [Water Resour. Res. 27(12), 3189–3199, 1991] model of fate and transport of volatile compounds in the gaseous phase of dual-porosity soils with rate-limited sorption is adopted in this study. Using temporal moment analysis, expressions for effective velocity and dispersion are derived. The values of effective transport properties are presented for a set of volatile compounds for two typical soils. Sensitivity of these effective parameters to Peclet and Damkohler numbers is discussed.

Keywords: temporal moments; effective parameters; dual-porosity models

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s11242-005-7485-1

Affiliations: 1: Email: govind@ecn.purdue.edu

Publication date: 2006-05-01