Analytical Inverse Model for Multicomponent Soil Vapor Extraction
Publication: Journal of Environmental Engineering
Volume 124, Issue 6
Abstract
An analytical model has been developed to predict in-situ compositions and contaminant volumes from early monitoring of effluent gas concentrations of individual species during multicomponent soil vapor extraction. The model exploits the wave-like propagation of the evaporation fronts of individual species to present analytical expressions for the in-situ compositions, contaminant volumes, effluent concentrations, and recovery rates during discrete time intervals. The efficiency of soil vapor extraction systems also can be determined. Comparison of this theory to a previous experiment of through-flow venting of benzene, toluene, and o-xylene yielded excellent agreement. This suggests that if effluent concentrations of individual species are monitored in the field during soil vapor extraction operations, only minimal data are required at early times to yield predictions of in-situ compositions and contaminant volumes, as well as subsequent effluent concentrations and recovery rates.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 124 • Issue 6 • June 1998
Pages: 504 - 509
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Jun 1, 1998
Published in print: Jun 1998
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