Record Display for the EPA National Library Catalog


Main Title Forced air ventilation for remediation of unsaturated soils contaminated by VOC
Author Cho, Jong Soo.
CORP Author Robert S. Kerr Environmental Research Lab., Ada, OK.
Publisher Robert S. Kerr Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ;
Year Published 1991
Report Number EPA 600/2-91/016
Stock Number PB91-181750
OCLC Number 26617289
Subjects Organic wastes--Mathematical models ; Soil pollution--Mathematical models
Additional Subjects Land pollution control ; Volatile organic compounds ; Remedial action ; Soil contamination ; Mathematical models ; Experimental design ; Air flow ; Computerized simulation ; Three-dimensional calculations ; Performation evaluation ; Finite difference theory ; Soil vacuum extraction ; Cleanup operations
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EMBD  EPA/600/2-91/016 NRMRL/GWERD Library/Ada,OK 08/06/1993
NTIS  PB91-181750 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation x, 79 p. : ill. ; 28 cm.
Parameters which were expected to control the removal process of VOCs from contaminated soil during the SVE operation were studied by means of numerical simulations and laboratory experiments in the project. Experimental results of SVE with soil columns in the laboratory indicated that the removal efficiency of VOCs from soil columns was a complicated function of air flow and the hydrogeometry inside. The partition process between air and the immobile liquid was not an equilibrium one, and the interfacial mass transfer varied with the residual amount of VOCs in the soil. Additional experiments under various conditions should be conducted to obtain further insight into SVE process. Two computer models were developed to study soil air and VOC movement during the SVE process. The first one was an analytical approximate model which could be used for the simulation of air movement in the SVE operation with multiple wells in homogeneous soil media. The second one was a numerical model in three-dimensional geometry which used a finite difference solution scheme. A simple pneumatic pump test was conducted, and part of test data were used for the validation of the simple analytical model.
"May 1991" "EPA/600/2-91/016" PB91-181750 Includes bibliographical references (p. 74-79).