Open AccessDemonstration, testing, and evaluation of in situ heating of soil. Final report, Volume 2, Appendices A to E
Author(s) -
H. Dev,
J. Enk,
D. R. V. Jones,
W. Sabato
Publication year - 1996
Language(s) - English
Resource type - Reports
DOI - 10.2172/218818
Subject(s) - soil vapor extraction , in situ , volume (thermodynamics) , permeability (electromagnetism) , environmental science , plume , volumetric flow rate , soil science , soil water , environmental chemistry , contamination , chemistry , environmental remediation , ecology , biochemistry , physics , organic chemistry , quantum mechanics , membrane , biology , thermodynamics
This is a final report presented in two volumes. Volume I contains the technical report and Volume II contains appendices with background information and data. In this project approximately 300 cubic yards of clayey soil containing a low concentration plume of volatile organic chemicals was heated in situ by the application of electrical energy. It was shown that as a result of heating the effective permeability of soil to air flow was increased such that in situ soil vapor extraction could be performed. The initial permeability of soil was so low that the soil gas flow rate was immeasurably small even at high vacuum levels. It was demonstrated that the mass flow rate of the volatile organic chemicals was enhanced in the recovered soil gas as a result of heating. When scaled up, this process can be used for the environmental clean up and restoration of DOE sites contaminated with VOC`s and other organic chemicals. Although it may be applied to many types of soil formations, it is particularly attractive for low permeability clayey soil where conventional in situ venting techniques are limited by air flow