SYMPOSIA PAPER Published: 01 January 1996
STP14120S

Lab-Scale Tests on ISV Vapor Transport Phenomena

Source

In situ vitrification (ISV) is a promising technology for remediating buried waste sites and contaminated soil sites. However, concerns exist that low soil permeabilities may limit vapor transport away from the advancing melt front and cause a melt expulsion that breaches ISV containment. As a result, two ISV lab tests were conducted at the Idaho National Engineering Laboratory (INEL) using INEL soil (permeability: 10-6 cm/s) and a low permeability (10-10 cm/s) clay material. The clay test also had a ceramic tube inserted vertically through the center of the area being melted to provide one-dimensional data on vapor transport. Results confirm that low soil permeabilities can limit vapor transport away from the advancing ISV melt front. In addition, peak pressures inside the ceramic tube were significantly greater than those outside the tube, indicating the importance of horizontal vapor transport around the advancing ISV melt front.

Author Information

Farnsworth, RK
Idaho National Engineering Laboratory, EG&G Idaho, Inc., Office of Waste Technology Development, Idaho Falls, ID
Gardner, BM
Idaho National Engineering Laboratory, EG&G Idaho, Inc., Office of Waste Technology Development, Idaho Falls, ID
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Details
Developed by Committee: D34
Pages: 285–297
DOI: 10.1520/STP14120S
ISBN-EB: 978-0-8031-5318-9
ISBN-13: 978-0-8031-1443-2