Physical Properties of Vegetable Oil and Chlorinated Ethene Mixtures
Publication: Journal of Environmental Engineering
Volume 131, Issue 10
Abstract
Laboratory experiments were conducted to investigate the abiotic interactions of soybean oil (SoyOil) and chlorinated ethene (CE) nonaqueous phase liquids (NAPLs). The mixed NAPL density and interfacial tension behaved ideally, as predicted by the volume ratio. The mixed NAPL viscosity increased exponentially from that of the pure CE to that of pure SoyOil as the volume fraction increased. The measured contact angle was highly variable and was unpredictable as a function of the volume composition of the mixed NAPL. The physical property effects indicate that the mobilization of residual CE NAPLs because of SoyOil injection is unlikely. Equilibrium dissolution of CEs from the NAPL mixtures behaved linearly as a function of the mole fraction. Dissolved SoyOil in simulated groundwater enhanced the dissolution of trichloroethene (TCE) during flow tests, increasing the effluent TCE concentration from . The ready intermingling of the CE dense nonaqueous phase liquids (DNAPLs) and SoyOil indicate that such interactions may be significant at sites where vegetable oil is injected into DNAPL source areas to enhance in situ anaerobic bioremediation.
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Acknowledgments
Funding for this work was provided by the United States Air Force through a grant to Parsons Engineering. Analytic assistance by Dr. Dongping Dai is greatly appreciated.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 131 • Issue 10 • October 2005
Pages: 1447 - 1452
Copyright
© 2005 ASCE.
History
Received: Jun 24, 2004
Accepted: Feb 3, 2005
Published online: Oct 1, 2005
Published in print: Oct 2005
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