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Abiotic behavior of entrapped petroleum products in the subsurface during leaching
Year:
2002
Source of publication :
Chemosphere
Authors :
Gerstl, Zev
;
.
Volume :
49
Co-Authors:
Dror, I., Department of Environmental Science, Weizmann Institute of Science, P.O. Box 26, Rehovot 76100, Israel
Gerstl, Z., Inst. of Soil, Water/Environ. Sci., ARO - The Volcani Centre, P.O. Box 6, Bet Dagan 50250, Israel
Prost, R., INRA - Ctr. de Rech. de Versailles, Unite de Science du Sol, Route de Saint Cyr, 78026 Versailles Cedex, France
Yaron, B., Department of Environmental Science, Weizmann Institute of Science, P.O. Box 26, Rehovot 76100, Israel, INRA - Ctr. de Rech. de Versailles, Unite de Science du Sol, Route de Saint Cyr, 78026 Versailles Cedex, France
Facilitators :
From page:
1375
To page:
1388
(
Total pages:
14
)
Abstract:
Petroleum products are generally volatile hydrocarbon mixtures. These mixtures may contaminate land surfaces, the unsaturated zone and ground waters at numerous sites and thus represent a long-term source of environmental subsurface pollution. Based on laboratory and field evidence obtained by our research groups and others we emphasize in the present review paper the effect of leaching on the abiotic processes controlling the fate of volatile petroleum hydrocarbon mixtures (VPHMs) in the soil environment. The modification of petroleum hydrocarbon mixtures due to changes in the soil water content is considered the result of a "leaching phenomenon". The experimental evidence of VPHM behavior in the porous media is linked to four major processes: retention, redistribution and attenuation in the subsurface, and dissolution in the soil water. Once VPHMs reach the soil surface, their residual concentration and composition is influenced by the amount and quality of the leaching water. The transport and natural attenuation of the VPHMs in the unsaturated zone is affected by the amount and rate of leaching. Since VPHM are a mixture of volatile and non-volatile hydrocarbons whose components differ by several orders of magnitude in their vapor pressure and water solubility, their fates in the soil environment under leaching will be diverse too. This will influence the temporal concentrations of the VPHM components and their distributions with depth, as vapors, solutes, or water-immiscible solutions. Wetting the soil before or after the VPHMs reach it, differentially affects the abiotic processes governing petroleum products behavior into the porous media. © 2002 Elsevier Science Ltd. All rights reserved.
Note:
Related Files :
environmental monitoring
groundwater
Hydrocarbons
Natural attenuation
petroleum hydrocarbon
soil pollution
vadose zone
water analysis
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More details
DOI :
10.1016/S0045-6535(02)00529-5
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29133
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:44
Scientific Publication
Abiotic behavior of entrapped petroleum products in the subsurface during leaching
49
Dror, I., Department of Environmental Science, Weizmann Institute of Science, P.O. Box 26, Rehovot 76100, Israel
Gerstl, Z., Inst. of Soil, Water/Environ. Sci., ARO - The Volcani Centre, P.O. Box 6, Bet Dagan 50250, Israel
Prost, R., INRA - Ctr. de Rech. de Versailles, Unite de Science du Sol, Route de Saint Cyr, 78026 Versailles Cedex, France
Yaron, B., Department of Environmental Science, Weizmann Institute of Science, P.O. Box 26, Rehovot 76100, Israel, INRA - Ctr. de Rech. de Versailles, Unite de Science du Sol, Route de Saint Cyr, 78026 Versailles Cedex, France
Abiotic behavior of entrapped petroleum products in the subsurface during leaching
Petroleum products are generally volatile hydrocarbon mixtures. These mixtures may contaminate land surfaces, the unsaturated zone and ground waters at numerous sites and thus represent a long-term source of environmental subsurface pollution. Based on laboratory and field evidence obtained by our research groups and others we emphasize in the present review paper the effect of leaching on the abiotic processes controlling the fate of volatile petroleum hydrocarbon mixtures (VPHMs) in the soil environment. The modification of petroleum hydrocarbon mixtures due to changes in the soil water content is considered the result of a "leaching phenomenon". The experimental evidence of VPHM behavior in the porous media is linked to four major processes: retention, redistribution and attenuation in the subsurface, and dissolution in the soil water. Once VPHMs reach the soil surface, their residual concentration and composition is influenced by the amount and quality of the leaching water. The transport and natural attenuation of the VPHMs in the unsaturated zone is affected by the amount and rate of leaching. Since VPHM are a mixture of volatile and non-volatile hydrocarbons whose components differ by several orders of magnitude in their vapor pressure and water solubility, their fates in the soil environment under leaching will be diverse too. This will influence the temporal concentrations of the VPHM components and their distributions with depth, as vapors, solutes, or water-immiscible solutions. Wetting the soil before or after the VPHMs reach it, differentially affects the abiotic processes governing petroleum products behavior into the porous media. © 2002 Elsevier Science Ltd. All rights reserved.
Scientific Publication
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