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A Review of Centrifugal Testing of Gasoline Contamination and Remediation

Leaking underground storage tanks (USTs) containing gasoline represent a significant public health hazard. Virtually undetectable to the UST owner, gasoline leaks can contaminate groundwater supplies. In order to develop remediation plans one must know the extent of gasoline contamination. Centrifug...

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Detalles Bibliográficos
Autores principales: Meegoda, Jay N., Hu, Liming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3166756/
https://www.ncbi.nlm.nih.gov/pubmed/21909320
http://dx.doi.org/10.3390/ijerph8083496
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author Meegoda, Jay N.
Hu, Liming
author_facet Meegoda, Jay N.
Hu, Liming
author_sort Meegoda, Jay N.
collection PubMed
description Leaking underground storage tanks (USTs) containing gasoline represent a significant public health hazard. Virtually undetectable to the UST owner, gasoline leaks can contaminate groundwater supplies. In order to develop remediation plans one must know the extent of gasoline contamination. Centrifugal simulations showed that in silty and sandy soils gasoline moved due to the physical process of advection and was retained as a pool of free products above the water table. However, in clayey soils there was a limited leak with lateral spreading and without pooling of free products above the water table. Amount leaked depends on both the type of soil underneath the USTs and the amount of corrosion. The soil vapor extraction (SVE) technology seems to be an effective method to remove contaminants from above the water table in contaminated sites. In-situ air sparging (IAS) is a groundwater remediation technology for contamination below the water table, which involves the injection of air under pressure into a well installed into the saturated zone. However, current state of the art is not adequate to develop a design guide for site implementation. New information is being currently generated by both centrifugal tests as well as theoretical models to develop a design guide for IAS. The petroleum contaminated soils excavated from leaking UST sites can be used for construction of highway pavements, specifically as sub-base material or blended and used as hot or cold mix asphalt concrete. Cost analysis shows that 5% petroleum contaminated soils is included in hot or cold mix asphalt concrete can save US$5.00 production cost per ton of asphalt produced.
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spelling pubmed-31667562011-09-09 A Review of Centrifugal Testing of Gasoline Contamination and Remediation Meegoda, Jay N. Hu, Liming Int J Environ Res Public Health Review Leaking underground storage tanks (USTs) containing gasoline represent a significant public health hazard. Virtually undetectable to the UST owner, gasoline leaks can contaminate groundwater supplies. In order to develop remediation plans one must know the extent of gasoline contamination. Centrifugal simulations showed that in silty and sandy soils gasoline moved due to the physical process of advection and was retained as a pool of free products above the water table. However, in clayey soils there was a limited leak with lateral spreading and without pooling of free products above the water table. Amount leaked depends on both the type of soil underneath the USTs and the amount of corrosion. The soil vapor extraction (SVE) technology seems to be an effective method to remove contaminants from above the water table in contaminated sites. In-situ air sparging (IAS) is a groundwater remediation technology for contamination below the water table, which involves the injection of air under pressure into a well installed into the saturated zone. However, current state of the art is not adequate to develop a design guide for site implementation. New information is being currently generated by both centrifugal tests as well as theoretical models to develop a design guide for IAS. The petroleum contaminated soils excavated from leaking UST sites can be used for construction of highway pavements, specifically as sub-base material or blended and used as hot or cold mix asphalt concrete. Cost analysis shows that 5% petroleum contaminated soils is included in hot or cold mix asphalt concrete can save US$5.00 production cost per ton of asphalt produced. Molecular Diversity Preservation International (MDPI) 2011-08 2011-08-24 /pmc/articles/PMC3166756/ /pubmed/21909320 http://dx.doi.org/10.3390/ijerph8083496 Text en © 2011 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0 This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Review
Meegoda, Jay N.
Hu, Liming
A Review of Centrifugal Testing of Gasoline Contamination and Remediation
title A Review of Centrifugal Testing of Gasoline Contamination and Remediation
title_full A Review of Centrifugal Testing of Gasoline Contamination and Remediation
title_fullStr A Review of Centrifugal Testing of Gasoline Contamination and Remediation
title_full_unstemmed A Review of Centrifugal Testing of Gasoline Contamination and Remediation
title_short A Review of Centrifugal Testing of Gasoline Contamination and Remediation
title_sort review of centrifugal testing of gasoline contamination and remediation
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3166756/
https://www.ncbi.nlm.nih.gov/pubmed/21909320
http://dx.doi.org/10.3390/ijerph8083496
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