Sorption and desorption of benzene and para-xylene on an unsaturated desert soil

Persistent Link:
http://hdl.handle.net/10150/291366
Title:
Sorption and desorption of benzene and para-xylene on an unsaturated desert soil
Author:
Davis, James Hal, 1956-
Issue Date:
1989
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
A series of bench-scale experiments was carried out to determine the rate and efficiency with which benzene and p-xylene, components of gasoline, could be removed from an unsaturated soil by air stripping. Glass columns, 30 cm in length, were packed with soil and wetted to volumetric moisture contents of 10 and 18 percent. Air saturated with one of the volatile organic compounds (VOCs) was used to load the column. Clean air was used to strip the contaminant from the soil. Benzene and p-xylene concentrations in the soil water and air were reduced four orders of magnitude after a few hours (2-8) of stripping. Benzene was removed faster than p-xylene. Air flow was the rate-limiting step early in the stripping, however slow desorption from the soil became rate-limiting as the stripping progressed. As moisture content increased the rate of removal of both contaminants decreased.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Groundwater -- Pollution.; Benzene -- Absorption and adsorption.; Xylene -- Absorption and adsorption.; Groundwater -- Arizona -- Quality.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Hydrology and Water Resources
Degree Grantor:
University of Arizona
Advisor:
Conklin, Martha

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleSorption and desorption of benzene and para-xylene on an unsaturated desert soilen_US
dc.creatorDavis, James Hal, 1956-en_US
dc.contributor.authorDavis, James Hal, 1956-en_US
dc.date.issued1989en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractA series of bench-scale experiments was carried out to determine the rate and efficiency with which benzene and p-xylene, components of gasoline, could be removed from an unsaturated soil by air stripping. Glass columns, 30 cm in length, were packed with soil and wetted to volumetric moisture contents of 10 and 18 percent. Air saturated with one of the volatile organic compounds (VOCs) was used to load the column. Clean air was used to strip the contaminant from the soil. Benzene and p-xylene concentrations in the soil water and air were reduced four orders of magnitude after a few hours (2-8) of stripping. Benzene was removed faster than p-xylene. Air flow was the rate-limiting step early in the stripping, however slow desorption from the soil became rate-limiting as the stripping progressed. As moisture content increased the rate of removal of both contaminants decreased.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectGroundwater -- Pollution.en_US
dc.subjectBenzene -- Absorption and adsorption.en_US
dc.subjectXylene -- Absorption and adsorption.en_US
dc.subjectGroundwater -- Arizona -- Quality.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorConklin, Marthaen_US
dc.identifier.proquest1336340en_US
dc.identifier.oclc22478050en_US
dc.identifier.bibrecord.b17437830en_US
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