Influence of flow regime on U(VI) sorption kinetics in fine sediments at the Hanford site, Washington, USA

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dc.contributorTick, Geoffrey R.
dc.contributorDonahoe, Rona Jean
dc.contributorLiu, Chongxuan
dc.contributor.advisorZheng, Chunmiao
dc.contributor.authorMoser, Jessa V.
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2017-03-01T16:24:27Z
dc.date.available2017-03-01T16:24:27Z
dc.date.issued2012
dc.descriptionElectronic Thesis or Dissertationen_US
dc.description.abstractThe effect of flow rate on U(VI) sorption kinetics was investigated by a series of column tests using the reactive mass fraction (<2mm) of sediments from the 300 Area in Hanford, WA. Three sets of constant flow rates subject to multiple stop flow events were employed to obtain U(VI) breakthrough curves at the column outlet. A lognormal distributed multi-rate surface complexation model was used to match the experimental breakthrough curves and calibrate the parameters of the multi-rate distribution. The results from the column tests clearly show that the mean of the lognormal distributed sorption rate constants increase with the flow rate, while the standard deviation of the lognormal distributions decreases with the flow rate. This finding is the first empirical evidence for the flow rate dependence of the multi-rate sorption kinetics and is thus of fundamental importance for future efforts to further improve the predictive modeling and remediation of U contamination.en_US
dc.format.extent73 p.
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.otheru0015_0000001_0000823
dc.identifier.otherMoser_alatus_0004M_10996
dc.identifier.urihttps://ir.ua.edu/handle/123456789/1327
dc.languageEnglish
dc.language.isoen_US
dc.publisherUniversity of Alabama Libraries
dc.relation.hasversionborn digital
dc.relation.ispartofThe University of Alabama Electronic Theses and Dissertations
dc.relation.ispartofThe University of Alabama Libraries Digital Collections
dc.rightsAll rights reserved by the author unless otherwise indicated.en_US
dc.subjectHydrologic sciences
dc.subjectGeochemistry
dc.subjectEnvironmental science
dc.titleInfluence of flow regime on U(VI) sorption kinetics in fine sediments at the Hanford site, Washington, USAen_US
dc.typethesis
dc.typetext
etdms.degree.departmentUniversity of Alabama. Department of Geological Sciences
etdms.degree.disciplineGeology
etdms.degree.grantorThe University of Alabama
etdms.degree.levelmaster's
etdms.degree.nameM.S.
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