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

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dc.contributor Tick, Geoffrey R.
dc.contributor Donahoe, Rona Jean
dc.contributor Liu, Chongxuan
dc.contributor.advisor Zheng, Chunmiao Moser, Jessa V. 2017-03-01T16:24:27Z 2017-03-01T16:24:27Z 2012
dc.identifier.other u0015_0000001_0000823
dc.identifier.other Moser_alatus_0004M_10996
dc.description Electronic Thesis or Dissertation
dc.description.abstract The 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.
dc.format.extent 73 p.
dc.format.medium electronic
dc.format.mimetype application/pdf
dc.language English
dc.language.iso en_US
dc.publisher University of Alabama Libraries
dc.relation.ispartof The University of Alabama Electronic Theses and Dissertations
dc.relation.ispartof The University of Alabama Libraries Digital Collections
dc.relation.hasversion born digital
dc.rights All rights reserved by the author unless otherwise indicated.
dc.subject.other Hydrologic sciences
dc.subject.other Geochemistry
dc.subject.other Environmental science
dc.title Influence of flow regime on U(VI) sorption kinetics in fine sediments at the Hanford site, Washington, USA
dc.type thesis
dc.type text University of Alabama. Dept. of Geological Sciences Geology The University of Alabama master's M.S.

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