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Title: Plutonium(IV) sorption to montmorillonite in the presence of organic matter

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1249602
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Journal of Environmental Radioactivity
Additional Journal Information:
Journal Volume: 141; Journal Issue: C; Related Information: CHORUS Timestamp: 2016-09-04 23:14:00; Journal ID: ISSN 0265-931X
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Boggs, Mark A., Dai, Zurong, Kersting, Annie B., and Zavarin, Mavrik. Plutonium(IV) sorption to montmorillonite in the presence of organic matter. United Kingdom: N. p., 2015. Web. doi:10.1016/j.jenvrad.2014.12.005.
Boggs, Mark A., Dai, Zurong, Kersting, Annie B., & Zavarin, Mavrik. Plutonium(IV) sorption to montmorillonite in the presence of organic matter. United Kingdom. doi:10.1016/j.jenvrad.2014.12.005.
Boggs, Mark A., Dai, Zurong, Kersting, Annie B., and Zavarin, Mavrik. Sun . "Plutonium(IV) sorption to montmorillonite in the presence of organic matter". United Kingdom. doi:10.1016/j.jenvrad.2014.12.005.
@article{osti_1249602,
title = {Plutonium(IV) sorption to montmorillonite in the presence of organic matter},
author = {Boggs, Mark A. and Dai, Zurong and Kersting, Annie B. and Zavarin, Mavrik},
abstractNote = {},
doi = {10.1016/j.jenvrad.2014.12.005},
journal = {Journal of Environmental Radioactivity},
number = C,
volume = 141,
place = {United Kingdom},
year = {Sun Mar 01 00:00:00 EST 2015},
month = {Sun Mar 01 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.jenvrad.2014.12.005

Citation Metrics:
Cited by: 5works
Citation information provided by
Web of Science

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  • For this research, the effect of citric acid (CA), desferrioxamine B (DFOB), fulvic acid (FA), and humic acid (HA) on plutonium (Pu) sorption to goethite was studied as a function of organic carbon concentration and pH using batch sorption experiments at 5 mg C·L –1 and 50 mg C·L –1 natural organic matter (NOM), 10 –9–10 –10 M 238Pu, and 0.1 g·L –1 goethite concentrations, at pH 3, 5, 7, and 9. Low sorption of ligands coupled with strong Pu complexation decreased Pu sorption at pH 5 and 7, relative to a ligand-free system. Conversely, CA, FA, and HA increasedmore » Pu sorption to goethite at pH 3, suggesting ternary complex formation or, in the case of humic acid, incorporation into HA aggregates. Mechanisms for ternary complex formation were characterized by Fourier transform infrared spectroscopy in the absence of Pu. CA and FA demonstrated clear surface interactions at pH 3, HA appeared unchanged suggesting HA aggregates had formed, and no DFOB interactions were observed. Plutonium sorption decreased in the presence of DFOB (relative to a ligand free system) at all pH values examined. Thus, DFOB does not appear to facilitate formation of ternary Pu-DFOB-goethite complexes. At pH 9, Pu sorption in the presence of all NOM increased relative to pH 5 and 7; speciation models attributed this to Pu(IV) hydrolysis competing with ligand complexation, increasing sorption. In conclusion, the results indicate that in simple Pu-NOM-goethite ternary batch systems, NOM will decrease Pu sorption to goethite at all but particularly low pH conditions.« less
  • The adsorption of dissolved organic carbon extracted from sewage sludge (SSDOC) and its complexes with Co, Pb, and Cd by montmorillonite and kaolinite was measured at 283, 298, and 308 K. Experiments were conducted at 2 g L{sup -3} clay suspension concentration in an ionic background of 50 mM NaClO{sup 4}. Sufficient metal ion concentrations were present to saturate the clays (92 and 5 cmol(c) kg{sup -1} for montmorillonite and kaolinite, respectively). The pH value of the suspensions was adjusted to 5.5 prior to initiation of the adsorption experiments. Kinetic studies conducted under aseptic conditions indicated that within 2 hmore » the adsorption of the SSDOC by the days reached an equilibrium value.« less