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

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Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
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
Country of Publication:
United Kingdom

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. 2015. "Plutonium(IV) sorption to montmorillonite in the presence of organic matter". United Kingdom. doi:10.1016/j.jenvrad.2014.12.005.
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 = 2015,
month = 3

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
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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
  • Aroclor 1254 polychlorinated biphenyl (PCB) applied to untreated (1.4% organic matter) and H/sub 2/O/sub 2/-treated (0.2% organic matter) Lakeland sand at rates of 0, 50,100, 150, and 200 ppm caused significant reductions in redroot pigweed (Amaranthus retroflexus L.) growth at the high rates of application. Polychlorinated biphenyl decreased plant height in the H/sub 2/O/sub 2/-treated soil much more than in the untreated soil. A greater decrease in dry weight also resulted in the H/sub 2/O/sub 2/-treated soil, but only at the 200 ppm rate. In one study, soil was amended with montmorillonite clay and organic matter (peaty muck) at ratesmore » of 0, 2.5, 5.0, and 10.0% by weight and treated with 200 ppm PCB. The organic matter proved to be much more effective than montmorillonite in reducing PCB toxicity to pigweed at the lower rates of addition (2.5 and 5.0%), but no differences were noted between the two adsorbents at the 10% rate. Adsorption of /sup 14/C-labeled PCB closely resembling Aroclor 1254 by the untreated and H/sub 2/O/sub 2/-treated soils, montmorillonite clay, organic matter, and activated carbon was measured. The order of highest to lowest adsorption was as follows: activated carbon >> organic matter > montmorillonite clay > Lakeland sand > H/sub 2/O/sub 2/-treated Lakeland sand. These experiments suggest that organic matter content of a soil, and clay content to a lesser extent, are involved in reducing the availability of soil-applied PCB to pigweed. Differences in reduction of PCB toxicity to pigweed are explained by differences in adsorption by the adsorbents.« less
  • Subcritical water extraction was used as a tool to remove the carboxylic, aliphatic, and carbohydrate types of organic carbon from a humic soil. The rates and extents of soil organic carbon removal were quantified as functions of superheated water temperature, phase, and exposure time. The experimental data suggest that superheated water effects deoxygenation/aromatization reactions of soil organic matter that mimic those of geologically slow, natural diagenesis processes. Phenanthrene sorption and desorption equilibrium isotherms for the altered soils were measured. The sorption isotherms were characterized by increasing capacity and nonlinearity with increasing degree of polar functionality removal and simulated diagenesis ofmore » the soil organic matter.« less