Effect of oxidation state and ionic strength on sorption of actinides (Th, U, Np, Am) to geologic media [Abstract and References Only]

Dittrich, Timothy M.; Richmann, Michael K.; Reed, Donald T.

Title: Effect of oxidation state and ionic strength on sorption of actinides (Th, U, Np, Am) to geologic media [Abstract and References Only]

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Abstract

The degree of conservatism in the estimated sorption partition coefficients (K_ds) used in a performance assessment model is being evaluated based on a complementary batch and column method. The main focus of this work is to investigate the role of ionic strength, solution chemistry, and oxidation state (III-VI) in actinide sorption to dolomite rock. Based on redox conditions and solution chemistry expected at the WIPP, possible actinide species include Pu(III), Pu(IV), U(IV), U(VI), Np(IV), Np(V), Am(III), and Th(IV).

Authors:

Dittrich, Timothy M. ^[1]; Richmann, Michael K. ^[1]; Reed, Donald T. ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Publication Date:: Fri Oct 30 00:00:00 EDT 2015

Research Org.:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE/LANL

OSTI Identifier:: 1225281

Report Number(s):: LA-UR-15-28499
TRN: US1700220

DOE Contract Number:: AC52-06NA25396

Resource Type:: Conference

Resource Relation:: Conference: 2016 ACS Spring Meeting, San Diego, CA (United States), 13 Mar 2016

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; SOLUTIONS; OXIDATION; LIMESTONE; SORPTION; WIPP; VALENCE; CHEMISTRY; EVALUATION; PARTITION; PERFORMANCE; THORIUM; URANIUM, NEPTUNIUM, AMERICIUM; ELECTROMOTIVE FORCE; Earth Sciences; dolomite, Culebra, reactive transport, ionic strength

Citation Formats


                    Dittrich, Timothy M., Richmann, Michael K., and Reed, Donald T. Effect of oxidation state and ionic strength on sorption of actinides (Th, U, Np, Am) to geologic media [Abstract and References Only].  United States: N. p., 2015. 
        Web.

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                    Dittrich, Timothy M., Richmann, Michael K., & Reed, Donald T. Effect of oxidation state and ionic strength on sorption of actinides (Th, U, Np, Am) to geologic media [Abstract and References Only].  United States.

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                    Dittrich, Timothy M., Richmann, Michael K., and Reed, Donald T. 2015.  
        "Effect of oxidation state and ionic strength on sorption of actinides (Th, U, Np, Am) to geologic media [Abstract and References Only]".  United States.  https://www.osti.gov/servlets/purl/1225281.

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@article{osti_1225281,

  title        = {Effect of oxidation state and ionic strength on sorption of actinides (Th, U, Np, Am) to geologic media [Abstract and References Only]},

  author       = {Dittrich, Timothy M. and Richmann, Michael K. and Reed, Donald T.},

  abstractNote = {The degree of conservatism in the estimated sorption partition coefficients (Kds) used in a performance assessment model is being evaluated based on a complementary batch and column method. The main focus of this work is to investigate the role of ionic strength, solution chemistry, and oxidation state (III-VI) in actinide sorption to dolomite rock. Based on redox conditions and solution chemistry expected at the WIPP, possible actinide species include Pu(III), Pu(IV), U(IV), U(VI), Np(IV), Np(V), Am(III), and Th(IV).},

  doi          = {},

  url          = {https://www.osti.gov/biblio/1225281},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Oct 30 00:00:00 EDT 2015},

  month        = {Fri Oct 30 00:00:00 EDT 2015}

}

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