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Title: Prediction Models for Plutonium, Strontium, Uranium and Neptunium Loading onto Monosodium Titanate (MST)

Abstract

The DA isotherm parameters for U, Pu, Sr and Np have been updated to include additional data obtained since the original derivation. The DA isotherms were modified to include a kinetic function derived by Rahn to describe sorbate loading from the beginning of sorption up to equilibrium. The final functions describe both kinetic and thermodynamic sorption. We selected the Rahn function to describe radionuclide sorption because it originates from diffusion and absorption controlled sorption. An investigation of the thermal behavior of radionuclide sorption on MST as shown by this data revealed the sorption process is diffusion (or transport) controlled (in solution). Transport in solution can in theory be accelerated by vigorous mixing but the range of available mixing speed in the facility design will probably not be sufficient to markedly increase radionuclide sorption rate on MST from diffusion-controlled sorption. The laboratory studies included mixing energies hydraulically-scaled to match those of the Actinide Removal Process and these likely approximate the range of energies available in the Salt Waste Processing Facility.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC
Sponsoring Org.:
USDOE
OSTI Identifier:
881516
Report Number(s):
WSRC-TR-2004-00608
TRN: US0603117
DOE Contract Number:  
DE-AC09-96SR18500
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ADSORPTION ISOTHERMS; KINETICS; NEPTUNIUM; PLUTONIUM; STRONTIUM; THERMODYNAMICS; SODIUM COMPOUNDS; TITANATES; URANIUM; RADIOACTIVE WASTE PROCESSING

Citation Formats

Fondeur, F F, Hobbs, D T, Barnes, M J, Peters, T B, and Fink, S D. Prediction Models for Plutonium, Strontium, Uranium and Neptunium Loading onto Monosodium Titanate (MST). United States: N. p., 2005. Web. doi:10.2172/881516.
Fondeur, F F, Hobbs, D T, Barnes, M J, Peters, T B, & Fink, S D. Prediction Models for Plutonium, Strontium, Uranium and Neptunium Loading onto Monosodium Titanate (MST). United States. doi:10.2172/881516.
Fondeur, F F, Hobbs, D T, Barnes, M J, Peters, T B, and Fink, S D. Mon . "Prediction Models for Plutonium, Strontium, Uranium and Neptunium Loading onto Monosodium Titanate (MST)". United States. doi:10.2172/881516. https://www.osti.gov/servlets/purl/881516.
@article{osti_881516,
title = {Prediction Models for Plutonium, Strontium, Uranium and Neptunium Loading onto Monosodium Titanate (MST)},
author = {Fondeur, F F and Hobbs, D T and Barnes, M J and Peters, T B and Fink, S D},
abstractNote = {The DA isotherm parameters for U, Pu, Sr and Np have been updated to include additional data obtained since the original derivation. The DA isotherms were modified to include a kinetic function derived by Rahn to describe sorbate loading from the beginning of sorption up to equilibrium. The final functions describe both kinetic and thermodynamic sorption. We selected the Rahn function to describe radionuclide sorption because it originates from diffusion and absorption controlled sorption. An investigation of the thermal behavior of radionuclide sorption on MST as shown by this data revealed the sorption process is diffusion (or transport) controlled (in solution). Transport in solution can in theory be accelerated by vigorous mixing but the range of available mixing speed in the facility design will probably not be sufficient to markedly increase radionuclide sorption rate on MST from diffusion-controlled sorption. The laboratory studies included mixing energies hydraulically-scaled to match those of the Actinide Removal Process and these likely approximate the range of energies available in the Salt Waste Processing Facility.},
doi = {10.2172/881516},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {7}
}

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