Monosodium titanate (MST) is the baseline material for the removal of strontium and actinides from High Level Waste (HLW) at the Savannah River Site (SRS). MST is a spherical amorphous solid, with a particle size of approximately 1 � 10 microns. The typical process involves a batch contact of the MST with HLW, followed by filtration to remove the loaded MST solids. Filtration is often the rate limiting step in the process, and filtration could be improved with a larger particle size sorbent. In addition, movement from a batch contact method to a column deployment would increase the efficiency of the process; however, the relatively small particle size of MST precludes its use in a column configuration without large presssure drop. This talk will discuss attempts at modifying the MST synthesis to produce larger particle sizes for 1) improved filtration and 2) column deployment of the material. Effects of the increasing particle size on the sorption kinetics will also be discussed.

Large particle titanate sorbents for treatment of high level waste

248th National Meeting (2014)

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