Results of Supplemental MST Studies

Peters, T. B.; Hobbs, D David; Fink, Simon

doi:10.2172/891660

Cited by 6 publications

(5 citation statements)

References 7 publications

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“…Table 4 provides a summary of the measured DF values for this test and those previously reported for the baseline MST. [12] The measured DF values follow the expected trends. As previously observed, the mMST exhibits greater strontium and plutonium removal than the baseline MST.…”

Section: Reuse and Double Strike Testingsupporting

confidence: 63%

Development of an Improved Titanate-Based Sorbent for Strontium and Actinide Separations under Strongly Alkaline Conditions

Hobbs

Peters

Taylor-Pashow

et al. 2010

Separation Science and Technology

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High-level nuclear waste produced from fuel reprocessing operations at the Savannah River Site (SRS) requires pretreatment to remove 134,137 Cs, 90 Sr, and alpha-emitting radionuclides (i.e., actinides) prior to disposal onsite as low level waste. Separation processes at SRS include the sorption of 90 Sr and alpha-emitting radionuclides onto monosodium titanate (MST) and caustic side solvent extraction of 137 Cs. The MST and separated 137 Cs is encapsulated along with the sludge fraction of high-level waste (HLW) into a borosilicate glass waste form for eventual entombment at a federal repository. The predominant alpha-emitting radionuclides in the highly alkaline waste solutions include plutonium isotopes 238 Pu, 239 Pu, and 240 Pu; 237 Np; and uranium isotopes, 235 U and 238 U. This paper describes recent results evaluating the performance of an improved sodium titanate material that exhibits increased removal kinetics and capacity for 90 Sr and alpha-emitting radionuclides compared to the current baseline material, MST.

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Section: Reuse and Double Strike Testingsupporting

confidence: 63%

Development of an Improved Titanate-Based Sorbent for Strontium and Actinide Separations under Strongly Alkaline Conditions

Hobbs

Peters

Taylor-Pashow

et al. 2010

Separation Science and Technology

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show abstract

“…The slight decline in strontium DF from 12 to 24 hours seems to be a real effect, and is behavior SRNL has observed before. 30…”

Section: Strontium Resultsmentioning

confidence: 99%

ISDP salt batch #2 supernate qualification

Peters

Nash

Fink

2009

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“…The 14 wt % sorption was selected to match the maximum strontium sorption measured during SRNL testing with MST or mMST. 5,6 This high level of sorbed strontium used a level greater than the level of sorbed strontium and actinides achieved in actual processing in an effort to make up for not having actinides.…”

Section: Preparation Of Mixturesmentioning

confidence: 99%