Filtration of a Hanford Site Tank 241-AN-102 Waste Sample with Alternate Sr/TRU Precipitation Conditions at Bench and Pilot Scales
In support of the design of the Hanford Waste Treatment Plant, the Savannah River Technology Center has conducted crossflow ultrafiltration tests on the bench scale with both a radioactive sample and simulants and at pilot scale with simulants. The waste tested was from Tank 241-AN-102, which underwent isotopic dilution with strontium nitrate to reduce the soluble (superscript 90)Sr concentration, and sodium permanganate precipitation to remove selected transuranic species. Experimental work validated the use of a simulant by comparison of bench scale simulant filtration data with radioactive filtration test data. Tests on a pilot scale were also conducted and showed that the filtration flux in the pilot unit was consistently lower than in the bench scale unit. An alternative precipitation method resulted in less filterable slurries. Several possible explanations for the differences in flux were proposed, including differences in particle size distribution and slurry viscosity (th e term viscosity will be used, although consistency is more correct for non-Newtonian fluids). The experimental data was also fit to an empirical model and several filtration models. The trends in the data generally followed the predictions of the filtration models. Differences in flux between the bench and pilot scales could not be accounted for by the calculated difference in the average wall shear stress.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC09-96SR18500
- OSTI ID:
- 824780
- Report Number(s):
- WSRC-MS-2003-00756, Rev. 0; TRN: US0402154
- Resource Relation:
- Conference: AlCHE Spring National Meeting, New Orleans, LA (US), 04/25/2004--04/29/2004; Other Information: PBD: 27 May 2004
- Country of Publication:
- United States
- Language:
- English
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