FRACTIONAL CRYSTALLIZATION OF HANFORD SINGLE SHELL TANK (SST) WASTES LABORATORY DEVELOPMENT
Laboratory studies demonstrate that fractional crystallization is a viable process for separating Hanford medium-curie waste into high-curie and low-curie fractions. The product salt from the crystallization process qualifies as low-curie feed to a supplemental treatment system (e.g., bulk vitrification). The high-curie raffinate is returned to the double-shell tank system, eventually to be sent as feed to the Waste Treatment and Immobilization Plant. Process flowsheet tests were designed with the aid of thermodynamic chemical modeling. Laboratory equipment design and test procedures were developed using simulated tank waste samples. Proof-of-concept flowsheet tests were carried out in a shielded hot cell using actual tank waste samples. Data from both simulated waste tests and actual tank waste tests demonstrate that the process exceeded all of the separation criteria established for the program.
- Research Organization:
- Hanford Site (HNF), Richland, WA (United States)
- Sponsoring Organization:
- USDOE - Office of Environmental Management (EM)
- DOE Contract Number:
- DE-AC27-99RL14047
- OSTI ID:
- 896212
- Report Number(s):
- RPP-31983-FP Rev 0; TRN: US0700748
- Resource Relation:
- Conference: WM07 WASTE MANAGEMENT SYMPOSIA INC 02/25/2007 THRU 03/01/2007 TUCSON AZ
- Country of Publication:
- United States
- Language:
- English
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