Disposition of Tank 48H Organics By Fluidized Bed Steam Reforming (FBSR) (U)
An In Tank Processing (ITP) technology was developed at the Savannah River Site to remove Cs-137 from high-level waste supernates. During the ITP process monosodium titanate and sodium tetraphenylborate (NaTPB) were added to the salt supernate to adsorb Sr-90/Pu-238 and precipitate Cs-137 as CsTPB, respectively. This process was demonstrated at the SRS in 1983. The demonstration produced 53,000 gallons of 2.5 weight per cent Cs rich precipitate containing TPB, which was later washed and diluted to 250,000 gallons. This material is currently stored in SRS tanks. The washed precipitate was to ultimately be disposed in borosilicate glass in the Defense Waste Processing Facility. Due to safety concerns the ITP process was abandoned in 1998, and new technologies are being researched for Cs-137 removal. In order to make space in the SRS Tank farm, the tank waste must be removed. Therefore, the tank waste must be processed to reduce or eliminate levels of nitrates, nitrites, and sodium tetra phenylborate (NaTPB) in order to reduce impacts of these species before it is vitrified at the DWPF. Fluidized Bed Steam Reforming (FBSR) is being considered as a candidate technology for destroying the nitrates and the NaTPB prior to melting. The purposes of the current study, organic destruction and downstream processing of T48H waste slurry were fulfilled. TPB was destroyed in all 19 samples tested with the simulated FBSR process at operational temperatures 650-725 degrees Celsius.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC09-96SR18500
- OSTI ID:
- 828471
- Report Number(s):
- WSRC-TR-2003-00352, Rev. 1; TRN: US0406891
- Resource Relation:
- Other Information: PBD: 29 Mar 2004; PBD: 29 Mar 2004
- Country of Publication:
- United States
- Language:
- English
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FLUIDIZED BED STEAM REFORMING TECHNOLOGY FOR ORGANIC AND NITRATE SALT SUPERNATE
Disposition of Tank 48H Organics by Fluidized Bed Steam Reforming (FBSR)
Related Subjects
BOROSILICATE GLASS
FLUIDIZED BEDS
MELTING
NITRATES
NITRITES
PROCESSING
REMOVAL
SAFETY
SODIUM
STEAM
STORAGE FACILITIES
TANKS
TITANATES
WASTE PROCESSING
WASTES
TANK 48H
TETRAPHENYLBORATE
ORGANIC DESTRUCTION
STEAM REFORMING