Tc removal from the waste treatment and immobilization plant low-activity waste vitrification off-gas recycle

Vitrification of Low Activity Waste in the Hanford Waste Treatment and Immobilization Plant generates a condensate stream from the off-gas processes. Components in this stream are partially volatile and accumulate to high concentrations through recycling, which impacts the waste glass loading and fa...

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Bibliographic Details
Published in:Separation science and technology 2018-08, Vol.53 (12), p.1925-1934
Main Authors: Taylor-Pashow, Kathryn M. L., McCabe, Daniel J., Nash, Charles A.
Format: Article
Language:English
Subjects:
Decontamination
Immobilization
MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
Radioisotopes
Removal
Rivers
Stannous chloride
technetium
Vitrification
Waste disposal
Waste treatment
WTP
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Summary:Vitrification of Low Activity Waste in the Hanford Waste Treatment and Immobilization Plant generates a condensate stream from the off-gas processes. Components in this stream are partially volatile and accumulate to high concentrations through recycling, which impacts the waste glass loading and facility throughput. The primary radionuclide that vaporizes and accumulates in the stream is 99 Tc. This program is investigating Tc removal via reductive precipitation with stannous chloride to examine the potential for diverting this stream to an alternate disposition path. Research has shown stannous chloride to be effective, and this paper describes results of recent experiments performed to further mature the technology.
ISSN:0149-6395
1520-5754
DOI:10.1080/01496395.2017.1302952