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

Journal Article · Thu Mar 16 04:00:00 UTC 2017 · Separation Science and Technology

DOI: https://doi.org/10.1080/01496395.2017.1302952 · OSTI ID:1406492

Taylor-Pashow, Kathryn M. L. ^[1]; McCabe, Daniel J. ^[1]; Nash, Charles A. ^[1]

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1. Savannah River National Lab., Aiken, SC (United States)

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 ⁹⁹Tc. 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. As a result, research has shown stannous chloride to be effective, and this paper describes results of recent experiments performed to further mature the technology.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC09-08SR22470
• OSTI ID: 1406492
• Report Number(s): SRNL-STI--2016-00389
• Journal Information: Separation Science and Technology, Journal Name: Separation Science and Technology Journal Issue: 12 Vol. 53; ISSN 0149-6395
• Publisher: Taylor & FrancisCopyright Statement
• Country of Publication: United States
• Language: English