Reillex{trademark}-HPQ anion exchange column chromatography studies of pertechnetate ion in DSSF-7 simulant on 1x20 inch columns

Conference · Tue Oct 01 04:00:00 EDT 1996

OSTI ID:370555

Schroeder, N C; Radzinski, S D; Ball, J R ^[1]

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1. Los Alamos National Lab., NM (United States); and others

Technetium-99 is a major fission product resulting from the fission of plutonium or uranium. An estimated 2000 Kg of technetium is being stored in the Hanford waste tanks. As TcO{sub 4}{sup -}, technetium is a very mobile species in the environment This characteristic, along with its long half-life, 213,000 years, causes technetium to be a major contributor to the long-term risk associated with storage of low level waste (LLW) forms. One option for mitigating this hazard is to separate technetium, from LLW streams and vitrify it with the high level waste (HLW) components. Anion exchange is the baseline technology for technetium separations. Technetium is successfully partitioned from DSSF waste simulant with 1 x 20 inches columns of Reillex{trademark}-HPQ resin. Breakthrough data is linear for flow rates ranging from 1-15 cm/min (5-75 ml/min). Technetium is eluted within two column volumes with a Sn(II)/ethylenediamine eluent. Resin columns can be recycled at least six times.

• OSTI ID: 370555
• Report Number(s): CONF-960376--
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
ION EXCHANGE
PERTECHNETATES
RADIOACTIVE WASTE PROCESSING
RESINS
SEPARATION PROCESSES
TECHNETIUM 99
TIN COMPOUNDS