Optimization of Cesium Removal from Hanford Envelope A Simulant with SuperLig 639 Ion Exchange Resin

King, W.D.

Savannah River Site (S.C.)

关键词: Removal;    Ion Exchange Materials;    Ion Exchange;    Radioactive Waste Processing;    12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities;   

DOI  :  10.2172/759135
RP-ID  :  BNF-003-98-0169
RP-ID  :  AC09-96SR18500
RP-ID  :  759135

美国|英语

来源: UNT Digital Library

【 摘 要 】

Hanford RadioactiveWaste materials have been categorized into four envelopes labeled A through D as specified in the Tank Waste Remediation Contract between BNFL and DOE. 1 Envelopes A, B and C contain only solubilized species and are specified as Low-Activity Waste (LAW). Each envelope is defined based on compositional maximums of chemical and radioactive constituents. Envelopes A and B contain low concentrations of organic species and the primary form of technetium is pertechnetate (TcO4-). Envelope C contains higher levels of organic species and technetium which is primarily in the nonpertechnetate form (presumably complexed TcO2). Envelope D is sludge which has been separated from the supernate and is referred to as High Activity Waste. The current plant design utilizes SuperLig ion exchange resins to remove cesium and technetium (the primary radioactive constituents) from the Hanford LAW. The process is designed to produce a decontaminated waste stream and a concentrated eluate waste stream for vitrification into low and high activity glasses, respectively.