TRUEX Radiolysis Testing Using the INL Radiolysis Test Loop: FY-2012 Status Report

Peterman, Dean R. ; Olson, Lonnie G. ; Tillotson, Richard D. ; McDowell, Rocklan G. ; Law, Jack D.

Idaho National Laboratory

关键词: Test Loop;    Degradation;    Radiolysis;    Truex;    38 Radiation Chemistry, Radiochemistry, And Nuclear Chemistry Degradation;   

DOI  :  10.2172/1076536
RP-ID  :  INL/EXT-12-27285
RP-ID  :  DE-AC07-05ID14517
RP-ID  :  1076536

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来源: UNT Digital Library

【 摘 要 】

The INL radiolysis test loop has been used to evaluate the affect of radiolytic degradation upon the efficacy of the strip section of the TRUEX flowsheet for the recovery of trivalent actinides and lanthanides from acidic solution. The nominal composition of the TRUEX solvent used in this study is 0.2 M CMPO and 1.4 M TBP dissolved in n-dodecane and the nominal composition of the TRUEX strip solution is 1.5 M lactic acid and 0.050 M diethylenetriaminepentaacetic acid. Gamma irradiation of a mixture of TRUEX process solvent and stripping solution in the test loop does not adversely impact flowsheet performance as measured by stripping americium ratios. The observed increase in americium stripping distribution ratios with increasing absorbed dose indicates the radiolytic production of organic soluble degradation compounds.