RESULTS OF COPPER CATALYZED PEROXIDE OXIDATION (CCPO) OF TANK 48H SIMULANTS

Peters, T. ; Pareizs, J. ; Newell, J. ; Fondeur, F. ; Nash, C. ; White, T. ; Fink, S.

关键词: ACIDIFICATION;    CATALYSTS;    COPPER;    HYDROGEN PEROXIDE;    MODIFICATIONS;    OXIDATION;    PEROXIDES;    PROCESSING;    REACTION KINETICS;    SAVANNAH RIVER PLANT;    SLURRIES;    TANKS;    TESTING;    WASTES;   

DOI  :  10.2172/1048649
RP-ID  :  SRNL-STI-2012-00342
PID  :  OSTI ID: 1048649
Others  :  TRN: US201217%%332

学科分类：环境科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Savannah River National Laboratory (SRNL) performed a series of laboratory-scale experiments that examined copper-catalyzed hydrogen peroxide (H{sub 2}O{sub 2}) aided destruction of organic components, most notably tetraphenylborate (TPB), in Tank 48H simulant slurries. The experiments were designed with an expectation of conducting the process within existing vessels of Building 241-96H with minimal modifications to the existing equipment. Results of the experiments indicate that TPB destruction levels exceeding 99.9% are achievable, dependent on the reaction conditions. The following observations were made with respect to the major processing variables investigated. A lower reaction pH provides faster reaction rates (pH 7 > pH 9 > pH 11); however, pH 9 reactions provide the least quantity of organic residual compounds within the limits of species analyzed. Higher temperatures lead to faster reaction rates and smaller quantities of organic residual compounds. Higher concentrations of the copper catalyst provide faster reaction rates, but the highest copper concentration (500 mg/L) also resulted in the second highest quantity of organic residual compounds. Faster rates of H{sub 2}O{sub 2} addition lead to faster reaction rates and lower quantities of organic residual compounds. Testing with simulated slurries continues. Current testing is examining lower copper concentrations, refined peroxide addition rates, and alternate acidification methods. A revision of this report will provide updated findings with emphasis on defining recommended conditions for similar tests with actual waste samples.