Synthetic waste chemical mechanism studies

Technical Report · Sat Oct 01 00:00:00 EDT 1994

OSTI ID:10194451

Ashby, E C; Annis, A; Barefield, E K ^[1]

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1. Georgia Inst. of Tech., Atlanta, GA (United States); and others

This research involved three main tasks: Kinetic studies of gas evolution and metal complexant decomposition in simulated waste media (SWM); Product identification from metal complexant decomposition in SWM; and Determination of the pathway by which N{sub 2}O, N{sub 2}, and NH{sub 3} are formed in SWM. Results are given on these 3 tasks under the following subtitles: 1. Kinetic studies--Reactions of HEDTA in SWM at different temperatures; Determination of the activation energies for gas formation in HEDTA decomposition under argon; Kinetics and mechanism of thermal degradation of glycolate in SWM; A possible explanation for the temperature dependence of gaseous product ratios for reactions of HEDTA and glycolate; Stoichiometry and kinetics of decomposition of nitrosamines; and Factors affecting the reactions of HEDTA, EDTA, and related compounds in SWM; 2. Product identification--Identification of HEDTA degradation products using {sup 13}C NMR spectroscopy; Identification of irradiated HEDTA degradation products using NMR; Degradation of model systems in SWM; and Role of Al in degradation of organic complexants; 3. Source of gases--Reactions in SY1-SIM-91B mixtures utilizing N-15 labelled reagents; Decomposition of nitrous oxide; Mechanistic pathways for formation of gases containing nitrogen from nitrite; and A redox analysis of HEDTA decomposition--How much ammonia might be formed?

• Research Organization: Westinghouse Hanford Co., Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-87RL10930
• OSTI ID: 10194451
• Report Number(s): WHC-EP--0823; ON: DE95002971; BR: 35AF11201/35AF11202
• Country of Publication: United States
• Language: English

Related Subjects

052002
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALUMINIUM
AMMONIA
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
EXPERIMENTAL DATA
HANFORD RESERVATION
HEDTA
NITROGEN
NITROUS OXIDE
PYROLYSIS
RADIOACTIVE WASTE STORAGE
RADIOACTIVE WASTES
SIMULATION
SYNTHESIS
TANKS
WASTE DISPOSAL AND STORAGE