Evaluation of HWVP feed preparation chemistry for an NCAW simulant -- Fiscal year 1993: Effect of noble metals concentration on offgas generation and ammonia formation
The High-Level Waste Vitrification Program is developing technology for the Department of Energy to immobilize high-level and transuranic wastes as glass for permanent disposal. Pacific Northwest Laboratory (PNL) is conducting laboratory-scale melter feed preparation studies using a HWVP simulated waste slurry, Neutralized Current Acid Waste (NCAW). A FY 1993 laboratory-scale study focused on the effects of noble metals (Pd, Rh, and Ru) on feed preparation offgas generation and NH{sub 3} production. The noble metals catalyze H{sub 2} and NH{sub 3} production, which leads to safety concerns. The information gained from this study is intended to be used for technology development in pilot scale testing and design of the Hanford High-Level Waste Vitrification Facility. Six laboratory-scale feed preparation tests were performed as part of the FY 1993 testing activities using nonradioactive NCAW simulant. Tests were performed with 10%, 25%, 50% of nominal noble metals content. Also tested were 25% of the nominal Rh and a repeat of 25% nominal noble metals. The results of the test activities are described. 6 refs., 28 figs., 12 tabs.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 67452
- Report Number(s):
- PNL-10255; ON: DE95010687; TRN: 95:015214
- Resource Relation:
- Other Information: PBD: Mar 1995
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HANFORD RESERVATION
RADIOACTIVE WASTE FACILITIES
SAFETY ENGINEERING
HIGH-LEVEL RADIOACTIVE WASTES
VITRIFICATION
EXHAUST GASES
CHEMICAL COMPOSITION
HYDROGEN
CHEMICAL REACTION YIELD
AMMONIA
PALLADIUM
RHODIUM
RUTHENIUM
CATALYTIC EFFECTS
BENCH-SCALE EXPERIMENTS
CARBONATES
NITRITES
DECOMPOSITION
CARBON DIOXIDE
FORMIC ACID
EXPERIMENTAL DATA