Ruthenium volatility from the vitrification of melter feeds prepared using the Nitric Acid Flowsheet

Technical Report · Thu Oct 22 00:00:00 EDT 1992

DOI:https://doi.org/10.2172/6678448· OSTI ID:6678448

Hutson, N D

The present DWPF flowsheet calls for the chemical treatment of waste sludge with 90 wt% formic acid prior to the addition of the Precipitate Hydrolysis Aqueous (PHA) product. An alternative processing methodology, denoted the Nitric Acid Flowsheet'', has been proposed. In the application of this flowsheet, nitric acid would be used to neutralize sludge base components (hydroxides and carbonates) prior to the addition of late wash PHA. The late wash PHA will contain sufficient quantities of formic acid to adequately complete necessary reduction-oxidation (REDOX) reactions.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC09-89SR18035
• OSTI ID: 6678448
• Report Number(s): WSRC-TR-92-490; ON: DE93006871
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
HIGH-LEVEL RADIOACTIVE WASTES
VITRIFICATION
WASTE PROCESSING PLANTS
DESIGN
HYDROLYSIS
MELTING
NITRIC ACID
PH VALUE
RADIOACTIVE WASTE PROCESSING
REDOX REACTIONS
RUTHENIUM
RUTHENIUM OXIDES
SLUDGES
VOLATILITY
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
INORGANIC ACIDS
LYSIS
MANAGEMENT
MATERIALS
METALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PLATINUM METALS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTES
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
SOLVOLYSIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing