An evaluation of foaming potential in the IDMS melter. [Neutralization of waste sludge base components (hydroxides and carbonates) with nitric acid]
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. The use of this flowsheet may result in a change in the nominal concentrations of two of the major REDOX reaction participants: formate (HCOO[sup minus]) and nitrate (NO[sub 3][sup minus]).
- 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:
- 6808755
- Report Number(s):
- WSRC-TR-92-491; ON: DE93006246
- Country of Publication:
- United States
- Language:
- English
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An evaluation of mercury removal in the IDMS using the nitric acid flowsheet
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Related Subjects
HIGH-LEVEL RADIOACTIVE WASTES
VITRIFICATION
NITRIC ACID
CHEMICAL REACTIONS
SAVANNAH RIVER PLANT
RADIOACTIVE WASTE PROCESSING
SLUDGES
CERAMIC MELTERS
FLOWSHEETS
FOAMS
FORMIC ACID
REDOX REACTIONS
CARBOXYLIC ACIDS
COLLOIDS
DIAGRAMS
DISPERSIONS
ELECTRIC FURNACES
FURNACES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MANAGEMENT
MATERIALS
MONOCARBOXYLIC ACIDS
NATIONAL ORGANIZATIONS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTES
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing