The use of supercritical carbon dioxide for contaminant removal from solid waste

Conference · Wed Jun 01 04:00:00 EDT 1994

OSTI ID:10158213

Adkins, C L.J.; Russick, E M ^[1]; Smith, H M; Olson, R B ^[2]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. Allied-Signal Aerospace Co., Kansas City, MO (United States). Kansas City Div.

Supercritical carbon dioxide is being explored as a waste minimization technique for separating oils, greases and solvents from solid waste. The containments are dissolved into the supercritical fluid and precipitated out upon depressurization. The carbon dioxide solvent can then be recycled for continued use. Definitions of the temperature, pressure, flowrate and potential co-solvents are required to establish the optimum conditions for hazardous contaminant removal. Excellent extractive capability for common manufacturing oils, greases, and solvents has been observed in both supercritical and liquid carbon dioxide. Solubility measurements are being used to better understand the extraction process, and to determine if the minimum solubility required by federal regulations is met.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States); Allied-Signal Aerospace Co., Kansas City, MO (United States). Kansas City Div.
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000; AC04-76DP00613
• OSTI ID: 10158213
• Report Number(s): SAND--94-1444C; KCP--613-5462; CONF-9406181--2; ON: DE94013342; BR: GB0103012
• Country of Publication: United States
• Language: English

Related Subjects

052001
054000
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
54 ENVIRONMENTAL SCIENCES
540000
CARBON DIOXIDE
ENVIRONMENTAL SCIENCES
HAZARDOUS MATERIALS
HEALTH AND SAFETY
SEPARATION PROCESSES
SOLIDS
SOLUBILITY
SOLVENTS
SUPERCRITICAL GAS EXTRACTION
WASTE DISPOSAL
WASTE PROCESSING