Solvent extraction of polychlorinated organic compounds from porous materials
A method of reducing the level of hexachlorinated organic compounds selected from hexachloroethane, hexachlorobutadiene, hexachlorobenzene, or mixtures thereof to a non-hazardous level in a solid, porous DERAKANE vinyl ester resin, which has been previously used as the material of construction of a cell to produce chlorine, which vinyl ester resin was in contact with chlorine during chlorine manufacture is descried which comprises: (a) contacting the hexachlorinated compound-containing porous vinyl ester resin with an extraction solvent wherein the extraction solvent is selected from chloroform, carbon tetrachloride, trichlorethane, methyl chloroform, tetrachloroethane, perchloroethylene, benzene, toluene, xylene, acetone, methyl ethyl ketone, or mixtures thereof, at a temperature and for a time sufficient to remove the absorbed hexachlorinated organic compound; and (b) separating the hexachlorianated organic compound-containing extraction solvent and vinyl ester resin.
- Assignee:
- Dow Chemical Co., Midland, MI
- Patent Number(s):
- US 4758420
- OSTI ID:
- 6937870
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
ABSORPTION
ACETONE
ALKANES
ALKYLATED AROMATICS
AROMATICS
BENZENE
BUTADIENE
CARBON TETRACHLORIDE
CHEMICAL WASTES
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
DIENES
DISPERSIONS
ETHANE
EXTRACTION
HALOGENATED ALIPHATIC HYDROCARBONS
HAZARDOUS MATERIALS
HYDROCARBONS
KETONES
MANAGEMENT
MATERIALS
MIXTURES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
POLYENES
POLYMERS
POLYVINYLS
POROUS MATERIALS
PROCESS SOLUTIONS
PROCESSING
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SOLVENTS
TOLUENE
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
XYLENES