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
- Resource Relation:
- Patent File Date: Filed date 14 Jul 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHEMICAL WASTES
WASTE PROCESSING
ORGANIC CHLORINE COMPOUNDS
SOLVENT EXTRACTION
ABSORPTION
ACETONE
BENZENE
BUTADIENE
CARBON TETRACHLORIDE
CHLOROFORM
ETHANE
HAZARDOUS MATERIALS
KETONES
MIXTURES
POLYVINYLS
POROUS MATERIALS
PROCESS SOLUTIONS
SOLVENTS
TOLUENE
XYLENES
ALKANES
ALKYLATED AROMATICS
AROMATICS
CHLORINATED ALIPHATIC HYDROCARBONS
DIENES
DISPERSIONS
EXTRACTION
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
MANAGEMENT
MATERIALS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
POLYENES
POLYMERS
PROCESSING
SEPARATION PROCESSES
SOLUTIONS
WASTE MANAGEMENT
WASTES
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management