Process for the solvent extraction for the radiolysis and dehalogenation of halogenated organic compounds in soils, sludges, sediments and slurries
Patent 6132561 Issued on October 17, 2000. Estimated Expiration Date: 
October 9, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 9, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDehalogenation of halogenated compounds Method of removing contaminants from contaminated soil in situ In-situ x-ray treatment of organically contaminated material Irradiator apparatus Method for testing earth samples for contamination by organic contaminants Process for gamma ray induced degradation of polychlorinated biphenyls Patent #: 5799257 InventorsApplicationNo. 168894 filed on 10/09/1998US Classes:204/157.15, Processes of treating materials by wave energy250/253, GEOLOGICAL TESTING OR IRRADIATION588/17, Geological or extraterrestrial588/316, Dehalogenation using reactive chemical agents able to degrade (EPO/JPO)588/318, Detoxification by using acid or alkaline reagents (EPO/JPO)588/320, By oxidation; by combustion (EPO/JPO)588/406Containing halogen (EPO/JPO)ExaminersPrimary: Gorgos, KathrynAssistant: Wong, Don Attorney, Agent or FirmInternational ClassesC07C 001/00A62D 003/00 G01V 005/00 AbstractA process of extracting halogenated organic compounds, and particularly PCBs, from soil, sediment, slurry, sludge and dehalogenating the compounds contacting a contaminated soil sample with an extraction medium of a mixture of an alkane and a water miscible alcohol. The organic compounds dissolve in the extraction medium which is separated from the soil by passing water upwardly through the soil. The extraction medium floats to the surface of the water and is separated. Thereafter, the extraction medium containing the halogenated organic contaminants is subjected to ionizing radiation to radiolytically dehalogenate the compounds. |
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