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Title:
STEAM STRIPPING OF CHLORINATED PHENOLS
Document Type and Number:
WIPO Patent Application WO/2003/013749
Kind Code:
A1
Abstract:
The invention provides a process for the removal of one or more chlorinated phenols, such as pentachlorophenol (PCP) or tetra chlorophenol (TCP), from a solid matrix, such as soil. The process includes contacting the solid matrix at a pH less than 5, preferably less than 2, with steam at a temperature of at least 100 °C to give a steam/chlorinated phenol mixture and then allowing the mixture to condense giving a distillate containing water and the one or more chlorinated phenols.

Inventors:
FITZPATRICK MICHAEL GEORGE (NZ)
Application Number:
PCT/NZ2002/000127
Publication Date:
February 20, 2003
Filing Date:
July 24, 2002
Export Citation:
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Assignee:
FITZPATRICK MICHAEL GEORGE (NZ)
International Classes:
B09C1/06; C07C37/76; C07C39/34; C07C39/36; (IPC1-7): B09C1/00; C07C37/76; C07C39/34; C07C39/36
Domestic Patent References:
WO1997000129A11997-01-03
Foreign References:
EP0005827A11979-12-12
GB1323369A1973-07-11
Other References:
VENINGEROVA ET AL.: "Analytical methods for the determination of organochlorine compounds. Application to environmental samples in the Slovak Republic", JOURNAL OF CHROMATOGRAPHY A, vol. 774, no. 1-2, 1997, pages 333 - 347
MARTENS ET AL.: "Determination of pentachlorophenol (PCP) in samples of the environmental specimen bank using isotope dilution", INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY, vol. 68, no. 4, 1997, pages 421 - 427
LEE ET AL.: "In situ extraction and derivation of pentachlorophenol and related compounds from soils using a supercritical fluid extraction system", JOURNAL OF CHROMATOGRAPHY, vol. 605, 1992, pages 109 - 113
TSE ET AL.: "Pilot study of in-situ thermal treatment for the remediation of pentachlorophenol-contaminated aquifers", ENVIRONMENTAL SCIENCE AND TECHNOLOGY, vol. 35, no. 24, pages 4910 - 4915
Attorney, Agent or Firm:
Lynch, Gregory Paul (P.O. Box 852, Wellington, NZ)
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