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Title: Method for separating water soluble organics from a process stream by aqueous biphasic extraction

Abstract

A method for separating water-miscible organic species from a process stream by aqueous biphasic extraction is provided. An aqueous biphase system is generated by contacting a process stream comprised of water, salt, and organic species with an aqueous polymer solution. The organic species transfer from the salt-rich phase to the polymer-rich phase, and the phases are separated. Next, the polymer is recovered from the loaded polymer phase by selectively extracting the polymer into an organic phase at an elevated temperature, while the organic species remain in a substantially salt-free aqueous solution. Alternatively, the polymer is recovered from the loaded polymer by a temperature induced phase separation (cloud point extraction), whereby the polymer and the organic species separate into two distinct solutions. The method for separating water-miscible organic species is applicable to the treatment of industrial wastewater streams, including the extraction and recovery of complexed metal ions from salt solutions, organic contaminants from mineral processing streams, and colorants from spent dye baths.

Authors:
;
Publication Date:
Sponsoring Org.:
US Department of Energy
OSTI Identifier:
20013220
Alternate Identifier(s):
OSTI ID: 20013220
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 7 Sep 1999
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; INDUSTRIAL WASTES; WASTE WATER; SEPARATION PROCESSES; ORGANIC COMPOUNDS; MATERIALS RECOVERY; WASTE PROCESSING; METALS; DYES

Citation Formats

Chaiko, D.J., and Mego, W.A. Method for separating water soluble organics from a process stream by aqueous biphasic extraction. United States: N. p., 1999. Web.
Chaiko, D.J., & Mego, W.A. Method for separating water soluble organics from a process stream by aqueous biphasic extraction. United States.
Chaiko, D.J., and Mego, W.A. Tue . "Method for separating water soluble organics from a process stream by aqueous biphasic extraction". United States.
@article{osti_20013220,
title = {Method for separating water soluble organics from a process stream by aqueous biphasic extraction},
author = {Chaiko, D.J. and Mego, W.A.},
abstractNote = {A method for separating water-miscible organic species from a process stream by aqueous biphasic extraction is provided. An aqueous biphase system is generated by contacting a process stream comprised of water, salt, and organic species with an aqueous polymer solution. The organic species transfer from the salt-rich phase to the polymer-rich phase, and the phases are separated. Next, the polymer is recovered from the loaded polymer phase by selectively extracting the polymer into an organic phase at an elevated temperature, while the organic species remain in a substantially salt-free aqueous solution. Alternatively, the polymer is recovered from the loaded polymer by a temperature induced phase separation (cloud point extraction), whereby the polymer and the organic species separate into two distinct solutions. The method for separating water-miscible organic species is applicable to the treatment of industrial wastewater streams, including the extraction and recovery of complexed metal ions from salt solutions, organic contaminants from mineral processing streams, and colorants from spent dye baths.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {9}
}