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Title: Process for separating and recovering an anionic dye from an aqueous solution

Abstract

A solid/liquid phase process for the separation and recovery of an anionic dye from an aqueous solution is disclosed. The solid phase comprises separation particles having surface-bonded poly(ethylene glycol) groups, whereas the aqueous solution from which the anionic dye molecules are separated contains a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved lyotropic salt. After contact between the aqueous solution and separation particles, the anionic dye is bound to the particles. The bound anionic dye molecules are freed from the separation particles by contacting the anionic dye-bound particles with an aqueous solution that does not contain a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved lyotropic salt to form an aqueous anionic dye solution whose anionic dye concentration is preferably higher than that of the initial dye-containing solution.

Inventors:
 [1];  [2];  [3]
  1. DeKalb, IL
  2. Naperville, IL
  3. Tallahassee, FL
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
871323
Patent Number(s):
US 5707525
Assignee:
Arch Development Corp. (Chicago, IL); Northern Illinois University (DeKalb, IL)
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; separating; recovering; anionic; dye; aqueous; solution; solid; liquid; phase; separation; recovery; disclosed; comprises; particles; surface-bonded; poly; ethylene; glycol; molecules; separated; contains; biphase-forming; amount; dissolved; lyotropic; salt; contact; bound; freed; contacting; dye-bound; contain; form; concentration; preferably; initial; dye-containing; separation particles; anionic dye; ethylene glycol; aqueous solution; liquid phase; solid phase; dye molecules; phase process; separated contains; surface-bonded poly; comprises separation; dye solution; biphase-forming amount; liquid biphase-forming; containing solution; /210/

Citation Formats

Rogers, Robin, Horwitz, E Philip, and Bond, Andrew H. Process for separating and recovering an anionic dye from an aqueous solution. United States: N. p., 1998. Web.
Rogers, Robin, Horwitz, E Philip, & Bond, Andrew H. Process for separating and recovering an anionic dye from an aqueous solution. United States.
Rogers, Robin, Horwitz, E Philip, and Bond, Andrew H. Thu . "Process for separating and recovering an anionic dye from an aqueous solution". United States. https://www.osti.gov/servlets/purl/871323.
@article{osti_871323,
title = {Process for separating and recovering an anionic dye from an aqueous solution},
author = {Rogers, Robin and Horwitz, E Philip and Bond, Andrew H},
abstractNote = {A solid/liquid phase process for the separation and recovery of an anionic dye from an aqueous solution is disclosed. The solid phase comprises separation particles having surface-bonded poly(ethylene glycol) groups, whereas the aqueous solution from which the anionic dye molecules are separated contains a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved lyotropic salt. After contact between the aqueous solution and separation particles, the anionic dye is bound to the particles. The bound anionic dye molecules are freed from the separation particles by contacting the anionic dye-bound particles with an aqueous solution that does not contain a poly(ethylene glycol) liquid/liquid biphase-forming amount of a dissolved lyotropic salt to form an aqueous anionic dye solution whose anionic dye concentration is preferably higher than that of the initial dye-containing solution.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

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