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. 7 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of Chicago, IL (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- OSTI Identifier:
- 570508
- Patent Number(s):
- 5707525
- Application Number:
- PAN: 8-655,251; CNN: Grant CTS-9207264
- Assignee:
- Arch Development Corp., Chicago, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 13 Jan 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; DYES; MATERIALS RECOVERY; SEPARATION PROCESSES; AQUEOUS SOLUTIONS; POLYETHYLENE GLYCOLS; ADSORBENTS
Citation Formats
Rogers, R, Horwitz, E P, and Bond, A H. Process for separating and recovering an anionic dye from an aqueous solution. United States: N. p., 1998.
Web.
Rogers, R, Horwitz, E P, & Bond, A H. Process for separating and recovering an anionic dye from an aqueous solution. United States.
Rogers, R, Horwitz, E P, and Bond, A H. Tue .
"Process for separating and recovering an anionic dye from an aqueous solution". United States.
@article{osti_570508,
title = {Process for separating and recovering an anionic dye from an aqueous solution},
author = {Rogers, R and Horwitz, E P and Bond, A 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. 7 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}