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Title: Separations by supported liquid membrane cascades

Abstract

The invention describes a new separation technique which leads to multi-stage operations by the use of a series (a cascade) of alternated carrier-containing supported-liquid cation exchanger extractant and a liquid anion exchanger extractant (or a neutral extractant) as carrier. The membranes are spaced between alternated aqueous electrolytic solutions of different composition which alternatively provide positively charged extractable species and negatively charged (or zero charged) extractable species, of the chemical species to be separated. The alternated aqueous electrolytic solutions in addition to providing the driving force to the process, simultaneously function as a stripping solution from one type of membrane and as an extraction-promoting solution for the other type of membrane. The aqueous electrolytic solution and the supported liquid membranes are arranged to provide a continuous process.

Inventors:
Issue Date:
OSTI Identifier:
7139303
Application Number:
ON: DE84011302
Assignee:
Dept. of Energy ERA-09-026483; EDB-84-084210
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; SEPARATION PROCESSES; CATIONS; ION EXCHANGE MATERIALS; MEMBRANES; SOLVENT EXTRACTION; CHARGED PARTICLES; EXTRACTION; IONS; MATERIALS; 400105* - Separation Procedures

Citation Formats

Danesi, P.R. Separations by supported liquid membrane cascades. United States: N. p., 1983. Web.
Danesi, P.R. Separations by supported liquid membrane cascades. United States.
Danesi, P.R. Thu . "Separations by supported liquid membrane cascades". United States.
@article{osti_7139303,
title = {Separations by supported liquid membrane cascades},
author = {Danesi, P.R.},
abstractNote = {The invention describes a new separation technique which leads to multi-stage operations by the use of a series (a cascade) of alternated carrier-containing supported-liquid cation exchanger extractant and a liquid anion exchanger extractant (or a neutral extractant) as carrier. The membranes are spaced between alternated aqueous electrolytic solutions of different composition which alternatively provide positively charged extractable species and negatively charged (or zero charged) extractable species, of the chemical species to be separated. The alternated aqueous electrolytic solutions in addition to providing the driving force to the process, simultaneously function as a stripping solution from one type of membrane and as an extraction-promoting solution for the other type of membrane. The aqueous electrolytic solution and the supported liquid membranes are arranged to provide a continuous process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {9}
}