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Title: Liquid-liquid extraction of gallium(III) from acidic nitrate media with bis(2-ethylhexyl) phosphinic acid in toluene

Abstract

The distribution equilibria of gallium(III) between bis(2-ethylhexyl) phosphinic acid dissolved in toluene and acidic aqueous nitrate media has been investigated as a function of the concentration of extractant in organic phase and concentration of hydrogen ion and gallium(III) ion in aqueous phase. The extraction characteristics of bis(2-ethylhexyl) phosphinic acid are compared with that of bis(2-ethylhexyl) phosphoric acid to get further information. The stoichiometry of the extracted species is determined on the basis of slope analysis and IR spectra. Gallium is extracted by a cation exchange mechanism as GaR{sub 3} by bis(2-ethylhexyl) phosphinic acid and as GaR{sub 3}{center{underscore}dot}HR by bis(2-ethylhexyl) phosphoric acid. Temperature dependence of the extraction equilibrium is examined by temperature variation method. Both extraction processes are endothermic in nature and increase in temperature is favorable.

Authors:
;
Publication Date:
Research Org.:
Univ. of Mumbai, Matunga (IN)
OSTI Identifier:
20000559
Alternate Identifier(s):
OSTI ID: 20000559
Resource Type:
Journal Article
Journal Name:
Solvent Extraction and Ion Exchange
Additional Journal Information:
Journal Volume: 17; Journal Issue: 5; Other Information: PBD: Sep 1999; Journal ID: ISSN 0736-6299
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; GALLIUM; SOLVENT EXTRACTION; PHOSPHINIC ACIDS; TOLUENE; TEMPERATURE DEPENDENCE; ORE PROCESSING; GALLIUM ARSENIDES; RECYCLING

Citation Formats

Naik, M.T., and Dhadke, P.M. Liquid-liquid extraction of gallium(III) from acidic nitrate media with bis(2-ethylhexyl) phosphinic acid in toluene. United States: N. p., 1999. Web. doi:10.1080/07366299908934649.
Naik, M.T., & Dhadke, P.M. Liquid-liquid extraction of gallium(III) from acidic nitrate media with bis(2-ethylhexyl) phosphinic acid in toluene. United States. doi:10.1080/07366299908934649.
Naik, M.T., and Dhadke, P.M. Wed . "Liquid-liquid extraction of gallium(III) from acidic nitrate media with bis(2-ethylhexyl) phosphinic acid in toluene". United States. doi:10.1080/07366299908934649.
@article{osti_20000559,
title = {Liquid-liquid extraction of gallium(III) from acidic nitrate media with bis(2-ethylhexyl) phosphinic acid in toluene},
author = {Naik, M.T. and Dhadke, P.M.},
abstractNote = {The distribution equilibria of gallium(III) between bis(2-ethylhexyl) phosphinic acid dissolved in toluene and acidic aqueous nitrate media has been investigated as a function of the concentration of extractant in organic phase and concentration of hydrogen ion and gallium(III) ion in aqueous phase. The extraction characteristics of bis(2-ethylhexyl) phosphinic acid are compared with that of bis(2-ethylhexyl) phosphoric acid to get further information. The stoichiometry of the extracted species is determined on the basis of slope analysis and IR spectra. Gallium is extracted by a cation exchange mechanism as GaR{sub 3} by bis(2-ethylhexyl) phosphinic acid and as GaR{sub 3}{center{underscore}dot}HR by bis(2-ethylhexyl) phosphoric acid. Temperature dependence of the extraction equilibrium is examined by temperature variation method. Both extraction processes are endothermic in nature and increase in temperature is favorable.},
doi = {10.1080/07366299908934649},
journal = {Solvent Extraction and Ion Exchange},
issn = {0736-6299},
number = 5,
volume = 17,
place = {United States},
year = {1999},
month = {9}
}