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Title: Solvent extraction and separation studies of antimony(III) and bismuth(III) by using cyanex-925
Authors: Iyer, J N
Dhadke, P M
Issue Date: Nov-2003
Publisher: NISCAIR-CSIR, India
Abstract: Cyanex-925 in xylene was used for extraction and separation of antimony(III) and bismuth(III) from aqueous solution. It was found that Sb(III) gets quantitatively extracted in the range 0.1-0.8 M HCl and 0.01-1.0 M H2SO4, while Bi(III) in the range 0.01-0.4 M HCl and 0.1-1.0 M HNO3. From organic phase, Sb(III) was stripped back with 8.0 M H2SO4 and Bi(III) with 2.0-3.0 M HNO3. The extraction behaviour of both the metal ions was studied separately as a function of acid concentration, temperature, equilibrium time and stripping ability using various acids and bases. Based on this results, sequential methods for their separation from multicomponent mixtures were developed.
Page(s): 665-669
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.10(6) [November 2003]

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