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IJC-A Vol.46A(04) [April 2007] >

Title: Separation of oxoanions from mixed aqueous solvents using strongly basic anion exchanger Amberlite IRA-400 in nitrate form
Authors: Tomar, Radha
Sharma, Pankaj
Kushwah, Vandana
Issue Date: Apr-2007
Publisher: CSIR
IPC CodeInt. Cl. ⁸ B01J41/00
Abstract: Batch technique has been employed to evaluate the ability of strongly basic anion exchanger Amberlite IRA-400 in nitrate form to separate oxoanions, viz., chromate, molybdate and tungstate from mixed aqueous solvents such as aqueous methanol, aqueous ethanol and aqueous isopropanol. Conclusions have been drawn regarding the variation of selectivity coefficient with change in solvent composition and rise in temperature. Thermodynamics of ion exchange has also been studied. The data indicate that strongly basic anion exchanger Amberlite IRA-400 in nitrate form has got very good potential for separation of these oxoanions and exchange of anions increases with increase in temperature and alcoholic content in partly non-aqueous medium. The selectivity data for chromate/nitrate exchange in mixed methanolic solvents also suggests that there is a remarkable effect of particle size and quantity of the resin on exchange.
Page(s): 624-627
ISSN: 0376-4710
Source:IJC-A Vol.46A(04) [April 2007]

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