Anion-Exchange Behaviour of Some Divalent Metal Ions in Nitric Acid-Organic Solvent on Amberlite IRA-410

Abstract

The adsorbability of the bivalent metals Zn(II), Mg(II), Co(II), Ni(II), Cd(II) and Cu(II) on the strong base anion exchange resin Amberlite IRA–410 in nitrate form, from mitric acid-organic solution media were investigated. The determination of the distribution coefficients was carried out in 0.05 M–2.5 M HNO₃ solution containing 0, 40, 60 and 90% (vol/vol) organic solvents. The effect of concentration of organic solvents as well as acidity on the distribution coefficient values show the importance of such media as complexing agents. Distribution coefficients were a function of both the volume percentage of organic solvents and of the nitric acid concentration. Adsorption measurements were made at constant temperature using a batch technique and employing complexometric titration and spectrophotometric analysis.