Abstract
A new inorganic ion exchanger, ferric arsenate, has been prepared under varied conditions. The product formed by the homogeneous precipitation method is most stable. Ion exchange selectivity with different metal ions (alkali metal and alkaline earth metal ions) is different and depends upon the hydrated radii of the exchanging cation. A straight line is obtained for the plot of capacity against hydrated radii of the cation in the same group. Some important separations are achieved quantitatively on the columns of ferric arsenate.
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