Studies of the Selective Adsorption of Anions by Metal Ion Loaded Ion-exchange Resin. VI. The Adsorption Behavior of the Phosphate Ion on the Iron(III) Loaded Ion-exchange Resin
- 1 January 1984
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 57 (1) , 54-57
- https://doi.org/10.1246/bcsj.57.54
Abstract
Adsorption isotherms for the phosphate ion by various iron(III)-loaded ion-exchange resins(IRC-Fe(III)), which are different in iron(III)-ion concentrations, were prepared at 5–35 °C in aqueous systems with pH values of 3 and 4.6 by means of the batch method. These isotherms could be represented by the Cp=Q∞(Cp⁄Q)−1⁄K equation in the phosphate-ion-concentration range from 3.23×10−4 to 3.23×10−2 mol dm−3 (10 ppm to 1000 ppm as P), where Cp and Q are the phosphate-ion concentrations of the aqueous phase and the adsorbent respectively; Q∞ is the saturated phosphate concentration of the adsorbent, and K is the equilibrium constant. From the analysis of adsorption isotherms, the values for Q∞ and K were determined on each adsorbent, and the nature of the adsorbent IRC-Fe(III) was discussed, with consideration paid to these two parameters and the pH-dependency of the distribution ratio of the phosphate ion between the aqueous phase and the adsorbent.Keywords
This publication has 1 reference indexed in Scilit:
- Adsorption Behavior of Phosphate Ion on the Iron(III) Complex of a Chelating ResinBulletin of the Chemical Society of Japan, 1979