| Autor: |
Takeshita, Ryoichi, Yoshida, Isao, Ueno, Keihei |
| Zdroj: |
Bulletin of the Chemical Society of Japan; September 1979, Vol. 52 Issue: 9 p2577-2580, 4p |
| Abstrakt: |
Phosphate ion in 0.1 M (1 M=1 mol dm−3) sodium chloride solution was adsorbed selectively on the iron(III) complex of a chelating resin. Coordination unsaturated sites of the resin-bound iron(III) ion were considered to be the adsorption sites for phosphate ion, predominating species being dihydrogenphosphate ion (H2PO4−). Adsorption capacity of the resin increased with the increasing amount of iron(III) ion loaded on the chelating resin, while the molar ratio of the adsorbed phosphate ion to the resin-bound iron(III) ion became less than unity, indicating that only a fraction of the resin-bound iron(III) ion acts as the adsorption site at higher iron content. The steric and electrostatic interactions among the phosphate ions in the resin matrix may interfere with the stoichiometric adsorption of phosphate ion on the resin-bound iron at higher iron content. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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