KAGAKU KOGAKU RONBUNSHU
Online ISSN : 1349-9203
Print ISSN : 0386-216X
ISSN-L : 0386-216X
Special Issue [Chemical Engineering of Water, Atmosphere, and Earth]
Removal of Phosphate Ions by Use of Porous Structure of Zirconium(IV)-Loaded Zeolite
Seiichirou OhuraHiroyuki HaradaHidetaka KawakitaKeisuke OhtoShintaro Morisada
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2012 Volume 38 Issue 5 Pages 329-333

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Abstract

Zirconium(IV), which has strong affinity for phosphate ions, was loaded to zeolite for the adsorption and a removal of phosphate ions. At saturation, the amount of zirconium loaded to zeolite reached 1.20 mol/kg. Adsorption of phosphate ions by the zirconium-loaded zeolite was 100% in the range of pH 2–4. At above pH 4, the percentage adsorption decreased. At pH 7, the capacity of Zr-zeolite to adsorb phosphate ions was 0.65 mol/kg, while that of H-zeolite was 0.13 mol/kg. Adsorption of phosphate ions in secondary effluent containing other ions was fast and selective.

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© 2012 by THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN
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