Preparation of a Hybrid Zirconium Phytate and Its Application for the Removal of Fluorine in Metal-Precoating Effluent

School of Light Industry and Chemical Engineering, Dalian Polytechnic University, 116034, Dalian, P.R. China

^* Corresponding author: wang_dz@dlpu.edu.cn, Tel: +86-0411-86323649

Abstract

A hybrid zirconium phytate (Zr_xIP₆) with porous surface was synthesized via the direct precipitation method. The as-prepared Zr_xIP₆ was characterized by SEM, EDS, FT-IR. The sample obtained from P/Zr = 3:1(mol/mol) indicated that a hybrid material might be formed through coordination of the zirconium ions with the –COPO3 groups in phytic acid molecules. An attempt to employ the hybrid Zr_xIP₆ as a sorbent in the removal of fluoride ions in metal-precoating wastewater was performed. The adsorption capacity q_e and the residual F^- ions concentration Ce using the Zr_xIP₆ (P/Zr = 3:1) as an adsorbent, were 1.21 mg.g^-1 and 1.47 mg.L^-1, respectively.