Preparation of porous resin loaded with crystalline hydrous zirconium oxide and its application to the removal of arsenic

摘要

A porous resin loaded with monoclinic or cubic hydrous zirconium oxide was prepared by incorporation of ZrOCl_2.8H_2O into porous spherical polymer beads followed by hydrolysis and hydrotehrmal treatemnt of the zirconium salt. Hydrous zirconium oxide appeared to deposit inside the proes with relatively large diameter. The adsorption capacity and distribution coefficients for As(III) and As(V) were determined by batch procedure. The hydrous zirconium oxide-loaded resin (Zrresin) showed a strong adsorption for As(V) at slightly acidic to neutral pH region while As(III) was favorably adsorbed at pH around 9 to 10.