Synthesis of poly(acrylic acid-maleic acid)SiO2/Al2O3 as novel composite material for cesium removal from acidic solutions

A novel composite material of SiO2-Al2O3 based on poly(acrylic acid-maleic acid) was synthesized by irradiated with Co-60 gamma-rays at a dose of 25 KGy. The composite material was characterized using FTIR, TGA and BET surface area. Adsorption of Cs-134 from HNO3 was studied as a function of contact time, temperature and concentration of Cs. Sorption behavior of Cs-134 in different concentration of HCl, HNO3, acetic acid, ascorbic acid, citric acid, NaCl and NaNO3 solutions has been investigated. It can be concluded that the P(AA-MA)/SiO2/Al2O3 is promising adsorbent for Cs removal from acidic liquid radioactive waste.