An adsorption study of^99Tc using nanoscale zero-valent iron supported on D001 resin  

作　　者：Lingxiao FU Jianhua ZU Linfeng HE Enxi GU Huan WANG 

机构地区：[1]School of Nuclear Science and Engineering,Shanghai Jiao Tong University,Shanghai,200240,China [2]Shanghai Institute of Measurement and Testing Technology,Shanghai,201203,China

出　　处：《Frontiers in Energy》2020年第1期11-17,共7页能源前沿（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11675103 and 91226111).

摘　　要：Nanoscale zero-valent iron(nZVI)supported on D001 resin(D001-nZVI)was synthesized for adsorption of high solubility and mobility radionuclide^99Tc.Re(VII),a chemical substitute for^99Tc,was utilized in batch experiments to investigate the feasibility and adsorption mechanism toward Tc(VII).Factors(pH,resin dose)affecting Re(VII)adsorption were studied.The high adsorption efficiency of Re(VII)at pH=3 and the solid-liquid ratio of 20 g/L.X-ray diffraction patterns revealed the reduction of ReO^?4 into ReO2 immobilized in D001-nZVI.Based on the optimum conditions of Re(VII)adsorption,the removal experiments of Tc(VII)were conducted where the adsorption efficiency of Tc(VII)can reach 94%.Column experiments showed that the Thomas model gave a good fit to the adsorption process of Re(VII)and the maximum dynamic adsorption capacity was 0.2910 mg/g.

关 键 词：TECHNETIUM NANOSCALE zero-valent iron(nZVI) D001 RESIN ADSORPTION 

分 类 号：O64[理学—物理化学]