An adsorption study of 99Tc using nanoscale zero-valent iron supported on D001 resin
Received date: 02 Nov 2018
Accepted date: 25 Feb 2019
Published date: 15 Mar 2020
Copyright
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 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.
Key words： technetium; nanoscale zero-valent iron (nZVI); D001 resin; adsorption
Lingxiao FU , Jianhua ZU , Linfeng HE , Enxi GU , Huan WANG . An adsorption study of 99Tc using nanoscale zero-valent iron supported on D001 resin[J]. Frontiers in Energy, 2020 , 14(1) : 11 -17 . DOI: 10.1007/s11708-019-0634-y
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