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Frontiers in Energy >> 2020, Volume 14, Issue 1 doi: 10.1007/s11708-019-0634-y

An adsorption study of

. School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.. Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China

Accepted: 2019-07-01 Available online: 2019-07-01

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Nanoscale zero-valent iron (nZVI) supported on D001 resin (D001-nZVI) was synthesized for adsorption of high solubility and mobility radionuclide Tc. Re(VII), a chemical substitute for Tc, 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 ReO 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.

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