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(1999)
Chemical Thermodynamics of Technetium
- Publisher
- Springer Journals
- Copyright
- Copyright © Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019
- ISSN
- 2095-1701
- eISSN
- 2095-1698
- DOI
- 10.1007/s11708-019-0634-y
- Publisher site
- See Article on Publisher Site
Abstract
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 ReO4−\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\rm{ReO}_4^-$$\end{document} 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.
Journal
"Frontiers in Energy" – Springer Journals
Published: Mar 10, 2020