Adsorption Studies of Radionuclides and Toxic Metal Ions on a Modified Mesoporous Lanthanum(III) Silicate |
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| Authors: | Hamid Sepehrian Syed Javad Ahmadi Syed Waqif‐Husain Ahmad Reza Zolfaghari‐Daryani Mortaza Azadmousavi |
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| Affiliation: | 1. Fax: 0098‐21‐82062539;2. NFCRS, Nuclear Science and Technology Research Institute, AEOI, P.O. Box 11365/8486, Tehran, Iran;3. Department of Chemistry, Faculty of Science, Science and Research Branch, Islamic Azad University, P.O. Box 14515‐775, Poonak‐Hesarak, Tehran, Iran;4. Faculty of Nuclear Engineering, University of Shahid Beheshti, Tehran, Iran |
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| Abstract: | ![]()
A new adsorbent, modified mesoporous lanthanum(III) silicate, has been prepared with various molar ratios of Si/La (10, 20, 40, 80) and cethyltrimethylammonium bromide (CTAB) as structure directing agent. XRD, nitrogen sorption, SEM, IR, thermogravimetry and sorption of radionuclides and toxic metal ions have been studied. The results show that adsorption amount of some element such as Pb(II) and Th(IV) has been increased significantly by incorporation of lanthanum ions in the framework of adsorbent. Separation of Co(II)‐Th(IV), Co(II)‐U(VI) and Mo(VI)‐U(VI) has been developed on columns of this adsorbent. |
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| Keywords: | mesoporous lanthanum(III) silicate radionuclide toxic metal ion adsorption study |
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