A study of metal ion adsorption at low suspended-solid concentrations |
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| Institution: | 1. Department of Chemistry, Bhupal Nobles’ University, Udaipur, Rajasthan, India;2. Bioengineering Research Group, Nanotechnology and Advanced Materials Department, Materials and Energy Research Center (MERC), Tehran, Iran;3. Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran;4. Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran;1. Department of Chemistry, Bhupal Nobles’ University, Udaipur, Rajasthan, India;2. Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran;3. Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran;4. Tissue Engineering Research Group (TERG), Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, 917794-8564 Mashhad, Iran;1. Department of Chemistry, Bhupal Nobles’ University, Udaipur, Rajasthan, India;2. Bioengineering Research Group, Nanotechnology and Advanced Materials Department, Materials and Energy Research Center (MERC), Tehran, Iran;3. Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran;4. Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran;1. CD Laboratory for Extractive Metallurgy of Technological Metals, Nonferrous Metallurgy, Montanuniversitaet Leoben, Franz-Josef-Str. 18, A-8700 Leoben, Austria;2. CERATIZIT Austria GmbH, Metallwerk-Plansee-Str. 71, A-6600 Reutte, Austria |
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| Abstract: | A procedure for conducting adsorption studies at low suspended solid concentrations in natural waters (<50 mg l?1) is described. Methodological complications previously associated with such experiments have been overcome. Adsorption of zinc ion onto synthetic colloidal titania (TiO2) was studied as a function of pH, supporting electrolyte (NaCl) concentration (0·1-0·002 m) and particle concentration (2–50 mg l?1). The lack of success of the Davis Leckie site bonding model in describing Zn(II) adsorption emphasizes the need for further studies of adsorption at low suspended-solid concentrations. |
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