Please use this identifier to cite or link to this item:
https://hdl.handle.net/11147/4734
Title: | Silver, zinc, and copper exchange in a Na-clinoptilolite and resulting effect on antibacterial activity | Authors: | Top, Ayben Ülkü, Semra |
Keywords: | Antibacterial activity Cation exchange Clinoptilolite Copper Silver Zinc Ion exchange |
Publisher: | Elsevier Ltd. | Source: | Yop, A., and Ülkü, S. (2004). Silver, zinc, and copper exchange in a Na-clinoptilolite and resulting effect on antibacterial activity. Applied Clay Science, 27(1-2), 13-19. doi:10.1016/j.clay.2003.12.002 | Abstract: | Ag+-Na+, Zn2+-Na+, and Cu2+-Na+ equilibria for clinoptilolite-rich mineral from Gördes (Western Anatolia) were investigated at 25 °C and 0.1 N total solution normality. While silver exchange was favorable over the whole concentration range, zinc and copper were partially exchanged and preferred only at low concentrations. The standard free energies of exchanges for Ag+-Na+, Zn2+-Na+, and Cu2+-Na+ pairs were found as -6.0, 2.03, and 3.09 kJ/equiv., respectively. From these values, selectivity sequence was determined as Ag+>Na+ >Zn2+>Cu2+. Antibacterial activities of the exchanged samples were measured as a function of exchange level against Pseudomonas aeruginosa and Escherichia coli. Considering the selectivity sequence of the clinoptilolite and antibacterial activity results, Ag-clinoptilolite seemed to be promising antibacterial material. | URI: | http://doi.org/10.1016/j.clay.2003.12.002 http://hdl.handle.net/11147/4734 |
ISSN: | 0169-1317 0169-1317 |
Appears in Collections: | Chemical Engineering / Kimya Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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