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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