Silver, zinc, and copper exchange in a Na-clinoptilolite and resulting effect on antibacterial activity

被引：236

作者：

Top, A ^{[1
]}

Ülkü, S ^{[1
]}

机构：

[1] Izmir Inst Technol, Fac Engn, Dept Chem Engn, TR-35437 Izmir, Turkey

来源：

APPLIED CLAY SCIENCE | 2004年 / 27卷 / 1-2期

关键词：

clinoptilolite; cation exchange; silver; zinc; copper; antibacterial activity;

D O I：

10.1016/j.clay.2003.12.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ag+-Na+, Zn2+-Na+, and Cu2+-Na+ equilibria for clinoptilolite-rich mineral from Gordes (Western Anatolia) were investigated at 25 degreesC 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. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：13 / 19

页数：7

共 22 条

[1] Role of the countercations on the molecular sieve properties of a clinoptilolite [J].

Arcoya, A ;

Gonzalez, JA ;

Llabre, G ;

Seoane, XL ;

Travieso, N .

MICROPOROUS MATERIALS, 1996, 7 (01) :1-13

[2]

BARRER RM, 1978, NATURAL ZEOLITES OCC, P385

[3]

BRESCIANIPAHOR N, 1981, JCS DA, V12, P2288

[4]

CZARAN E, 1989, ACTA CHIM HUNG, V126, P673

[5]

DYER A, 1981, SEPAR SCI TECHNOL, V16, P173, DOI 10.1080/01496398108058111

[6]

Gotardi G, 1985, NATURAL ZEOLITES

[7] Equilibrium and kinetic ion exchange studies of Pb2+, Cr3+, Fe3+ and Cu2+ on natural clinoptilolite [J].

Inglezakis, VJ ;

Loizidou, MD ;

Grigoropoulou, HP .

WATER RESEARCH, 2002, 36 (11) :2784-2792

[8]

INOUE Y, 1997, J INORGANIC BIOCH, V67, P377

[9] EQUILIBRIUM STUDIES OF SODIUM AMMONIUM, POTASSIUM AMMONIUM, AND CALCIUM AMMONIUM EXCHANGES ON CLINOPTILOLITE ZEOLITE [J].

JAMA, MA ;

YUCEL, H .

SEPARATION SCIENCE AND TECHNOLOGY, 1989, 24 (15) :1393-1416

[10] EVALUATION OF PRETREATED NATURAL ZEOLITES FOR AMMONIUM REMOVAL [J].

KLIEVE, JR ;

SEMMENS, MJ .

WATER RESEARCH, 1980, 14 (02) :161-168

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