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Antibacterial activity of metal-containing clinoptilolite in natural seawater

Authorized Users Only
2019
Authors
Dikić, Jelena
Hrenović, Jasna
Durn, Goran
Kovacić, Ana
Rajić, Nevenka
Article (Published version)
Metadata
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Abstract
Antibacterial activity of a natural zeolite, clinoptilolite (Z), enriched with about 0.4-0.5 mmol of Ag (Ag-Z), Cu (Cu-Z) or Zn (Zn-Z) was tested toward two strains of Gram-negative bacteria - Escherichia coli and Acinetobacter baumannii - in natural seawater from Adriatic Sea (Croatia). The Ag-Z and Cu-Z exhibited bactericidal activity toward E. coli and A. baumannii after 3 and 6 h of exposure, respectively. The Zn-Z showed antibacterial activity toward both strains, but lacking the bactericidal effect even after 24 h of exposure. All studied samples released metal cations in seawater. Concentration of Ag and Zn leached from Ag-Z and Zn-Z was higher than maximum allowable concentrations (MAC) for drinking water, whereas concentration of Cu was below MAC. Due to high concentration of Na+ in seawater (about 1.2 g Na+ dm(-3)) an ion-exchange process can be responsible for the leaching of the studied cations. The lowest extent of leaching from Cu-Z was ascribed to different position and ...geometry of sites occupied by Cu(II) in the clinoptilolite lattice. The antibacterial activity of M-Z was attributed to the metal cations leached from the zeolite lattice into seawater. The obtained results indicate that Cu-Z can be considered as a promising disinfectant for treatment of seawater.

Keywords:
Escherichia coli / Acinetobacter baumannii / Natural zeolite / Silver / Copper / Zinc / Bactericidal activity
Source:
Desalination and Water Treatment, 2019, 170, 75-79
Publisher:
  • Desalination Publ, Hopkinton
Funding / projects:
  • Croatian Science Foundation [IP-2014-09-5656]
  • Oxide-based environmentally-friendly porous materials for genotoxic substances removal (RS-172018)

DOI: 10.5004/dwt.2019.24712

ISSN: 1944-3994

WoS: 000502091900008

Scopus: 2-s2.0-85076587465
[ Google Scholar ]
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4109
Collections
  • Radovi istraživača (Inovacioni centar) / Researchers’ publications (Innovation Centre)
  • Radovi istraživača / Researchers’ publications (TMF)
Institution/Community
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Dikić, Jelena
AU  - Hrenović, Jasna
AU  - Durn, Goran
AU  - Kovacić, Ana
AU  - Rajić, Nevenka
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4109
AB  - Antibacterial activity of a natural zeolite, clinoptilolite (Z), enriched with about 0.4-0.5 mmol of Ag (Ag-Z), Cu (Cu-Z) or Zn (Zn-Z) was tested toward two strains of Gram-negative bacteria - Escherichia coli and Acinetobacter baumannii - in natural seawater from Adriatic Sea (Croatia). The Ag-Z and Cu-Z exhibited bactericidal activity toward E. coli and A. baumannii after 3 and 6 h of exposure, respectively. The Zn-Z showed antibacterial activity toward both strains, but lacking the bactericidal effect even after 24 h of exposure. All studied samples released metal cations in seawater. Concentration of Ag and Zn leached from Ag-Z and Zn-Z was higher than maximum allowable concentrations (MAC) for drinking water, whereas concentration of Cu was below MAC. Due to high concentration of Na+ in seawater (about 1.2 g Na+ dm(-3)) an ion-exchange process can be responsible for the leaching of the studied cations. The lowest extent of leaching from Cu-Z was ascribed to different position and geometry of sites occupied by Cu(II) in the clinoptilolite lattice. The antibacterial activity of M-Z was attributed to the metal cations leached from the zeolite lattice into seawater. The obtained results indicate that Cu-Z can be considered as a promising disinfectant for treatment of seawater.
PB  - Desalination Publ, Hopkinton
T2  - Desalination and Water Treatment
T1  - Antibacterial activity of metal-containing clinoptilolite in natural seawater
EP  - 79
SP  - 75
VL  - 170
DO  - 10.5004/dwt.2019.24712
UR  - conv_6007
ER  - 
@article{
author = "Dikić, Jelena and Hrenović, Jasna and Durn, Goran and Kovacić, Ana and Rajić, Nevenka",
year = "2019",
abstract = "Antibacterial activity of a natural zeolite, clinoptilolite (Z), enriched with about 0.4-0.5 mmol of Ag (Ag-Z), Cu (Cu-Z) or Zn (Zn-Z) was tested toward two strains of Gram-negative bacteria - Escherichia coli and Acinetobacter baumannii - in natural seawater from Adriatic Sea (Croatia). The Ag-Z and Cu-Z exhibited bactericidal activity toward E. coli and A. baumannii after 3 and 6 h of exposure, respectively. The Zn-Z showed antibacterial activity toward both strains, but lacking the bactericidal effect even after 24 h of exposure. All studied samples released metal cations in seawater. Concentration of Ag and Zn leached from Ag-Z and Zn-Z was higher than maximum allowable concentrations (MAC) for drinking water, whereas concentration of Cu was below MAC. Due to high concentration of Na+ in seawater (about 1.2 g Na+ dm(-3)) an ion-exchange process can be responsible for the leaching of the studied cations. The lowest extent of leaching from Cu-Z was ascribed to different position and geometry of sites occupied by Cu(II) in the clinoptilolite lattice. The antibacterial activity of M-Z was attributed to the metal cations leached from the zeolite lattice into seawater. The obtained results indicate that Cu-Z can be considered as a promising disinfectant for treatment of seawater.",
publisher = "Desalination Publ, Hopkinton",
journal = "Desalination and Water Treatment",
title = "Antibacterial activity of metal-containing clinoptilolite in natural seawater",
pages = "79-75",
volume = "170",
doi = "10.5004/dwt.2019.24712",
url = "conv_6007"
}
Dikić, J., Hrenović, J., Durn, G., Kovacić, A.,& Rajić, N.. (2019). Antibacterial activity of metal-containing clinoptilolite in natural seawater. in Desalination and Water Treatment
Desalination Publ, Hopkinton., 170, 75-79.
https://doi.org/10.5004/dwt.2019.24712
conv_6007
Dikić J, Hrenović J, Durn G, Kovacić A, Rajić N. Antibacterial activity of metal-containing clinoptilolite in natural seawater. in Desalination and Water Treatment. 2019;170:75-79.
doi:10.5004/dwt.2019.24712
conv_6007 .
Dikić, Jelena, Hrenović, Jasna, Durn, Goran, Kovacić, Ana, Rajić, Nevenka, "Antibacterial activity of metal-containing clinoptilolite in natural seawater" in Desalination and Water Treatment, 170 (2019):75-79,
https://doi.org/10.5004/dwt.2019.24712 .,
conv_6007 .

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