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Effective water disinfection using silver nanoparticle containing silica beads

Title
Effective water disinfection using silver nanoparticle containing silica beads
Author
채영규
Keywords
Silica beads; Silver nanoparticles; Water disinfection; Antibacterial material
Issue Date
2013-02
Publisher
Elsevier Science B.V., Amsterdam.
Citation
Applied surface science, Feb 2013, 266, P.280-287
Abstract
The shortage of safe drinking water in developing countries and at the sites of natural disaster has spurred scientists to develop more effective materials for water disinfection at the point of use. In the present study, silver nanoparticle supported silica beads (Ag-NPBs) with sizes ranging from 0.5 to 1 mm were prepared, and their potential for water disinfection was examined. Escherichia coli was utilized to assess water disinfection potential by flow tests using a filter column filled with Ag-NPBs. Ag-NPBs inactivated > 99% of E. coli with a contact time of several seconds when the input water had a bacterial load of approximately 10(6) colony-forming units per mL. Ag-NPBs have an antibacterial capacity of 4.5 L/g. The effect of ammonium and urea on the release rate of silver into filtrate was investigated. The results suggest that Ag-NPBs could be an effective material for water disinfection. (c) 2012 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0169433212021538?via%3Dihubhttp://hdl.handle.net/20.500.11754/44418
ISSN
0169-4332
DOI
10.1016/j.apsusc.2012.11.168
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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