Effective water disinfection using silver nanoparticle containing silica beads

被引：75

作者：

Dang Viet Quang ^{[1
,3
]}

Sarawade, Pradip B. ^{[1
]}

Jeon, Sun Jeong ^{[1
]}

Kim, Sang Hoon ^{[2
]}

Kim, Jong-Kil

Chai, Young Gyu ^{[2
]}

Kim, Hee Taik ^{[1
]}

机构：

[1] Hanyang Univ, Dept Fine Chem Engn, Ansan 426791, Gyeonggi Do, South Korea

[2] Hanyang Univ, Div Mol & Life Sci, Ansan 426791, Gyeonggi Do, South Korea

[3] Vietnam Acad Sci & Technol, Inst Environm Technol, Hanoi, Vietnam

来源：

APPLIED SURFACE SCIENCE | 2013年 / 266卷

关键词：

Silica beads; Silver nanoparticles; Water disinfection; Antibacterial material; HOUSEHOLD DRINKING-WATER;

D O I：

10.1016/j.apsusc.2012.11.168

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：

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.

引用

页码：280 / 287

页数：8

共 25 条

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