51. Preparation and characterisation of silver nanoparticle coated on cellulose paper: evaluation of their potential as antibacterial water filter.
- Author
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Praveena, Sarva Mangala, Han, Lim Suk, Than, Leslie Thian Lung, and Aris, Ahmad Zaharin
- Subjects
DRINKING water purification ,SILVER nanoparticles ,CELLULOSE ,SURFACE coatings ,ESCHERICHIA coli ,DRINKING water microbiology ,FILTER paper ,ANTIBACTERIAL agents - Abstract
This study investigates the ability of cellulose filter paper coated with silver nanoparticles to removeEscherichia colifrom drinking water. The cellulose filter paper was coated with silver nanoparticles by a chemical reduction method using two different ratios of sodium borohydride and silver nitrate. In consideration of drinking-water quality standards and non-carcinogenic health risks, the optimum sodium borohydride:silver nitrate ratio for coating the cellulose filter paper was determined by comparing the silver in the effluent afterE. coliremoval. For both ratios, 100%E. coliremoval was realised. In terms of the silver in the effluent, only the first two lowest concentrations for both ratios of sodium borohydride and silver nitrate were compliant with the drinking-water quality standards, demonstrating hazard quotients (HQs) between 0.084 and 0.484. On the basis of the highest level ofE. coliremoval with the lowest HQ value, the optimum sodium borohydride:silver nitrate ratio for coating the cellulose filter paper as an antibacterial water filter was 2:1 molar ratio (0.002 M:0.001 M). Silver nanoparticle-coated cellulose filter paper was found to be an inexpensive and easy-to-use emergency antibacterial water filter to generate clean drinking water. [ABSTRACT FROM PUBLISHER]
- Published
- 2016
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