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Comparison of photocatalytic systems including silver and titanium dioxide nanoparticles efficiencies for the E. coli removal from drinking water

Zazooli, M.A. and Kor, Y. and Alipourtomaj, O. and Safari, H. and Sarani, M. and Yarali, K. (2015) Comparison of photocatalytic systems including silver and titanium dioxide nanoparticles efficiencies for the E. coli removal from drinking water. Acta Medica Mediterranea, 31 (7). pp. 1461-1467.

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Abstract

The removal and destruction of organic contaminants in groundwater can be addressed through the impregnation of adsorbents with photoactive catalysts. In this paper removal trend of E. coli from drinking water examined by nano silver and nano titanium dioxide. To perform this, four different concentration of silver nano particles and titanium dioxide under UV radiation (with 247 nm- wavelength) used. The results showed the nano particles of silver and titanium reach to 100% disinfection efficiency at the concentrations of 0.4 mg/l (with 20 minutes contact time) and 0.8 mg/l (with 40 minutes contact time), respectively. For equal amounts of disinfectant and equal number of E. coli colonies in drinking water, disinfection potential for (nAg + V) is significantly higher than (nTiO2 + UV). When the nano particles concentration increases, the disinfection rate rises, and it was higher and faster done by the nano silver particles comparing to nano-titanium particles (Pvalue < 0.05, R²= 0.705).

Item Type: Article
Additional Information: cited By 0
Uncontrolled Keywords: disinfectant agent; drinking water; silver nanoparticle; titanium dioxide nanoparticle, Article; bacterial strain; bacterium colony; colony forming unit; contact time; controlled study; disinfection; Escherichia coli; nonhuman; particle size; photocatalysis; physical chemistry; spectral sensitivity; time; ultraviolet radiation; waste water management; water contamination
Subjects: مقالات نمایه شده محققین دانشگاه در سایت ,Web of Science ,Scopus
Divisions: معاونت تحقیقات و فناوری
Depositing User: GOUMS
Date Deposited: 10 Sep 2016 07:12
Last Modified: 15 Jan 2017 09:09
URI: http://eprints.goums.ac.ir/id/eprint/4766

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