Inactivation of E. Coli Using ZnO Nanofluids and Ultrasound

Abstract:

Combination of disinfection method gives advantages. In this work, inactivation of E. coli using ZnO nanofluids and ultrasound is evaluated. Growth curves of bacteria were investigated to reveal the inactivation activities of ZnO nanofluids and ultrasound. The effects of combination of ZnO nanofluids and ultrasound, ultrasound time, ultrasound induction point and the induction order of ZnO nanofluids and ultrasound were studied. The results suggested that combination of ZnO nanofluids and ultrasound gives better inactivation effect on E. coli when comparing with single disinfection method. Ultrasound for 10 s helped ZnO nanofluids inhibiting bacteria better than ultrasound for 30 s /60 s. Ultrasound induction point (at 0 hr, 2 hr or 4hr) did not affect on ZnO nanofluids to exhibit the inhibiting property. Induction ultrasound prior to adding ZnO nanofluids showed the better inactivation effect on E. coli. The results also displayed that in this work, ultrasound was mainly worked as a pre-treatment step, instead of a disinfection method.

• Periodical: Advanced Materials Research (Volumes 1004-1005)
• Pages: 978-982
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.978
• Online since: August 2014
• Authors: Ling Ling Zhang, Wei Qiang Sun, Yu Xia, Ya Ping Lv
• Keywords: Antibacterial, E. coli, Inactivation, Nanofluid, Photocatalysis, Ultrasound, ZNO

References

[1] I. Hua and J.E. Thompson. Wat. Res. Vol 34(2000), p.3888.

[2] P. Piyasena, E. Mohareb and R.C. McKellar. Inter J. Food Microbio. Vol 87 (2003), p.207.

[3] S. Gao, G.D. Lewis, M. Ashokkumar and Y. Hemar. Ultrason Sonochem. Vol 21 (2014), p.454.

[4] P. Piyasena, E. Mohareb and R.C. McKellar. Inter J. Food Microbio. Vol 87 (2003), p.207.

[5] S. Gao, G.D. Lewis, M. Ashokkumar and Y. Hemar. Ultrason Sonochem. Vol 21 (2014), p.446.

[6] K.K. Jyoti and A.B. Pandit. Biochem Eng J. Vol 7 (2001), p.201.

[7] A. Simon-Deckers, S. Loo, M. Mayne-L'Hermite, N. Herlin-Boime, N. Menguy, C. Reynaud, B. Gouget and M. Carriere. Environ Sci and Technol. Vol 43 (2009), p.8423.

DOI: 10.1021/es9016975

[8] L.L. Zhang, Y.H. Jiang, Y.L. Ding, M. Povey and D. York. J Nanopart Res. Vol 9 (2007), p.479.

[9] L.L. Zhang, Y.L. Ding, M. Povey, M. and D. York. Prog Nat Sci. Vol 18 (2008), p.939.

[10] N. Lydakis-Simantiris, D. Riga, E. Katsivela, D. Mantzavinos and N.P. Xekoukoulotakis. Desalination. Vol 250 (2010), p.351.

DOI: 10.1016/j.desal.2009.09.055

[11] T. Blume and U. Neis. Ultrason SonochemVol 11(2004), p.333.

[12] V. Naddeo, M. Landi, V. Belgiorno and R.M.A. Napoli. J. Hazardous mater. Vol 168(2009), p.925.

[13] G.R. Burleson, T.M. Murray and M. Pollard. Appl. Microbiol. Vol 29 (1975), p.340.

[14] M.F. Dadjour, C. Ogino, S. Matsumura and N. Shimizu. Biochem Eng. J. Vol 25(2005), p.243.

[15] M.F. Dadjour, C. Ogino, S. Matsumura, S. Nakamura and N. Shimizu. Water Res Vol 40(2006), p.1137.

[16] S. Drakopoulou, S. Terzakis, M.S. Fountoulakis, D. Mantzavinos and T. Manios. Ultrason Sonochem. Vol 16 (2009), p.629.

[17] J.T. Seil and T.J. Webster. Nanotechnology. Vol 23 (2012), p.495101.

[18] L.L. Zhang, Y.H. Jiang, Y.L. Ding, N. Daskalakis, L. Jeuken, M. Povey, A.J. O'Neill, D.W. York. J Nanopart Res. Vol 12 (2010), p.1625.