Error message

  • Deprecated function: Unparenthesized `a ? b : c ? d : e` is deprecated. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)` in include_once() (line 1439 of /home/science2016/public_html/includes/
  • Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 3557 of /home/science2016/public_html/includes/

Mechanism and Kinetic Regularities of Inactivating Effects of Cavitation on Microorganisms

Tetyana Vitenko and Olga Gashchyn
PDF icon full_text.pdf687.66 KB
Disinfective action of physical-chemical effects accompanying hydrodynamic cavitation on the microorganisms sanitary indices in water has been studied. Disinfection kinetics was found to be dependent on the cavitation field characteristics and the microbes population. Based on the structural-morphological investigation of the E.coli bacteria it was found that antimicrobial effect is obtained due to the mechanical rupture of cells and chemical disinfection, which results from the hydroxyl radicals and hydrogen peroxide effect. Mathematic model that allows predicting the disinfection result under the hydrodynamic cavitation has been developed. The effect of chemicals on E.coli microorganisms under hydrodynamic cavitation has been investigated. Adding of AgNO3 or hydrogen peroxide in the cavitation installation makes it possible to reduce the disinfection time and to decrease the chemical oxides concentration by 50–70 %, which is caused by the synergism effect.

[1] Potapchenko N., Savluk S., Horchev V. et al.: Khimiya i Techn. Vody, 1997, 19, 315.
[2] Kulskiy L. (Ed.): Intensifikatsiya Processov Obezzarazhyvaniya Vody. Nauk. Dumka, Kyiv 1978.
[3] Ambulgekar G., Samant S. and Pandit A. : Ultrason Sonochem., 2005, 12, 85.
[4] Balasundaram B. and Harrison S.: Biotechnol. Progr., 2006, 22, 907.
[5] Gogate P. and Pandit A.: Ultrason Sonochem., 2005, 12, 21.
[6] Grübel K.: Thesis for D.Sc., Poland, Czestochowa 2008.
[7] Jyoti K. and Pandit A.: Water Research, 2004, 38, 2249.
[8] Shevchuk L., Strogan O. and Koval I.: Chem. & Chem. Techn., 2012, 6, 223.
[9] Gashchyn O. and Vitenko T.: Visnyku Skhidnoukr. Nats. Univ. im. V. Dalya , 2007, 109, 49.
[10] Sivacumar M. and Pandit A.: Ultrason. Sonochem, 2004, 9, 123.
[11] Vitenko T.: Thesis for D.Sc., Ukraine, Lviv 2010.
[12] Vitenko T. (Ed.): Hidrodynamichna Kavitatsiya u Masoobminnykh Khimichnykh i Biolohichnykh protsesakh. TDTU im. I Pulyuya, Ternopil 2009.
[13] Gashchyn O. and Vitenko T.: J. Water Chem. & Techn., 2008, 30, 322.
[14] Gashchyn O. and Vitenko T.: Enerhetyka ta Elektryfikatsiya, 2009, 1, 49.
[15] Jyoti K. and Pandit A.: Ultrason. Sonochem., 2003, 10, 255.
[16] Potapchenko N., Kosynova V., Illyashenko V et al.: Khimiya i Techn. Vody, 1995, 3, 311.
[17] Gashchyn O. and Vitenko T.: Ekotekhn. i Resursosberezh.,2007, 3, 44.
[18] Kochemasova Z., Efremova S. and Rybakova A.: Sanytarnaya Mikrobiologia i Virusologia. Medytsyna, Мoskwa 1987.
[19] Nakaz Ministerstva Okhorony Zdorovya Ukrayiny “Voda pytna. Hihiyenichni vymohy do yakosti vody tsentralizovanoho hospodars'ko-pytnoho vodopostachannya”. Nakazy MOZ № 383 vid 23 hrudnya 1996, 9-11.
[20] Koval I., Kislenko V., Shevchuk L. et al.: Chem. & Chem. Techn., 2011, 5, 463.