Impact of different frequencies in the entrapment of bacterial pathogens from drinking water using dielectrophoretic phenomena

• Published in: Химия и технология воды
• Date: 2016
• Main Authors: Sankaranarayanan, A., Prabu Sankarlal, K.M., Raja, D.
• Format: Article
• Language: English
• Published: Інститут колоїдної хімії та хімії води ім. А.В. Думанського НАН України 2016
• Subjects: Биологические методы очистки воды
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/160777
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Impact of different frequencies in the entrapment of bacterial pathogens from drinking water using dielectrophoretic phenomena / A. Sankaranarayanan, K.M. Prabu Sankarlal, D. Raja // Химия и технология воды. — 2016. — Т. 38, № 2. — С. 210-219. — Бібліогр.: 16 назв. — англ.

The article has investigated the removal of water borne pathogens using dielectrophoresis (DEP) filter which is energized by varying the frequency of the applied potential from 10 kHz to 2 MHz with different voltage levels of 5; 10; 15 and 20 V. Separate experiments are conducted in artificially contaminated water samples with Escherichia coli, Staphylococcus aureus and Vibrio cholera up to 2 h. The impact of signal frequency and voltages on DEP based water treatment system has been analyzed statistically. Results have demonstrated that an ac signal of 20 V with frequency range of 500 kHz to 2 MHZ is suitable to remove the tested bacterial population and the rate of removal of E. coli is the highest with a dielectrophoretic filtration efficiency of 77,1%.