Effects of Magnetic Flux Density on the Population of Escherichia coli in River Njoro Water

Thirika Anne^1, , Ndiritu Francis¹ and Kiruki Silas²

¹Department of Physics, Faculty of Science, Egerton University, P.O. BOX 536 Njoro, Kenya

²Department of Physical Sciences, Chuka University, P.O. BOX 109 Chuka, Kenya

Cite this paper:
Thirika Anne, Ndiritu Francis and Kiruki Silas. Effects of Magnetic Flux Density on the Population of Escherichia coli in River Njoro Water. International Journal of Physics. 2016; 4(4):113-118. doi: 10.12691/ijp-4-4-5

Abstract

In this study, the experimental results of the concentration of Escherichia coli in water exposed to magnetic flux density are presented. Water samples were collected from River Njoro, Nakuru County, Kenya. The initial Escherichia coli (E.coli) counts for the samples were obtained using Membrane Filtration techniques. The samples were then exposed to different magnetic flux densities (2mT, 6mT and 10mT) at time intervals of 6 hours and 18 hours for each magnetic flux. Membrane filtration was also done after magnetic treatment of the samples. The data obtained was photographed and presented in tables and bar graphs. The maximum disinfection efficiency was 82.2% for bacteria exposed to a magnetic flux of 10 mT for 6 hours. This study proved that magnetic field can be used as inhibitory factor against the E.coli.

Keywords:
Magnetic Flux Density (MFD) Colony Forming Units (CFU) Escherichia Coli (E. coli)

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