DIOXIDE TITANIUM NANOPARTICLES EFFICIENCY ON REMOVING WATER HETEROTROPHIC BACTERIA POPULATION
DOI:
https://doi.org/10.6092/issn.2281-4485/7820Keywords:
Heterotrophic Bacteria Population, TiO2Nanoparticles, Water pollution, Spread Plate MethodAbstract
Water source pollution is increasing in recent years and use of new methods of
contaminants removal is required. Nanotechnology is a suitable technique for
environmental applications. Titanium dioxide is one of most commonly used
nanoparticles containing interesting properties for water and wastewater treatment.
Purpose of this study was determination of nanoparticles efficiency for removing
of heterotrophic bacteria.Spread plate method was used for enumeration of
heterotrophic bacteria. Variables of pH, nanoparticle concentration, and contact
time were investigated to remove heterotrophic bacteria. pH 7, contact time 90
minutes and heterotrophic population 305 were optimum condition for maximum
removal efficiency. Investigation showed also suitability of titanium dioxide
nanoparticles for real water samples. It showed that TiO2 nanoparticles have good
antibacterial features, so that they were able to remove heterotrophic bacteria.
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