DIOXIDE TITANIUM NANOPARTICLES EFFICIENCY ON REMOVING WATER HETEROTROPHIC BACTERIA POPULATION

• Main Authors: Elham Asrari, Nader Gheraghpour
• Format: Article
• Language: English
• Published: University of Bologna 2018-03-01
• Series: EQA
• Subjects: Heterotrophic Bacteria Population, TiO2Nanoparticles, Water pollution, Spread Plate Method
• Online Access: https://eqa.unibo.it/article/view/7820

Water source pollution is increasing in recent years and use of new methods ofcontaminants removal is required. Nanotechnology is a suitable technique forenvironmental applications. Titanium dioxide is one of most commonly usednanoparticles containing interesting properties for water and wastewater treatment.Purpose of this study was determination of nanoparticles efficiency for removingof heterotrophic bacteria.Spread plate method was used for enumeration ofheterotrophic bacteria. Variables of pH, nanoparticle concentration, and contacttime were investigated to remove heterotrophic bacteria. pH 7, contact time 90minutes and heterotrophic population 305 were optimum condition for maximumremoval efficiency. Investigation showed also suitability of titanium dioxidenanoparticles for real water samples. It showed that TiO2 nanoparticles have goodantibacterial features, so that they were able to remove heterotrophic bacteria..