Related Experiment Video
Updated: May 14, 2026

A Complete Method for Evaluating the Performance of Photocatalysts for the Degradation of Antibiotics in Environmental Remediation
Published on: October 6, 2022
Photocatalytic Disinfection of Coliform Bacteria Using UV/TiO2
Ar Rahmani1, Mr Samarghandi, Mt Samadi
1Dept. of Environmental Health Engineering, Faculty of Public Health and Center for Health Research, Hamadan University of Medical Sciences, Iran.
Background:
There are great interests in photocatalytic oxidation of contaminants using titanium dioxide in recent years. The main objective of this research was to study photocatalytic disinfection of Coliform bacteria as water microbial pollution index using TiO2 and a low pressure UV lamp in a batch reactor.
Methods:
The polluted water was prepared by adding a colony of Coliform in raw water and in separate stages was contacted with UV, TiO2 and combination of them and various parameters such as contact time, pH and amount of TiO2 were studied in terms of their effect on reaction progress.
Results:
The results showed that in simultaneous presence of both UV ray and TiO2, there was the most effective disinfection of Coliform. This study showed that 100% of Coliform was killed by irradiation for 60-75 min. in the presence of 0.8 gr l-1 TiO2 in pH=7.0.
Conclusion:
Based on the results, UV/TiO2 process may be effectively applied for disinfection of polluted water and can be suggested as a effective purifying method for water disinfection.
More Related Videos
Related Concept Videos
Physical Methods for Controlling Microbial Growth: Radiation and Filtration
Methods of Sterilization II: Chemical Methods
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
Cleaning, Sterilization, and Disinfection
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
Methods of Sterilization I: Physical Methods
Steam sterilization uses non-toxic, low-cost moist heat in the form of saturated steam under pressure, which is fast, microbicidal, and sporicidal, and quickly warms and penetrates fabrics. Autoclaves, or steam sterilizers, expose each item to direct steam contact for a predetermined time at the necessary...
Microbial Bioremediation of Uranium

