Photocatalytic Removal of Pseudomonas Aeruginosa from Water Using Titanium Dioxide Nanoparticles and UV Irradiation
Journal Title: Journal of Human Environment and Health Promotion - Year 2015, Vol 1, Issue 1
Abstract
Background: Titanium dioxide (TiO2)-mediated photocatalysis has been found to be an efficient method of water treatment and is capable of degrading a wide range of organic pollutants and microbial agents with high efficiency. The microorganism Pseudomonas aeruginosa is resistant to chemicals and UV irradiation. Bacteria which are resistant to UV-induced oxidative damage of the cell membrane are susceptible to photocatalytic technology. The main objective of this research was to examine the photocatalytic removal of P. aeruginosa upon UV irradiation in the presence of TiO2 nanoparticles. Methods: Polluted water samples were prepared by the addition of P. aeruginosa colonies into water, followed by contact with UV, TiO2, or a combination of the two in separate stages. The effect of various parameters, including contact time, pH, and TiO2 concentration, on reaction efficiency was examined. Results: The highest efficiency of bacterial disinfection was achieved with UV irradiation in the presence of TiO2 nanoparticles, with complete (100%) removal of P. aeruginosa observed upon irradiation for 60 min in the presence of 0.4 g/L TiO2 under conditions of neutral pH. Conclusions: The results of this study suggest that from a technical and economic perspective, the UV/TiO2 process may be effectively applied for the disinfection of polluted water. This process could be considered a promising method of cleaning and purification, and applicable for water disinfection.
Authors and Affiliations
Roya Alimoradzadeh*, Ali Assadi, Fatemeh Afsharb, Ali Reza Rahmani, Mohammad Reza Samarghandi
Keywords
Related Articles
- EP ID EP183024
- DOI -
- Views 111
- Downloads 0
Photocatalytic Degradation of Methyl Tert-Butyl Ether (MTBE) from Aqueous Solution: A Review
Nowadays, underground water is the main source of drinking water that contamination to organic pollutants such as MTBE is an important issue. One of the suitable methods for these types of pollutants is the advanced oxid...
Removal of H2S and COD Using UV, Ferrate and UV/Ferrate from Municipal Wastewater
Background: The aim of this study is to compare UV, ferrate (VI) and UV/ferrate (VI) methods for removal of hydrogen sulfide and chemical oxygen demand (COD) from municipal wastewater under a continuous condition. Method...
Hazard Assessment Matrix; Results of a Delphi Study
Background: Identification of hazards is one of the most important parts of industries’ strategies. This can be done using a hazard matrix as an applicable tool which can also rank hazards properly. Methods: In this stu...
Knowledge, Attitude and Practice of the Households about Prevention of Cutaneous Leishmaniasis, Iran, Shiraz at 2016
Background: The aim of this study was to investigate the effects of knowledge, attitude and practice of the households on the prevention and control Cutaneous Leishmaniasis. Methods: This study was a cross-sectional, ana...
The Role of Economy in Taxi Drivers’ Safety: A Qualitative Study
Background: Economic pressures are important factors contributing to accidents. Despite the importance of economic factors in the safety of taxi drivers, a few literatures have referred to these factor. Methods: This res...