The application of TiO2 photocatalysis for disinfection of water contaminated with pathogenic micro-organisms: a review

  title={The application of TiO2 photocatalysis for disinfection of water contaminated with pathogenic micro-organisms: a review},
  author={Cathy McCullagh and Jeanette M.C. Robertson and Detlef W. Bahnemann and Peter K. J. Robertson},
  journal={Research on Chemical Intermediates},
The use of semiconductor photocatalysis for treatment of water and air has been the topic of intense research activity over the past 20 years. This powerful process has also been extended to the disinfection of environments contaminated with pathogenic micro-organisms. This review summarizes recent developments concerned with the photocatalytic treatment of water contaminated with pathogenic micro-organisms presenting a potential hazard to animals and human beings. 
Photocatalysis-A novel approach for solving various environmental and disinfection problems: A brief review
An overview of photocatalytic process in different sectors is presented, a safe, nontoxic, and relatively inexpensive disinfection method whose adaptability allows it to be used for many purposes. Expand
Applications of Photocatalytic Disinfection
Due to the superior ability of photocatalysis to inactivate a wide range of harmful microorganisms, it is being examined as a viable alternative to traditional disinfection methods such asExpand
Photocatalytic Disinfection and Removal of Emerging Pollutants from Effluents of Biological Wastewater Treatments, Using a Newly Developed Large-Scale Solar Simulator
The reuse of sewage water treatment is becoming a priority, especially in arid regions, where water is scarce. However, there is increasing concern about the presence of emerging micropollutantsExpand
Photocatalytic inactivation of E. coli in surface water using immobilised nanoparticle TiO2 films.
The photocatalytic and photolytic inactivation rates of Escherichia coli using immobilised nanoparticle TiO2 films were found to be significantly lower in surface water samples in comparison to distilled water, and the presence of nitrate and sulphate anions spiked into distilled water resulted in a decrease in the rate of photocatalyst disinfection. Expand
Photocatalytic reactors for environmental remediation: A review
Research in the field of photocatalytic reactors in the past three decades has been an area of extensive and diverse activity with an extensive range of suspended and fixed film photocatalystExpand
A Review of Heterogeneous Photocatalysis for Water and Surface Disinfection
The development of novel photocatalytic materials for use in disinfection applications is reviewed, taking account of materials, developed for other photoc atalytic applications, but which may be transferable for disinfection purposes. Expand
Inorganic materials for photocatalytic water disinfection
Traditional water disinfection methods such as chlorination and ozonation inevitably form harmful disinfection by-products (DBPs). UV irradiation is a safe alternative but it is very energyExpand
Solar photocatalysis for water disinfection: Materials and reactor design
As of 2010, access to clean drinking water is a human right according to UN regulations. Nevertheless, the number of people living in areas without safe drinking water is predicted to increase byExpand
Photocatalytic disinfection using titanium dioxide: spectrum and mechanism of antimicrobial activity
The activity has been shown to be capable of killing a wide range of Gram-negative and Gram-positive bacteria, filamentous and unicellular fungi, algae, protozoa, mammalian viruses and bacteriophage, and the killing activity is enhanced by the presence of other antimicrobial agents such as Cu and Ag. Expand
Kinetics and influence of water composition on photocatalytic disinfection and photocatalytic oxidation of pollutants
The results obtained in the evaluation of photocatalytic processes for the degradation of chemical pollutants cannot be always extrapolated to the inactivation of microorganisms. Expand


Evaluation of photocatalytic disinfection of crude water for drinking-water production
TiO2-photocatalysis disinfection experiments were carried out with both E. coli in distilled water and natural water samples from the Cauca River (Cali, Colombia). The experiments performed with E.Expand
The photocatalytic removal of bacterial pollutants from drinking water
Abstract Pathogens in drinking water supplies can be removed by sand filtration followed by chlorine or ozone disinfection. These processes reduce the possibility of any pathogens entering theExpand
Photochemical disinfection of Escherichia coli with a TiO2 colloid solution and a self-assembled TiO2 thin film
Abstract Effect of long-wavelength irradiated TiO2 colloid solutions on E. coli disinfection and the kinetics mechanism have been investigated. In addition, uniform thin films of TiO2 are depositedExpand
The photocatalytic disinfection of urban waste waters.
No consistent differences have been found between TiO2-photocatalysis and direct solar or UV-lamp light irradiation at natural sample pH (7.8) and the presence ofTiO2 increases the relative inactivation rate compared with the absence of the catalyst. Expand
Hydrogen peroxide enhanced photocatalytic oxidation of microcystin-lR using titanium dioxide
Abstract Cyanobacterial toxins present in drinking water sources pose a considerable threat to human health. Conventional water treatment systems have proven unreliable for the removal of theseExpand
Water disinfection by solar photocatalysis using compound parabolic collectors
Abstract TiO 2 solar photocatalysis has been proven to be a degradation process for aqueous organic contaminant leading to total mineralisation of a large number of compounds. Furthermore, theExpand
Environmental Applications of Semiconductor Photocatalysis
The civilian, commercial, and defense sectors of most advanced industrialized nations are faced with a tremendous set of environmental problems related to the remediation of hazardous wastes,Expand
Water disinfection using an immobilised titanium dioxide film in a photochemical reactor with electric field enhancement
We have produced an adherent defect TiO2 film reactor in which the performance is greatly improved by the application of a small positive bias (electric field enhancement) to boost hydroxyl radicalExpand
A comparison of the effectiveness of TiO2 photocatalysis and UVA photolysis for the destruction of three pathogenic micro-organisms
TiO2 photocatalysis has demonstrated efficacy as a treatment process for water contaminated with chemical pollutants. When exposed to UVA light TiO2 also demonstrates an effective bactericidalExpand
Photocatalytic bactericidal effect of TiO2 on Enterobacter cloacae: Comparative study with other Gram (−) bacteria
Abstract The bactericidal action of heterogeneous photocatalysis (UV-A/TiO 2 ) has been tested on Enterobacter cloacae , a microorganism very resistant to UV-A irradiation. Results have been comparedExpand