Bacterial inactivation kinetics of a photo-disinfection system using novel titania-impregnated kaolinite photocatalyst

Chong, Meng Nan; Jin, Bo; Saint, Christopher P.

doi:10.1016/j.cej.2011.03.024

Cited by 57 publications

(15 citation statements)

References 47 publications

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“…K-TiO 2 composites with white fine particles, thermally stable, chemically inert at pH of 4-9 and non-toxic are suitable for photodegradation of organic pollutants and bacterial photodisinfection in the water treatment process; filler in the paper industry and UV filters [9,20,21,35,44,45]. The effect of the heat treatment in the KT18, KT48 and pure kaolinite samples was studied by the TGA-DTA analyses and the results are essentially presented in Fig.…”

Section: Thermal Analysismentioning

confidence: 99%

Sol–gel synthesis of photoactive kaolinite-titania: Effect of the preparation method and their photocatalytic properties

Shao

Engole

Imran

et al. 2015

Applied Surface Science

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Section: Thermal Analysismentioning

confidence: 99%

Sol–gel synthesis of photoactive kaolinite-titania: Effect of the preparation method and their photocatalytic properties

Shao

Engole

Imran

et al. 2015

Applied Surface Science

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“…The nano-powders were reported to have a high photocatalytic activity demonstrated by upwards of 99% of E. coli inactivation within 2 h of treatment. In addition, bacterial growth was further inhibited for 12 h. Chong et al [13] used the annular slurry photo reactor (ASP) and titania-impregnated kaolinite (TiO 2 -K) catalyst for a sewageisolated E. coli disinfection. They reported that the bacterial inactivation rate was pH-independent up to pH 7.0 with 120 min irradiation time.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic disinfection of Escherichia coli using TiO2 P25 and Cu-doped TiO2

Khraisheh

Al-Muhtaseb

et al. 2015

Journal of Industrial and Engineering Chemistry

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“…Disinfection is the most important stage in water treatment to prevent waterborne diseases and ensure that the water is free of pathogenic microorganisms (1,2).…”

Section: Introductionmentioning

confidence: 99%

Inactivation of Escherichia coli in Water by Combined Process of Silver Nanoparticle and Ultraviolet Radiation

Zazouli¹,

Yousefi²,

Kor³

et al. 2016

Health Scope

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Background: Now the goal of water disinfection is not just inactivation of pathogenic organisms, but other goals such reduction or minimization of disinfection by products (DBPs) formation, providing residue to control secondary infections, maintaining the disinfectant's residue in the water distribution system to take care of public health are important too. Objectives: The current study aimed to study the effectiveness of new technologies such as combined process of silver nanoparticles (AgNPs) with ultraviolet (UV) radiation on Escherichia coli inactivation as a water microbial pollution index and effects of some parameters on its efficiency. Methods: AgNPs with average diameter of 20 nm was used in the presence or absence of UV light for disinfection. Escherichia coli species were cultured according to the standard methods for water and wastewater examination. The results were reported as CFU/mL. Results: Results showed that the disinfection efficiency of the UV light and silver nanoparticles (UV + AgNPs) combined process was more than that of the catalyst AgNP. The maximum efficiencies of the three processes of UV, AgNPs and UV + AgNPs in 60 minutes were 66%, 89% and 99%, respectively. The efficiency decreased with increasing the colony densities. However, statistical least significant difference (LSD) test showed no significant impact on the two consecutive levels (P > 0.05). The removal efficiency increased with increasing the catalyst dose and contact time. The removal efficiency reached 100% when the catalyst dose was 0.4 mg/L at 20 minutes contact time. Conclusions: It was concluded that the efficiency of silver nanoparticles to remove E. coli increases under the UV light. Intensified disinfection practice was due to producing electrons, active holes and active radicals by irradiation of UV light on AgNPs.

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Bacterial inactivation kinetics of a photo-disinfection system using novel titania-impregnated kaolinite photocatalyst

Cited by 57 publications

References 47 publications

Sol–gel synthesis of photoactive kaolinite-titania: Effect of the preparation method and their photocatalytic properties

Sol–gel synthesis of photoactive kaolinite-titania: Effect of the preparation method and their photocatalytic properties

Photocatalytic disinfection of Escherichia coli using TiO2 P25 and Cu-doped TiO2

Inactivation of Escherichia coli in Water by Combined Process of Silver Nanoparticle and Ultraviolet Radiation

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