scholarly journals Rigorous kinetic modelling with explicit radiation absorption effects of the photocatalytic inactivation of bacteria in water using suspended titanium dioxide

2011 ◽  
Vol 102 (3-4) ◽  
pp. 404-416 ◽  
Author(s):  
Javier Marugán ◽  
Rafael van Grieken ◽  
Cristina Pablos ◽  
M. Lucila Satuf ◽  
Alberto E. Cassano ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Kinetic Modelling ◽  
Radiation Absorption ◽  
Photocatalytic Inactivation ◽  
Inactivation Of Bacteria

Kinetic modelling of the photocatalytic inactivation of bacteria

2010 ◽  
Vol 61 (6) ◽  
pp. 1547-1553 ◽  
Author(s):  
Javier Marugán ◽  
Rafael van Grieken ◽  
Alberto E. Cassano ◽  
Orlando M. Alfano
Keyword(s):  
Kinetic Model ◽  
Kinetic Parameters ◽  
Catalyst Concentration ◽  
Kinetic Modelling ◽  
Kinetic Constant ◽  
Water Disinfection ◽  
Radiation Absorption ◽  
Simple Modification ◽  
Model Based ◽  
Photocatalytic Inactivation

This work analyzes the kinetic modelling of the photocatalytic inactivation of E. coli in water using different types of kinetic models; from an empirical equation to an intrinsic kinetic model including explicit radiation absorption effects. Simple empirical equations lead to lower fitting errors, but require a total of 12 parameters to reproduce the results of four inactivation curves when the catalyst concentration was increased. Moreover, these parameters have no physical meaning and cannot be extrapolated to different experimental conditions. The use of a pseudo-mechanistic model based on a simplified reaction mechanism reduces the number of required kinetic parameters to 6, being the kinetic constant the only parameter that depends on the catalyst concentration. Finally, a simple modification of a kinetic model based on the intrinsic mechanism of photocatalytic reactions including explicit radiation absorption effects achieved the fitting of all the experiments with only three parameters. The main advantage of this approach is that the kinetic parameters estimated for the model become independent of the irradiation form, as well as the reactor size and its geometrical configuration, providing the necessary information for scaling-up and design of commercial-scale photoreactors for water disinfection.

Visible light induced photocatalytic inactivation of bacteria by modified titanium dioxide films on organic polymers

2015 ◽  
Vol 14 (3) ◽  
pp. 514-519 ◽  
Author(s):  
Rafał Sadowski ◽  
Magdalena Strus ◽  
Marta Buchalska ◽  
Piotr B. Heczko ◽  
Wojciech Macyk
Keyword(s):  
Thin Film ◽  
Titanium Dioxide ◽  
Low Temperature ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Titanium Dioxide Films ◽  
Photocatalytic Inactivation ◽  
Inactivation Of Bacteria

A transparent polypropylene foil pre-treated with a low temperature plasma and covered with sensitized, nanocrystalline TiO2 thin film, appears to be a useful, self-sterilizing material activated upon visible light irradiation.

scholarly journals Monolithic Ceramic Foams for Ultrafast Photocatalytic Inactivation of Bacteria

2009 ◽  
Vol 92 (8) ◽  
pp. 1648-1654 ◽  
Author(s):  
Pinggui Wu ◽  
Rongcai Xie ◽  
Kari Imlay ◽  
Jian Ku Shang
Keyword(s):  
Ceramic Foams ◽  
Photocatalytic Inactivation ◽  
Inactivation Of Bacteria

Plasmonic Ag as electron-transfer mediators in Bi2MoO6/Ag-AgCl for efficient photocatalytic inactivation of bacteria

2020 ◽  
Vol 382 ◽  
pp. 122762 ◽  
Author(s):  
Mingmei Li ◽  
Deguan Li ◽  
Zhiruo Zhou ◽  
Pengfei Wang ◽  
Xueyue Mi ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Inactivation ◽  
Inactivation Of Bacteria

Visible light inactivation of bacteria and fungi by modified titanium dioxide

2007 ◽  
Vol 6 (6) ◽  
pp. 642-648 ◽  
Author(s):  
Dariusz Mitoraj ◽  
Agnieszka Jańczyk ◽  
Magdalena Strus ◽  
Horst Kisch ◽  
Grażyna Stochel ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Bacteria And Fungi ◽  
Inactivation Of Bacteria

A Recyclable Mineral Catalyst for Visible-Light-Driven Photocatalytic Inactivation of Bacteria: Natural Magnetic Sphalerite

2013 ◽  
Vol 47 (19) ◽  
pp. 11166-11173 ◽  
Author(s):  
Dehua Xia ◽  
Tsz Wai Ng ◽  
Taicheng An ◽  
Guiying Li ◽  
Yan Li ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Inactivation ◽  
Visible Light Driven ◽  
Inactivation Of Bacteria

Effect of depositing silver nanoparticles on BiVO4in enhancing visible light photocatalytic inactivation of bacteria in water

2014 ◽  
Vol 2 (17) ◽  
pp. 6209-6217 ◽  
Author(s):  
Amin Yoosefi Booshehri ◽  
Simon Chun-Kiat Goh ◽  
Jindui Hong ◽  
Rongrong Jiang ◽  
Rong Xu
Keyword(s):  
Reactive Oxygen Species ◽  
Silver Nanoparticles ◽  
Visible Light ◽  
Ag Nanoparticles ◽  
Oxygen Species ◽  
Electron Hole ◽  
Natural Sunlight ◽  
Photocatalytic Inactivation ◽  
Inactivation Of Bacteria ◽  
Visible Light Photocatalytic

Metallic Ag nanoparticles deposited on BiVO4promote the separation of photo-induced electron/hole pairs for the generation of reactive oxygen species, leading to excellent photocatalytic disinfection activity under both visible light and natural sunlight.

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