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Photocatalytic inactivation of Escherichia coli aqueous suspensions in a fixed-bed reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
53862 46987 2015 7 PDF Available
Title
Photocatalytic inactivation of Escherichia coli aqueous suspensions in a fixed-bed reactor
Abstract

•Photocatalytic disinfection of Escherichia coli in a fixed-bed, annular reactor.•A series-event disinfection scheme with explicit radiation absorption of the TiO2.•Modeling of the local rate of photon absorption by the Monte Carlo simulation.•The model was able to reproduce the evolution of viable bacteria concentrations.

A fixed-bed, annular photoreactor is studied for the photocatalytic disinfection of Escherichia coli aqueous suspensions. Experiments were carried out under UV radiation employing P25 titanium dioxide immobilized onto glass Raschig rings. The photoreactor performance has been simulated following a predicted procedure that takes into account explicitly the radiation absorption step and a series-event disinfection mechanism. The modeling of the radiation field was carried out by Monte Carlo simulation. The reactor model has been compared with experimental data, being able to reproduce the evolution of the concentration of viable bacteria under different bacteria initial concentrations and irradiation levels.

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Keywords
Fixed-bed reactor; Disinfection; Titanium dioxide; Monte Carlo method; Radiation absorption
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Photocatalytic inactivation of Escherichia coli aqueous suspensions in a fixed-bed reactor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 252, 1 September 2015, Pages 143–149
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Full-text PDF Download
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