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Type: Artigo de periódico
Title: Indoor air disinfection using a polyester supported TiO(2) photo-reactor
Author: Paschoalino, MP
Jardim, WF
Abstract: Among the decontamination methods applicable to indoor air, heterogeneous photocatalysis has received increasing attention in recent years. This decontamination method is based on the UV irradiation of a solid catalyst, normally TiO(2), aiming at the generation of highly reactive hydroxyl radicals. In this work, a novel way to prepare the photocatalyst was used, incorporating pure P-25 TiO(2) (Degussa) into polyester orthophthalic polymer. The film was coated onto the walls of a PVC reactor with a concentric 30 W germicidal lamp (254 nm). The efficiency of this prototype was evaluated against fungi and bacteria elimination in a 67 m(3) confined room. The system was very efficient for bacteria reduction, decreasing the bacterial count to below the detection limit (1 CFU/plate during 30-min sampling) after 2 h of operation at 195 l/min. For fungi, the gas-phase reactor showed to be less efficient and silver doping of the catalyst showed no increase in biocide activity.The use of a photocatalytic reactor based on TiO(2) incorporated onto polyester orthophtalic polymer has been tested at 195 l/min, showing good performance in the air disinfection of a 67 m(3) room.
Subject: TiO(2)
Heterogeneous photocatalysis
Photocatalytic reactor
Indoor air
Country: EUA
Editor: Wiley-blackwell Publishing, Inc
Citation: Indoor Air. Wiley-blackwell Publishing, Inc, v. 18, n. 6, n. 473, n. 479, 2008.
Rights: fechado
Identifier DOI: 10.1111/j.1600-0668.2008.00548.x
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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