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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064


KONDO, Márcia Matiko; ORLANDA, José Fábio F.; FERREIRA, Maria da Glória A. B.  and  GRASSI, Marco Tadeu. Proposition of a photocatalytic reactor to inactivate airborne microorganisms. Quím. Nova [online]. 2003, vol.26, n.1, pp.133-135. ISSN 0100-4042.

The TiO2/UV photocatalytic reactor was investigated as an alternative system to inactivate airborne microorganisms. The experiments performed in the absence of the catalyst showed that direct photolysis was not efficient to destruct microorganisms, with only 30% of inactivation. Similar inactivation percentage was obtained using TiO2 in absence of UV radiation. The destruction of microorganisms present in a contaminated indoor atmosphere, using the combination of TiO2/UV was very efficient, reaching more than 98% of destruction.

Keywords : microorganism inactivation; photocatalytic reactor; TiO2/UV irradiation.

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