Photocatalytic oxidation (PCO) is a technology that can be envisaged to purify indoor air. During the evaluation of photocatalytic air cleaning efficiency, two main aspects are often not sufficiently taken into account: i) Indoor pollutants are present at ppbv levels whereas the concentration of water vapour is comprised between 3600 and 20 000 ppmv; and ii) Intermediate products are released in the gas phase and their concentrations must be thoroughly measured. A multi-pass dynamic reactor was implemented to study the photocatalytic oxidation of n-decane, toluene and trichloroethylene, individually and mixed together. The initial concentration of each compound was fixed at 800 ppbv. The water vapor concentration was set at 13 000 ppmv. The photocatalytic media was supplied by Ahlstr�m Paper Group. Fourteen reaction intermediates from different chemical groups were quantified during the PCO of the mixture of VOCs. The influence of the airflow on the formation of reaction intermediates was also assessed.

TiO<sub>2 </sub>photocatalytic oxidation of indoor VOCs at ppb levels in a multi-pass dynamic reactor: Influence of VOCs mixture on reaction intermediates concentrations

245th National Meeting (2013)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

TiO2 photocatalytic oxidation of indoor VOCs at ppb levels in a multi-pass dynamic reactor: Influence of VOCs mixture on reaction intermediates concentrations

TiO₂photocatalytic oxidation of indoor VOCs at ppb levels in a multi-pass dynamic reactor: Influence of VOCs mixture on reaction intermediates concentrations