Indoor Photocatalytic Paints Evaluation Under Different Working Conditions

SALVADORES, FEDERICO; ALFANO, ORLANDO MARIO; BALLARI, MARÍA DE LOS MILAGROS

Belo Horizonte

Encuentro; VIII Encontro sobre Aplicações Ambientais de Processos Oxidativos Avançados - II Congresso Iberoamericano de Processos Oxidativos Avançados (8 EPOA - 2 CIPOA); 2015

In the present work, different indoor photocatalytic paints were formulated employing for each one diverse amounts of a TiO2 powder commercially available which presents activity under visible light. These paints were illuminated with an ordinary fluorescent light and photocatalytic degradation of acetaldehyde, a representative VOC of indoor air, was assessed. Humidity and incident radiation level were varied during the study. An 84% of degradation was achieved with the paint that contains the maximum TiO2 powder amount, a 100% of illumination and the lowest humidity. On the other hand a near zero percent of conversion was measured for all the paints with the lowest incident radiation level.