Photocatalytic oxidation (PCO) is a promising and emerging technique in controlling indoor air contaminants, including volatile organic compounds (VOCs). Numerous studies have been conducted to improve the effectiveness and performance of this technology. These include the development of new PCO configurations, energy-efficient catalysts (i.e., active under visible-light and dark conditions) and other parameters that control the process. However, most of the studies have been performed under laboratory conditions. Only limited research has been conducted under realistic indoor environmental conditions. This study investigated the possible application of novel PCO systems in cleaning indoor air. Mathematical modeling and simulation techniques were utilized to assess the potential use of some of these promising systems in the degradation of VOCs that can usually be found in offices, residential buildings, and other facilities.

Key words: catalyst, indoor air, mathematical model, photocatalytic oxidation, volatile organic compounds.