Degradation of Volatile Organic Compounds and Pesticides by Heterogeneous Photocatalysis with Titanium Dioxide

• Autores: Tuesta, Erika G., Zenitagoya, Yuri, Ponce, Silvia, Gutarra, Abel
• Formato: artículo
• Fecha de Publicación: 2002
• Institución: Universidad Nacional de Ingeniería
• Repositorio: Revistas - Universidad Nacional de Ingeniería
• Lenguaje: español
• OAI Identifier: oai:oai:revistas.uni.edu.pe:article/506
• Enlace del recurso: https://revistas.uni.edu.pe/index.php/tecnia/article/view/506
• Nivel de acceso: acceso abierto

A new technology for photocatalytic degradation of organic pollutants was investigated. It is based on photocatalytical properties of TiO, nanoparticles, under UV radiation. Four aliphatic alcohols: methanol, ethanol, 2-propanol and 1-butanol, as well as a pesticide: cypermetrhin,where irradiated on nanoparticles of TiO, photocatalist. A cylindrical photoreactor which use a medium pressure Hg lamp, as UV radiation source, was specially designed for this work. Our system was able to follow in situ degradation using a Fourier Transform Infrared Spectrometer (FT-IR) with a gas cell. From infrared spectra obtained a reaction mechanism was proposed. After few minutes of irradiation, complete mineralization were obtained, which indicates that photocatalytic method is an effective technique for degradation to this kind of pollutants.