
handle: 10495/7601
RESUMEN: En este trabajo se evaluó la degradación fotocatalítica de contaminantes acuosos provenientes de una industria de productos químicos, empleando un fotorreactor solar de placas planas de vidrio corrugado dispuestas en forma de cascada, sobre las cuales se soportaron películas de TiO2 (Degussa P-25) / SiO2, como sistema fotoactivo. Se estudió la influencia de tres variables en la eficiencia de descontaminación: cantidad de H2O2, volumen de agua a tratar y cantidad de TiO2 disperso, mediante un diseño de experimentos llevados a cabo en modo de operación discontinua por un periodo de 5 horas para cada ensayo. Los resultados obtenidos confirman a la Fotocatálisis Heterogénea (FH) como una tecnología viable de tratamiento en etapas previas a un tratamiento biológico ya que se alcanzaron porcentajes de reducción en la DQO que varían entre 6 y 46% y se obtuvieron efluentes biodegradables en todas las pruebas realizadas.
ABSTARCT: Wastewater of a chemical industry was treated in a photocatalytic process, using a solar photoreactor made of glass corrugated flat plates that had been set in cascade and using Titanium Dioxide (Degussa P-25) as photocatalyst that is supported on each one of them in film form. The influence of three variables in the decontamination efficiency were studied: amount of H2O2, volume of water and amount of dispersed TiO2, by means of the accomplishment of fifteen experiments carried out in discontinuous operation mode by a period of 5 hours for each test. The obtained results allow to establish that the FH is a viable technology of treatment like previous stage to a biological treatment since percentage of reduction in the DQO varies between 6 and 46% and was managed to reach a biodegradable effluent in all tests.
Technology, Tratamiento de aguas residuales industriales, Factory and trade waste, Heterogeneous Photocatalysis, Aguas residuales industriales, 530, Energía solar, Industrial wastewater, Solar energy, Aguas residuales industriales., Residuos industriales, Procesos Avanzados de Oxidación, Fotocatálisis heterogénea, Fotodegradación, Oxidación, Mining engineering. Metallurgy, Fotocatálisis Heterogénea, T, TN1-997, Fotorreactor solar, DQO (Demanda Química de Oxígeno, Fotorreactor, Solar Photoreactor, Advanced Oxidation Processes
Technology, Tratamiento de aguas residuales industriales, Factory and trade waste, Heterogeneous Photocatalysis, Aguas residuales industriales, 530, Energía solar, Industrial wastewater, Solar energy, Aguas residuales industriales., Residuos industriales, Procesos Avanzados de Oxidación, Fotocatálisis heterogénea, Fotodegradación, Oxidación, Mining engineering. Metallurgy, Fotocatálisis Heterogénea, T, TN1-997, Fotorreactor solar, DQO (Demanda Química de Oxígeno, Fotorreactor, Solar Photoreactor, Advanced Oxidation Processes
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