6533b83afe1ef96bd12a7a4e

RESEARCH PRODUCT

MODELING OF A TiO2-COATED QUARTZ -WOOL PACKED-BED PHOTOCATALYTIC REACTOR

Lucio RizzutiOrlando Mario AlfanoG. VellaAlberto E. CassanoGustavo Eduardo ImoberdorfAntonino Sclafani

subject

Packed bedSettore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciChemistryIngeniería de Procesos QuímicosProcess Chemistry and TechnologyQuartz woolSettore ING-IND/25 - Impianti Chimicipacked-bed reactor quartz wool photocatalysis TiO2 kinetics formic acid.Kinetic schemeMineralogyINGENIERÍAS Y TECNOLOGÍASKinetic energyCatalysisIngeniería QuímicaChemical engineeringMass transferPacked-bed reactorPhotocatalysisTiO2FiberPhysics::Chemical PhysicsPhotocatalysisPlug flow reactor modelAbsorption (electromagnetic radiation)General Environmental Science

description

A fixed-bed, photocatalytic laboratory reactor aimed to degrade pollutants from water streams was designed and built. Quartz wool coated with a thin film of TiO2 was employed as the reactor filling. The photocatalyst was placed in the reactor forming a loose packing to guarantee the intimate contact among reactants, photons, and the photocatalytic surface. This reactor was employed to study the photocatalytic decomposition of a model pollutant (formic acid). A reactor–radiation–reaction model was developed, which was comprised of the reactor mass balance, radiation model, and kinetic model for the degradation of formic acid. The local superficial rate of photon absorption, which was necessary to evaluate the kinetic, was obtained from the results of a radiation model. The Monte Carlo approach was employed to solve the radiation model, where the interaction between photons and the TiO2-coated fibers of the packing was considered. The kinetic model was derived from a plausible kinetic scheme. Experimental results obtained in the packed-bed reactor, operating in a differential mode and without mass transfer limitations, were used to estimate the parameters of the kinetic model. A satisfactory agreement was observed between model simulations with the derived parameters and experimental results, with a root mean square error less than 8.3%. Fil: Vella, G.. Università di Palermo; Italia Fil: Imoberdorf, Gustavo Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral; Argentina Fil: Sclafani, A.. Università di Palermo; Italia Fil: Cassano, Alberto Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral; Argentina Fil: Alfano, Orlando Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral; Argentina Fil: Rizzuti, L.. Università di Palermo; Italia

yearjournalcountryeditionlanguage
2010-06-07
10.1016/j.apcatb.2010.02.037http://hdl.handle.net/10447/57009