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Environ Sci Pollut Res Int


Title:Isovaleraldehyde elimination by UV/TiO2 photocatalysis: comparative study of the process at different reactors configurations and scales
Author(s):Assadi AA; Bouzaza A; Wolbert D; Petit P;
Address:"Laboratoire Sciences Chimiques de Rennes-equipe Chimie et Ingenierie des Procedes, UMR 6226 CNRS, ENSCR-11, allee de Beaulieu, 508307-35708, Rennes, France"
Journal Title:Environ Sci Pollut Res Int
Year:2014
Volume:20140227
Issue:19
Page Number:11178 - 11188
DOI: 10.1007/s11356-014-2603-7
ISSN/ISBN:1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:"A proposal for scaling-up the photocatalytic reactors is described and applied to the coated catalytic walls with a thin layer of titanium dioxide under the near ultraviolet (UV) irradiation. In this context, the photocatalytic degradation of isovaleraldehyde in gas phase is studied. In fact, the removal capacity is compared at different continuous reactors: a photocatalytic cylindrical reactor, planar reactor, and pilot unit. Results show that laboratory results can be useful for reactor design and scale-up. The flowrate increases lead to the removal capacity increases also. For example, with pilot unit, when flowrate extends four times, the degradation rate varies from 0.14 to 0.38 g h(-1) mcat (-2). The influence of UV intensity is also studied. When this parameter increases, both degradation rate and overall mineralization are enhanced. Moreover, the effects of inlet concentration, flowrate, geometries, and size of reactors on the removal capacity are also studied"
Keywords:Aldehydes/chemistry/*isolation & purification Catalysis Environmental Pollution/*prevention & control *Photolysis Titanium/*chemistry *Ultraviolet Rays Volatile Organic Compounds/*chemistry Waste Management/*methods;
Notes:"MedlineAssadi, Aymen Amine Bouzaza, Abdelkrim Wolbert, Dominique Petit, Philippe eng Comparative Study Research Support, Non-U.S. Gov't Germany 2014/02/28 Environ Sci Pollut Res Int. 2014 Oct; 21(19):11178-88. doi: 10.1007/s11356-014-2603-7. Epub 2014 Feb 27"

 
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