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Please use this identifier to cite or link to this item: http://dspace.utalca.cl/handle/1950/4593

Title: Effect of temperature on kraft black liquor degradation by ZnO-photoassisted catalysis
Authors: Villasenor, J.
Mansilla, H.D.
Keywords: Cellulose pulping effluent; ZnO photocatalysis; Kraft black liquor; Activation energy; Photodegradation kinetic; Zinc oxide
Issue Date: 1996
Publisher: Elsevier Science B.V.
Citation: Journal of Photochemistry and Photobiology A: Chemistry 93(2-3):205-209
Abstract: The ZnO-photocatalysed reaction of kraft black liquor, obtained from P. radiata pulping, was studied to determine the kinetic parameters that govern CO2 evolution. The mineralization reaction exhibits a first-order dependence on the dissolved oxygen concentration and a half-order dependence on the concentration of the substrate at 25°C. The catalysed reaction accounts for more than 95% of the CO2 production, at all temperatures studied, and the uncatalysed reaction accounts for 5%. The apparent activation energy of the catalysed process was estimated to be 43.1 kJ mol−1.
Description: Jorge Villaseñor and Héctor D. Mansilla. Faculty of Chemical Sciences, Department of Organic Chemistry, Renewable Resources Laboratory, Universidad de Concepción, Casilla 3-C, Concepción, Chile.
URI: http://dspace.utalca.cl/handle/1950/4593
ISSN: 1010-6030
Appears in Collections:Artículos en publicaciones ISI - Universidad de Talca

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