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Photocatalytic degradation of 4-chlorophenol: A kinetic study

Paper ID Volume ID Publish Year Pages File Format Full-Text
48259 46498 2008 13 PDF Available
Title
Photocatalytic degradation of 4-chlorophenol: A kinetic study
Abstract

A kinetic study of the photocatalytic degradation of 4-chlorophenol employing titanium dioxide is presented. Experiments were carried out in a cylindrical slurry reactor irradiated by UV lamps. The aromatic reaction intermediates were identified and quantified. Intrinsic expressions to represent the kinetics of 4-chlorophenol and the main intermediates, 4-chlorocatechol and hydroquinone, were derived from a proposed reaction scheme. These expressions include explicitly the effect of photon absorption on the reaction rate. The modeling of the radiation field in the reactor was accomplished by solving the radiative transfer equation with the discrete ordinate method. Experimental runs were performed by varying the catalyst concentration, the incident radiation, and the reactor length. The parameters of the kinetic model were estimated from the experiments by applying a non-linear regression procedure. Good agreement was obtained between model predictions and experimental data, with a root mean square error of 14.4%.

Keywords
4-Chlorophenol; Photocatalysis; Photon absorption; Kinetics
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 82, Issues 1–2, 16 July 2008, Pages 37–49
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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