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Water 2018, 10(3), 247; doi:10.3390/w10030247

Degradation of 4-Chlorophenol by Microwave-Enhanced Advanced Oxidation Processes: Kinetics and Influential Process Parameters

Process and Environmental Technology Lab, Department of Chemical Engineering, KU Leuven, J. De Nayerlaan 5, B-2860 Sint-Katelijne-Waver, Belgium
InOpSys NV, Zandvoortstraat 12A, B-2800 Mechelen, Belgium
Author to whom correspondence should be addressed.
Received: 16 January 2018 / Revised: 14 February 2018 / Accepted: 21 February 2018 / Published: 28 February 2018
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In this study, the degradation of 4-chlorophenol (4-CP) is investigated by using a combination of microwave (MW) irradiation and hydrogen peroxide as oxidant (the MW–H2O2-process). The influence of the critical parameters on the efficiency of the process is examined by applying Partial Least Square Regression (PLS) on a Design of Experiments (DOE). Also, a kinetic evaluation of the process is carried out. Results showed that the MW–H2O2-process is effective in the degradation of 4-CP. The most influential parameter of the MW–H2O2-process is the reaction temperature. Besides this parameter, the reaction time, initial 4-CP concentration, and initial hydrogen peroxide concentration have a (minor) influence on the 4-CP degradation. A maximum degradation efficiency within the levels of the DOE (remaining percentage of 4-CP of 34%) was achieved with an initial 4-CP concentration of 1000 mg/L, an initial H2O2 concentration of 11 g/L, reaction temperature of 180 °C, and reaction time of 20 min. The process follows pseudo first order reaction kinetics. View Full-Text
Keywords: 4-chlorophenol; microwave-enhanced AOP 4-chlorophenol; microwave-enhanced AOP

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Milh, H.; Van Eyck, K.; Dewil, R. Degradation of 4-Chlorophenol by Microwave-Enhanced Advanced Oxidation Processes: Kinetics and Influential Process Parameters. Water 2018, 10, 247.

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