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Water 2018, 10(3), 247;

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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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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