Thermal- and MnO 2 -Activated Peroxydisulfate for Diuron Removal from Water

Angelo Fenti, Antonio Minò and Stefano Salvestrini ()
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Angelo Fenti: Department of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, Italy
Antonio Minò: Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy
Stefano Salvestrini: Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, 81100 Caserta, Italy

Clean Technol., 2022, vol. 4, issue 4, 1-17

Abstract: In this work, a peroxydisulfate (PDS)-based advanced oxidation process was used for removing diuron from water. The effect of heat and MnO 2 as PDS activators was explored. It was found that diuron degradation obeyed zero-order kinetics in the presence of heat-activated PDS. The relative contribution of MnO 2 to the diuron degradation decreased with the increasing temperature. At the highest temperature investigated, T = 55 °C, complete diuron removal was achieved in less than 75 min. A kinetic model for describing the rate of diuron degradation was proposed and successfully applied to the experimental data.

Keywords: advanced oxidation processes; AOPs; persulfate; peroxydisulfate; MnO 2; diuron; heat activation; thermal activation; heterogeneous catalysis; homogeneous catalysis (search for similar items in EconPapers)
JEL-codes: Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2022
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