Heterogeneous Catalytic and Non-Catalytic Supercritical Water Oxidation of Organic Pollutants in Industrial Wastewaters Effect of Operational Parameters

This work reports supercritical water oxidation (SCWO) of organic pollutants in industrial wastewater the absence and presence catalysts. To increase efficiency process, SCWO compounds was performed various iron- manganese-containing heterogeneous catalysts (Fe-Ac, Fe-OH, Mn-Al). The catalytic non-catalytic from PJSC “Nizhnekamskneftekhim”, generated epoxidation propylene with ethylbenzene hydroperoxide process producing oxide styrene (PO/SM), performed. effect operational parameters (temperature, pressure, residence time, type catalysts, oxygen excess ratio, etc.) on studied. studied a flow reactor induction heating under different temperatures (between 673.15 873.15 K) at pressure 22.5 MPa. reaction time ranged 1.8 to 4.83 min. Compressed air used as an oxidizing agent (oxidant) oxidant ratio two four. A pseudo-first-order model expressed kinetics processes, rate constants were evaluated. In present work, order optimize operation we thermodynamic properties near- by taking into account asymmetric behavior liquid–vapor coexistence curve.