"Cavitational reactor for advanced treatment of contaminated water: the effect of recovery pressure"

This article deals with study of hydrodynamic cavitation in a Venturi reactor by considering the degradation of p-nitrophenol and the numerical simulation of a cavitating bubble in the explored experimental conditions. The parameters depicting the cavitation performances are reported for several experimental conditions. The best result of pNP mass removed at 30 min was found by setting the inlet pressure at 0.70 MPa and the recovery one at 0.38 MPa (≈40%), while the best performances in terms of pNP conversion per unit energy consumed were observed at 0.40 MPa (2.41 mg/MJ). The study represents a step forward in the work carried out by our research group to gain theoretical insight and optimize cavitation for advanced wastewater treatment