Hydrodynamic cavitation and activated persulfate oxidation for degradation of bisphenol A: Kinetics and mechanism

COD removal from sucrose solution using hydrodynamic cavitation and hydrogen peroxide: a comparison between Venturi device and orifice plate

“…According to Capocelli et al (2014), the excess of cavitation in cavitation devices decreases the degradation rate due to the following reasons: 1-) increased likelihood of coalescence between cavities and reduced collapse intensity due to damping of the energy released at the implosion; and 2-) larger cavities resulting from coalescence escape the liquid without collapsing. This result was also recorded by Raut-Jadhav et al (2013), Gogate and Bhosale (2013), Rajoriya et al (2018) and Choi et al (2018), who observed that the cavity cloud formation reduced the imidacloprid (neonicotinoid class of insecticide), orange acid-II (OA-II), textile effluent, and bisphenol A removal efficiency, respectively. E EO showed similar behavior at pressures 2.0, 4.0 and 6.0 bar, in which the electrical energy per order increased over time.…”

“…COD removal from an effluent generated by a soft drink industry Although many studies have investigated the hydrodynamic cavitation efficiency in removing synthetic pollutants (PARSA;ZONOUZIAN, 2013;MUSMARRA et al, 2016;CHOI et al, 2018), few studies investigated the use of actual effluents with high COD concentration, so far. According to Rajoriya et al (2018), it is necessary testing the actual effluent before the hydrodynamic cavitation application on an industrial scale.…”

“…Hydrodynamic cavitation is generated by liquids passing through physical constrictions such as orifice plates (HILARES et al, 2017), Venturi devices (CHOI et al, 2018) or partially closed valves (LI;SONG;YU, 2014). Microbubbles are generated when the pressure in the constriction falls below the vapor pressure of the liquid and they implode when the pressure of the liquid is recovered downstream of the constriction.…”

“…Many studies on hydrodynamic cavitation have been conducted in recent years to assess the cavitation potential to degrade specific organic compounds such as insecticides, dyes, endocrine disruptors, medicinal products, pesticides, among others (SAHARAN et al, 2011;RAUT-JADHAV et al, 2013;PATIL;BOTE;GOGATE, 2014;MUSMARRA et al, 2016;CHOI et al, 2018). Although cavitation is capable of degrading different compounds, it is essential conducting studies comparing the efficiency of cavitation-generating devices (or chambers), such as orifice plates and Venturi devices, to help optimizing and consolidating the hydrodynamic cavitation as wastewater treatment technique.…”

Controlled Hydrodynamic Cavitation: A Review of Recent Advances and Perspectives for Greener Processing

“…The complete degradation of KSCN was obtained via the combination of HC/H 2 O 2 /O 3 /CuO, whereas maximum degradation of 86.5% could be achieved via HC/O 3 /CuO. First-time application of the HC/persulfate (PS) process was implemented in the removal of Bisphenol A (BPA) [87]. With the increase in PS loading and solution temperature, the degradation rate constant increased.…”