Chemistry driven by suction

Enhanced effect of suction-cavitation on the ozonation of phenol

“…This is due to the good mass transfer of ozone induced by high water flow and the higher number of cycles in the given time. The effect of suction orifice on the ozonation of phenol is consistent with results seen in the decomposition of chloroform in aqueous solutions [28,35], indicating that the hydrodynamic cavitation plays an important role during the ozonation of phenol, i.e., it accelerates phenol removal by improving mass transfer and generating more hydroxyl radicals.…”

“…Cleavage of chloroform induced by the suction-cavitation has been demonstrated in our former study, and the observed decomposition rates of chloroform vary polynomially with the diameter of suction orifice [28]. In this investigation, the degradation of phenol was carried out in aqueous solutions with various diameters of the suction orifice.…”

“…Hydrodynamic cavitation and its chemical effect can be induced by both of positive and negative pressure difference [25][26][27][28]. The so-called suction-cavitation is hydrodynamic cavitation induced by negative pressure.…”

Removal of blue-green algae using the hybrid method of hydrodynamic cavitation and ozonation

“…In our previous study, suction also enhanced the chemical and physical effects of hydrodynamic cavitation where the decomposition of chloroform was significantly better with suction compared to extrusion with the same pump [47]. The increased effect of suction-cavitation on the ozonation of phenol has also been demonstrated and the utilization of ozone is significantly improved by suction-cavitation [41].…”

Plant and Biomass Extraction and Valorisation under Hydrodynamic Cavitation

“…In general, hole diameters are in the 1-6 mm range depending on hole number and tube diameters, while orifice plate inlet pressures (P 1 ) are less than 1 MPa. Negative downstream pressures (P 2 ) can also cause cavitation when a pump is installed downstream of the orifice plate [61][62][63][64]. The cavitation number (Cv) is usually employed to characterise the cavitation event [65]:…”