Performance and energetic analysis of hydrodynamic cavitation and potential integration with existing advanced oxidation processes: A case study for real life greywater treatment

Investigation into cavitational intensity and COD reduction performance of the pinned disc reactor with various rotor-stator arrangements

“…Several different cavitator designs have been successfully employed for advanced oxidation of dissolved organic compounds (a review provided in [1] , [6] , [7] ) and disinfection (a review provided in [2] , [8] ) of WW. These include orifice plates [9] , [10] , venturi tubes [10] , [11] , vortex cavitation [12] , and rotating devices [13] , [14] , [15] , [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] , [24] that will be hereinafter referred to as rotational generators of hydrodynamic cavitation (RGHC).…”

Paradigm Shift toward Developing a Zero Liquid Discharge Strategy for Dye-Contaminated Water Streams: A Green and Sustainable Approach Using Hydrodynamic Cavitation and Vacuum Membrane Distillation

“…From an engineering point of view, , the design and geometry of the cavitating device depend on (i) the effect of injection slot diameter on flow velocity and flow pressure, (ii) effect of the free area offered for the flow, and (iii) effect of thickness of orifice plate. There are several reports on the numerical simulations and validation of the same with experimental results. , In this work, the authors have initially optimized the geometry of the cavitating device by varying the flow rate and pressure intensifying the cavitation bubble generation.…”

“…The experimental setup for the cavitation process follows a recirculation type configuration consisting of a cavitating device connected by pressure gauges in either side, feed tank, centrifugal pump, and control valves. Details of the experimental setup for cavitation process are provided elsewhere . The VMD setup consists of a flat sheet membrane module, a feed pump and vacuum pump, feed tank connected with a heater, a condenser, permeate tank, and control valves.…”

Optimization of parameters applied to degradation and mineralization of p-nitrophenol using advanced oxidative processes

“…These technologies are unable to degrade or mineralize complex organic components (Mukherjee et al 2020) with high mobility and low biodegradability in high concentrations (Hu et al 2020). In addition, phenol removal processes, which involve sorption and biodegradation, are slow and, in some cases, inefficient (Ren et al 2017;Zhang et al 2017;Jiang et al 2018).…”

“…In addition, phenol removal processes, which involve sorption and biodegradation, are slow and, in some cases, inefficient (Ren et al 2017;Zhang et al 2017;Jiang et al 2018). Advanced oxidation processes (AOPs) are widely used and promising technologies, as they provide highly active oxidants to remove persistent organic pollutants (Mukherjee et al 2020), such as NFs in aqueous solution (Dewil et al 2017;Abazari et al 2019;Wang et al 2021b). Photocatalytic oxidation is seen as an effective, viable and low-cost treatment to remove pollutants from aqueous solutions (Xiong et al 2019).…”