Synergistic effects of hybrid advanced oxidation processes (AOPs) based on hydrodynamic cavitation phenomenon – A review

Degradation of Tartrazine Using Hydrodynamic Cavitation‐Based Hybrid Techniques and Fenton Chemistry

“…These disadvantages adversely affect the aquatic life and supply of fresh water, causing major health hazards. Therefore, attempts are being consistently made around the world to propose new Fenton catalysts to produce hydroxyl radicals from H 2 O 2 and which are techno-economically feasible [43,44].…”

“…Innocenzi et al [34] have studied HC in conjugation with the Fenton process for the degradation of Methyl Orange and reported an SC of 3.13. Recently, Fedorov et al [44] have presented a state-of-the-art review on the synergistic effects of hybrid AOPs based on the HC phenomenon. They concluded that HC-based hybrid techniques show excellent oxidation capacity due to the increased generation of reactive radicals under optimized operating parameters of HC and oxidant/catalyst loadings.…”

Combined ultrasound cavitation and persulfate for the treatment of pharmaceutical wastewater

“…Among them, activation by ultrasound acts as an emerging method and is typically used for pharmaceutical wastewater treatment (Zou et al 2014;Yang et al 2019). The synergistic effect of combined cavitation and persulphate process has been studied by (Fedorov et al 2022) and has computed the synergistic index for different combined process. The synergistic index of combined cavitation and persulphate varied from 1.52 to 4.43 for different pollutants (Fedorov et al 2022).…”

“…The synergistic effect of combined cavitation and persulphate process has been studied by (Fedorov et al 2022) and has computed the synergistic index for different combined process. The synergistic index of combined cavitation and persulphate varied from 1.52 to 4.43 for different pollutants (Fedorov et al 2022). Therefore, it is significant to use combined process for the treatment of pharmaceutical wastewater for having an increased removal.…”

Water decontamination under high salinity using the TiO2 NT/PbO2–Cu electrochemical oxidation system: kinetics mechanism and DFT studies

“…The appropriate treatment of high salinity wastewater such as reverse osmosis concentrate (ROC), landfill leachate, as well as tannery, dyeing, and textile industry effluents are urgently needed nowadays because of stringent regulations prescribed for worldwide waters. Manifold methods such as membrane 1 and hybrid advanced oxidation process (AOP) 2 are, therefore, introduced to decontaminate high salinity wastewater, among which biological treatments using active sludge still take dominance due to their comparatively less capital cost and facile operation. 3 However, characterized by a high content of total dissolved substances (TDS), usually more than 3.5%, noxious organic pollutants that emerged in high salinity wastewater are generally difficult to be degraded in the dissolved salts, including NaCl, Na 2 SO 4 , and NaNO 3 , owing to the inhibition of the metabolic activity of microbes.…”