Degradation of Dyes by Hydrodynamic Cavitation and Other Advanced Oxidation Processes: A Review | ||||
| The Egyptian International Journal of Engineering Sciences and Technology | ||||
| Articles in Press, Accepted Manuscript, Available Online from 04 June 2025 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eijest.2025.379856.1333 | ||||
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| Authors | ||||
Ghada Heikal 1; Ahmed Abdo2; Mohamed Hani Mohamed Fathi  2
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| 1Environmental Engineering Department, Faculty of Engineering, Zagazig University, Zagazig, Egypt | ||||
| 2Environmental Engineering Department, Faculty of Engineering, Zagazig University ,Zagazig, Egypt | ||||
| Abstract | ||||
| Degradation of dyes which exist in wastewater could be achieved by many ways such as biological oxidation, membrane separation, adsorption, coagulation processes, and irradiation but there are many drawbacks in these methods therefore, many reports began to study more effective ways to overcome these drawbacks such as hydrodynamic cavitation (HC). This review paper focuses on using hydrodynamic cavitation (HC) that is obtained by velocity and pressure variance in the system in dye degradation and offers an overview of previous research which deal with dye removal by HC alone or coupled with advanced oxidation processes (AOPs). The influence of operational parameters such as initial dye concentration, PH, inlet pressure and geometrical parameters including the shape and dimensions on dye degradation efficacy has been investigated. Also, optimal values of these parameters have been illustrated. Different hybrid techniques including HC/photocatalysis, HC/Fenton’s reagent, HC/persulfate, HC/Hydrogen Peroxide, HC/Nanoparticles, and HC/Ozone were also studied and comparative studies between them were implemented. Overall HC offers hopeful treatment because of the easiness of operation, less material and chemical expenses and potential of continuous large-scale operation. | ||||
| Keywords | ||||
| Hydrodynamic cavitation; Dye degradation; Geometrical and operational parameters; HC combined with AOPs; Cost estimation | ||||
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