ocess Engineering, University of Constantine 3, 25000 Constantine, Algeria
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Publications Show all
Sonolytic ozonation for water treatment: efficiency, recent developments, and challenges
Published in Current Opinion in Green and Sustainable Chemistry
In recent years, ozonation combined with ultrasound (US/O3 process) has been actively researched as a promising method of advanced oxidation processes. Comparing with ozonation or ultrasound alone, it appears to be more effective and uses less energy, and it has the advantages of being nonselective, leading to no secondary pollution, and being part...
Liquid depth effect on the acoustic generation of hydroxyl radical for large scale sonochemical reactors
Published in Separation and Purification Technology
Liquid depth (z) is one of the most critical factors that influence the sonochemical activity, particularly for large-scale sonoreactors. This factor is one of the missing links between lab-scale sonoreactors and industrial-scale sonoreactors. Herein, computer simulations of depth effect (z = 0–8 m) on the acoustic generation of free radicals were ...
Degradation of C.I. Acid Blue 25 in water using UV/K2S2O8 process: effect of salts and environmental matrix
Published in Desalination and Water Treatment
The objective of this work was to evaluate the degradation of an anthraquinone dye, C.I. Acid Blue 25 (AB25), in aqueous phase using UV/K2 S2 O8 (PPS) process. Experiments were conducted in batch mode using a low-pressure mercury lamp emitting mainly at 253.7 nm. The effect of operational conditions such as initial PPS and AB25 concentrations and...
Degradation of Safranin O by thermally activated persulfate in the presence of mineral and organic additives: impact of ...
Published in Desalination and Water Treatment
This work explores the degradation of Safranin O (SO), an organic dye pollutant, in water by thermally activated persulfate (PS). The effect of operating parameters, i.e., PS and SO initial concentrations (100-2,000 mg L⁻¹ for PS and 3-100 mg L⁻¹ for SO), temperature (20°C-70°C) and initial solution pH (3-13) on the degradation rate of the dye was ...
Persulfate-enhanced sonochemical degradation of naphthol blue black in water: Evidence of sulfate radical formation
Published in Ultrasonics Sonochemistry
This work explores the effect of persulfate (PS) on the sonochemical degradation of organic pollutants taking naphthol blue black (NBB), an anionic diazo dye, as a substrate model. The sonolytic experiments were conducted in the absence and presence of PS under various experimental conditions including acoustic power (10−80 W), frequency (20 and 58...
Computational engineering study of hydrogen production via ultrasonic cavitation in water
Published in International Journal of Hydrogen Energy
Ultrasonic cavitation, the formation and subsequent collapse of microbubbles, is the unique phenomenon responsible of the production of hydrogen during water sonolysis. This work presents the results of a comprehensive computational study of hydrogen production via acoustic cavitation in water. Computer simulations of chemical reactions occurring i...
