Optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry-type reactor
This study examined the photocatalytic degradation of wastewater containing methyl violet dye in a recirculating slurry-type reactor using commercial TiO2 as the photocatalyst under ultraviolet irradiation. The effects of initial dye concentration (10 – 80 ppm), photocatalyst dosage (0.2 – 1 g/L), s...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Results in Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715624006763 |
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| author | F. Shokry M. El-Gedawy S.A. Nosier M.H. Abdel-Aziz |
| author_facet | F. Shokry M. El-Gedawy S.A. Nosier M.H. Abdel-Aziz |
| author_sort | F. Shokry |
| collection | DOAJ |
| description | This study examined the photocatalytic degradation of wastewater containing methyl violet dye in a recirculating slurry-type reactor using commercial TiO2 as the photocatalyst under ultraviolet irradiation. The effects of initial dye concentration (10 – 80 ppm), photocatalyst dosage (0.2 – 1 g/L), solution pH (2 – 11), and flow rate (2 – 4 L/min) on degradation efficiency were thoroughly assessed. Results showed that degradation efficiency increased with pH, peaking at neutral pH (7), before declining at higher values. Similarly, catalyst loading up to 1 g/L enhanced efficiency, but further increases caused a decline. Higher solution flow rates improved mass transfer by increasing turbulence, leading to enhanced degradation efficiency. Optimal conditions (neutral pH, 1 g/L catalyst loading, and 4 L/min flow rate) achieved complete decolorization of a 10-ppm dye solution. These findings highlight the feasibility of achieving high degradation efficiencies under practical conditions, supporting the potential for industrial-scale application in effluent treatment. |
| format | Article |
| id | doaj-art-26f00903fa734d12890d2cf9647087f2 |
| institution | Kabale University |
| issn | 2211-7156 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj-art-26f00903fa734d12890d2cf9647087f22025-01-29T05:00:47ZengElsevierResults in Chemistry2211-71562025-01-0113101980Optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry-type reactorF. Shokry0M. El-Gedawy1S.A. Nosier2M.H. Abdel-Aziz3Chemical Engineering Department, Faculty of Engineering Port Said University, Port Said 42526, EgyptChemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, EgyptChemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, EgyptChemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt; Chemical and Materials Engineering Department, King Abdulaziz University, Rabigh 21911, Saudi Arabia; Corresponding author at: Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt.This study examined the photocatalytic degradation of wastewater containing methyl violet dye in a recirculating slurry-type reactor using commercial TiO2 as the photocatalyst under ultraviolet irradiation. The effects of initial dye concentration (10 – 80 ppm), photocatalyst dosage (0.2 – 1 g/L), solution pH (2 – 11), and flow rate (2 – 4 L/min) on degradation efficiency were thoroughly assessed. Results showed that degradation efficiency increased with pH, peaking at neutral pH (7), before declining at higher values. Similarly, catalyst loading up to 1 g/L enhanced efficiency, but further increases caused a decline. Higher solution flow rates improved mass transfer by increasing turbulence, leading to enhanced degradation efficiency. Optimal conditions (neutral pH, 1 g/L catalyst loading, and 4 L/min flow rate) achieved complete decolorization of a 10-ppm dye solution. These findings highlight the feasibility of achieving high degradation efficiencies under practical conditions, supporting the potential for industrial-scale application in effluent treatment.http://www.sciencedirect.com/science/article/pii/S2211715624006763Photocatalytic degradationMethyl violet dyeSlurry-type reactorRecirculationTiO2 photocatalystWastewater treatment |
| spellingShingle | F. Shokry M. El-Gedawy S.A. Nosier M.H. Abdel-Aziz Optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry-type reactor Results in Chemistry Photocatalytic degradation Methyl violet dye Slurry-type reactor Recirculation TiO2 photocatalyst Wastewater treatment |
| title | Optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry-type reactor |
| title_full | Optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry-type reactor |
| title_fullStr | Optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry-type reactor |
| title_full_unstemmed | Optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry-type reactor |
| title_short | Optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry-type reactor |
| title_sort | optimizing photocatalytic degradation of methyl violet dye in a recirculating slurry type reactor |
| topic | Photocatalytic degradation Methyl violet dye Slurry-type reactor Recirculation TiO2 photocatalyst Wastewater treatment |
| url | http://www.sciencedirect.com/science/article/pii/S2211715624006763 |
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