Kinetic-invariant analysis of dye degradation in an annular slurry bubble-column photo reactor
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Guncha Munjal
Abstract
Heterogeneous photocatalysis refers to the series of oxidation and reduction reactions on a semiconductor surface by the electrons and holes generated by absorption of light by the catalyst. This method is widely used for the degradation of dyes and their mixtures present in the textile effluent, and involves two main aspects, viz. a photocatalyst, and a photoreactor. TiO2 nanoparticles are well explored and among the best known photocatalysts used worldwide. Annular slurry bubble-column reactor is a commonly used photoreactor for dye(s) degradation. This research paper explores the effects of different parameters like air-flow rate, photocatalyst loading, and initial dye concentration on the dye degradation in an annular slurry bubble-column photoreactor. The results showed that the best dye degradation efficiencies were reported at an aeration rate of 1.7 × 10−4 m3/s and at a catalyst loading of 1.5 kg/m3. Higher the initial concentration of dye, the greater is the time taken for complete degradation and mineralization. A kinetic-invariant method, which is based on the dimensionless representation of existing data to predict the new experimental results, is used to develop a semi-empirical reactor performance equation. It can be used to predict the concentration of dye undergoing degradation in the photocatalytic reactor at any time without a need for further experimentation.
Funding source: IIT-Delhi
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Author contributions: Guncha Munjal- Conceptualization, Experimentation, Methodology, Formal analysis, Validation, Writing – Original Draft, Ashok N Bhaskarwar – Guidance and Supervision, Amita Chaudhary – Review & Editing, Visualization.
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Research funding: IIT-Delhi provided an Institute Fellowship to Ms. Guncha Munjal during 2010–2015.
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Conflict of interest statement: Not applicable.
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Ethics approval: Not applicable.
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Consent to participate: All participators have given consent.
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Consent for publication: All participators have given consent.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Editorial
- 10.1515/ijcre-2021-0153
- Special Issue Articles
- Kinetics studies on free radical scavenging property of ceria in polysulfone–ceria radiation resistant mixed-matrix membrane
- Dynamics of dust particles in a conducting water-based kerosene nanomaterials: a computational approach
- Calculations of activation energy and frequency factors for corn leafs pyrolysis using excel solver: new concept
- Removal of organic matter from wastewater coming from fruit juice production using solar photo-Fenton process
- Effects of aspect ratio and mushy-zone parameter on melting performance of a thermal energy storage unit filled with phase change material
- Simulation studies of n-heptane/toluene separation by extractive distillation using sulfolane, phenol, and NMP
- Kinetic-invariant analysis of dye degradation in an annular slurry bubble-column photo reactor
- Process intensification for enzyme assisted turmeric starch hydrolysis in hydrotropic and supercritical conditions
- Investigation on crystallization phenomena with supercritical carbon dioxide (CO2) as the antisolvent
Artikel in diesem Heft
- Frontmatter
- Editorial
- 10.1515/ijcre-2021-0153
- Special Issue Articles
- Kinetics studies on free radical scavenging property of ceria in polysulfone–ceria radiation resistant mixed-matrix membrane
- Dynamics of dust particles in a conducting water-based kerosene nanomaterials: a computational approach
- Calculations of activation energy and frequency factors for corn leafs pyrolysis using excel solver: new concept
- Removal of organic matter from wastewater coming from fruit juice production using solar photo-Fenton process
- Effects of aspect ratio and mushy-zone parameter on melting performance of a thermal energy storage unit filled with phase change material
- Simulation studies of n-heptane/toluene separation by extractive distillation using sulfolane, phenol, and NMP
- Kinetic-invariant analysis of dye degradation in an annular slurry bubble-column photo reactor
- Process intensification for enzyme assisted turmeric starch hydrolysis in hydrotropic and supercritical conditions
- Investigation on crystallization phenomena with supercritical carbon dioxide (CO2) as the antisolvent
