Study of Influence Factors in the Evaluation of the Performance of a Photocatalytic Fibre Reactor (TiO<sub>2</sub>/SiO<sub>2</sub>) for the Removal of Organic Pollutants from Water
The performance of a photocatalytic fibre reactor (UBE Chemical Europe), made of cartridges of fine particles of TiO<sub>2</sub> dispersed within silicon fibres and irradiated by ultraviolet light, for the removal of organic pollutants from synthetic waters was evaluated. In the sensitiv...
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MDPI AG
2022-01-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/2/122 |
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| author | Juan C. García-Prieto Luis A. González-Burciaga José B. Proal-Nájera Manuel García-Roig |
| author_facet | Juan C. García-Prieto Luis A. González-Burciaga José B. Proal-Nájera Manuel García-Roig |
| author_sort | Juan C. García-Prieto |
| collection | DOAJ |
| description | The performance of a photocatalytic fibre reactor (UBE Chemical Europe), made of cartridges of fine particles of TiO<sub>2</sub> dispersed within silicon fibres and irradiated by ultraviolet light, for the removal of organic pollutants from synthetic waters was evaluated. In the sensitivity analysis carried out, the factors catalytic surface area, fibre state, temperature and initial substrate concentration were studied using 4-chlorophenol as a test compound. The percentage of titanium in the fibre remained practically invariable after a series of experiments and cleaning procedures. Furthermore, the kinetics of removal of pyrene, phenol, 4-chlorophenol and bisphenol A (BPA) from water were evaluated by means of HPLC, UV-absorption and fluorescence techniques. Kinetic operational parameters were determined from a mathematical model proposed by Langmuir–Hinshelwood. Results show that catalytic surface, initial substrate concentration and temperature directly affect the degradation rate of organic compounds, whereas fibre state does not have a significant effect on that. It is proposed that removal of organic compounds from water mainly depends on the adsorption of the specific pollutant on the photocatalytic fibre and on the physical diffusion of the substrate towards the photocatalytic TiO<sub>2</sub> active sites on the fibre, with the heterogeneous phase reaction prevailing over the homogeneous phase reaction. |
| first_indexed | 2024-03-09T22:22:00Z |
| format | Article |
| id | doaj.art-417d0110bc534c4aa6ee0f3255efaa2f |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T22:22:00Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-417d0110bc534c4aa6ee0f3255efaa2f2023-11-23T19:11:37ZengMDPI AGCatalysts2073-43442022-01-0112212210.3390/catal12020122Study of Influence Factors in the Evaluation of the Performance of a Photocatalytic Fibre Reactor (TiO<sub>2</sub>/SiO<sub>2</sub>) for the Removal of Organic Pollutants from WaterJuan C. García-Prieto0Luis A. González-Burciaga1José B. Proal-Nájera2Manuel García-Roig3Centro de Investigación y Desarrollo Tecnológico del Agua, Universidad de Salamanca, Campo Charro s/n, 37080 Salamanca, SpainCIIDIR-Unidad Durango, Instituto Politécnico Nacional, Calle Sigma 119, Fracc. 20 de Noviembre II, Durango 34220, MexicoCIIDIR-Unidad Durango, Instituto Politécnico Nacional, Calle Sigma 119, Fracc. 20 de Noviembre II, Durango 34220, MexicoCentro de Investigación y Desarrollo Tecnológico del Agua, Universidad de Salamanca, Campo Charro s/n, 37080 Salamanca, SpainThe performance of a photocatalytic fibre reactor (UBE Chemical Europe), made of cartridges of fine particles of TiO<sub>2</sub> dispersed within silicon fibres and irradiated by ultraviolet light, for the removal of organic pollutants from synthetic waters was evaluated. In the sensitivity analysis carried out, the factors catalytic surface area, fibre state, temperature and initial substrate concentration were studied using 4-chlorophenol as a test compound. The percentage of titanium in the fibre remained practically invariable after a series of experiments and cleaning procedures. Furthermore, the kinetics of removal of pyrene, phenol, 4-chlorophenol and bisphenol A (BPA) from water were evaluated by means of HPLC, UV-absorption and fluorescence techniques. Kinetic operational parameters were determined from a mathematical model proposed by Langmuir–Hinshelwood. Results show that catalytic surface, initial substrate concentration and temperature directly affect the degradation rate of organic compounds, whereas fibre state does not have a significant effect on that. It is proposed that removal of organic compounds from water mainly depends on the adsorption of the specific pollutant on the photocatalytic fibre and on the physical diffusion of the substrate towards the photocatalytic TiO<sub>2</sub> active sites on the fibre, with the heterogeneous phase reaction prevailing over the homogeneous phase reaction.https://www.mdpi.com/2073-4344/12/2/122photocatalysisorganic compoundsphotocatalytic glass fibrephotodegradationadsorptionheterogeneous phase |
| spellingShingle | Juan C. García-Prieto Luis A. González-Burciaga José B. Proal-Nájera Manuel García-Roig Study of Influence Factors in the Evaluation of the Performance of a Photocatalytic Fibre Reactor (TiO<sub>2</sub>/SiO<sub>2</sub>) for the Removal of Organic Pollutants from Water Catalysts photocatalysis organic compounds photocatalytic glass fibre photodegradation adsorption heterogeneous phase |
| title | Study of Influence Factors in the Evaluation of the Performance of a Photocatalytic Fibre Reactor (TiO<sub>2</sub>/SiO<sub>2</sub>) for the Removal of Organic Pollutants from Water |
| title_full | Study of Influence Factors in the Evaluation of the Performance of a Photocatalytic Fibre Reactor (TiO<sub>2</sub>/SiO<sub>2</sub>) for the Removal of Organic Pollutants from Water |
| title_fullStr | Study of Influence Factors in the Evaluation of the Performance of a Photocatalytic Fibre Reactor (TiO<sub>2</sub>/SiO<sub>2</sub>) for the Removal of Organic Pollutants from Water |
| title_full_unstemmed | Study of Influence Factors in the Evaluation of the Performance of a Photocatalytic Fibre Reactor (TiO<sub>2</sub>/SiO<sub>2</sub>) for the Removal of Organic Pollutants from Water |
| title_short | Study of Influence Factors in the Evaluation of the Performance of a Photocatalytic Fibre Reactor (TiO<sub>2</sub>/SiO<sub>2</sub>) for the Removal of Organic Pollutants from Water |
| title_sort | study of influence factors in the evaluation of the performance of a photocatalytic fibre reactor tio sub 2 sub sio sub 2 sub for the removal of organic pollutants from water |
| topic | photocatalysis organic compounds photocatalytic glass fibre photodegradation adsorption heterogeneous phase |
| url | https://www.mdpi.com/2073-4344/12/2/122 |
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