Study of Influence Factors in the Evaluation of the Performance of a Photocatalytic Fibre Reactor (TiO2/SiO2) 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 TiO2 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 ou...

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Bibliographic Details
Published in:Catalysts 2022-02, Vol.12 (2), p.122
Main Authors: García-Prieto, Juan C., González-Burciaga, Luis A., Proal-Nájera, José B., García-Roig, Manuel
Format: Article
Language:English
Subjects:
Adsorption
Bisphenol A
Catalysts
Chemical reactions
Chlorophenol
Fixed bed reactors
Fluorescence
heterogeneous phase
Kinetics
Light
Organic compounds
Performance evaluation
Phenols
Photocatalysis
photocatalytic glass fibre
photodegradation
Pollutants
Semiconductors
Sensitivity analysis
Silicon dioxide
Substrates
Titanium compounds
Titanium dioxide
Ultraviolet radiation
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Summary:The performance of a photocatalytic fibre reactor (UBE Chemical Europe), made of cartridges of fine particles of TiO2 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 TiO2 active sites on the fibre, with the heterogeneous phase reaction prevailing over the homogeneous phase reaction.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal12020122