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This work has been supported by following projects “Waste & Sun for photocatalytic degradation
of micropollutants in water” (OS-Mi), supported by European Regional Development Fund, KK.01.1.1.04.0006.
(photocatalysts preparation and photocatalytic studies) and “PV-WALL” PZS-2019-02-1555 in the Research
Cooperability Program of the Croatian Science Foundation funded by the European Union from the European
Social Fund under the Operational Programme Efficient Human Resources 2014–2020 (material characterization).
The work is focused on the assessment of possible methods for intensification of photocatalytic degradation of common water borne pollutants. Solar photocatalysis poses certain limitations for large scale application with several possible reactor designs which have shown an optimal performance. In the current study, a comparison between two types of pilot scale reactors was made: a flat-plate cascade reactor (FPCR) and tubular reactor with a compound parabolic collector (CPC). Apart from the reactor design, another aspect of possible intensification was a photocatalyst formulation. The efficiency of photocatalytic films that consisted of pure TiO2 nanoparticles was compared to the efficiency of films that consisted of TiO2/CNT composites. Intensification assessment was performed via detailed kinetic modelling, combining the optical properties of films, irradiation conditions and reactor mass balance. Intensification was expressed via intensification indices. Results showed the advantage of the CPC-based reactor design and an unbiased effect of sensitizing agent (CNT) in the photocatalytic film formulation.
