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Mathematical Kinetic Modelling and Representing Design Equation for a Packed Photoreactor with Immobilised TiO2-P25 Nanoparticles on Glass Beads in the Removal of C.I. Acid Orange 7

Sheidaei B., Behnajady M. A.

Chemical and Process Engineering

2015

Vol. 36, nr 2

125--133

In this work, a design equation was presented for a batch-recirculated photoreactor composed of a packed bed reactor (PBR) with immobilised TiO2-P25 nanoparticle thin films on glass beads, and a continuous-flow stirred tank (CFST). The photoreactor was studied in order to remove C.I. Acid Orange 7 (AO7), a monoazo anionic dye from textile industry, by means of UV/TiO2 process. The effect of different operational parameters such as the initial concentration of contaminant, the volume of solution in CFST, the volumetric flow rate of liquid, and the power of light source in the removal efficiency were examined. A rate equation for the removal of AO7 is obtained by mathematical kinetic modelling. The results of reaction kinetic analysis indicate the conformity of removal kinetics with Langmuir-Hinshelwood model (kL-H = 0.74 mg L-1 min-1, Kads = 0.081 mg-1 L). The represented design equation obtained from mathematical kinetic modelling can properly predict the removal rate constant of the contaminant under different operational conditions (R2 = 0.963). Thus the calculated and experimental results are in good agreement with each other.

Laboratoryjny reaktor do badania reakcji fotokatalitycznych w układzie ciekłe reagenty - stały katalizator

Słomkiewicz P. M., Szczepanik B.

Aparatura Badawcza i Dydaktyczna

2015

T. 20, nr 1

24-35

W pracy przedstawiono budowę i zasadę działania laboratoryjnego reaktora do badania reakcji fotokatalitycznych w układzie ciekłe reagenty - stały katalizator. Konstrukcja reaktora umożliwia pobieranie próbek z mieszaniny reakcyjnej oraz doprowadzanie do mieszaniny reakcyjnej gazów, w tym gazów obojętnych

The construction and the principle of operation of the laboratory reactor for testing photocatalyst reactions in the liquid reagents - the solid catalyst system have been described in the presented paper. Construction of reactor enables sampling of the reaction mixture and supplying to the reaction mixture of gases and inert gases too.

Band reactor for toxic and recalcitrant water contaminants

Czech B., Ćwikła-Bundyra W.

Polish Journal of Chemical Technology

2007

Vol. 9, nr 4

18-20

This paper deals with the problem of the photocatalytic reactor construction. The supported TiO2 on γ-Al2O3 modified with Mo or V addition was used as the photocatalyst, whereas phenol and formaldehyde were chosen as the model pollutants. The counter - current contact of reagents and catalysts is the main advantage of the construction and enables a significant COD reduction of the highly concentrated wastewaters.