Degradation of C. I. Basic Blue 41 using modified TiO2 nanocomposite in a Rectangular Semibatch Photoreactor

Journal: Vol.8, No.1, 2015 - Article 5   Pages :   Until 

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Sarvin Mohammadi-aghdam: Payame Noor University - Department of Chemistry
Mohammad Ebrahim Olya: Institute for Color Science and Technology - Department of Environmental Research

Article's abstract:

The aim of this work was to investigate effect of operational parameters on the photocatalytic degradation efficiency of a solution containing C. I. Basic Blue 41 BB41 in a recirculated rectangular photoreactor irradiated with a UV light. TiO_2 nano composite film was prepared via sol-gel dip coating method. The films were characterized by X-ray diffraction XRD, transmission electron microscopy TEM, scanning electron microscopy SEM and atomic force microscopy AFM. Initial concentration of BB41 10-50 〖mg L〗^-1, flow rate 6-15 〖L.h〗^-1 and temperature 20-40℃ were the variables that mostly influenced the degradation efficiency. The results showed that the removal efficiency decreases as the initial concentration and flow rate increases, but it increases when the temperature increased. The mineralization of BB41 was followed by UV-vis analyses changes and chemical oxygen demand COD decrease. The results indicated 92.943 mineralization of 25 〖mg L〗^-1 dye at after.2h of UV irradiation.

Advanced oxidation processes (AOPs), TiO_2nano composite film, chemical oxygen demand (COD)

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