Simultaneous synthesis-immobilization of nano ZnO on perlite for photocatalytic degradation of an azo dye in semi batch packed bed photoreactor

• Authors: Ali Khani , Mahmoud Reza Sohrabi
• Languages of publication: EN

Abstracts

EN

A novel, simple and simultaneous synthesis-immobilization of nano ZnO on perlite (nZnO-P) as a photocatalyst for photocatalytic degradation of Acid orange 7 (AO7) in aqueous solution was investigated. The effect of operational parameters such as initial dye concentration, initial pH, flow rate, photocatalyst granule size, temperature and the kinetic of the removal of AO7 in terms of the Langmuir-Hinshelwood model in a designed semi batch packed bed photoreactor connected to an on-line sampling UV-Vis spectrophotometer was studied. The results showed that AO7 removal efficiency increased with nZnO-P using the designed setup and the proposed photocatalyst was more efficient than TiO2 as a standard catalyst. Our results confirmed the pseudo-first-order kinetics model. The values of the adsorption equilibrium constant, KAO7, the kinetic rate constant of surface reaction, kc, and the activation energy (Ea) were found to be 0.57 (mg.l−1)−1, 0.41 mg.l−1.min−1 and 11.44 kJ/mol, respectively.

Keywords

EN

Natural gas vehicle; Driving Range; Compressed Natural Gas (CNG); Thermodynamic properties; CNG fuelling station.

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2012
• Volume: 14
• Issue: 4
• Pages: 69-76

Dates

published

1 - 12 - 2012

online

12 - 01 - 2013

Contributors

author

Ali Khani

• Islamic Azad University, Faculty of Chemistry, North Tehran Branch, P.O. Box 66 1913674711, Tehran, Iran

author

Mahmoud Reza Sohrabi

• Islamic Azad University, Faculty of Chemistry, North Tehran Branch, P.O. Box 66 1913674711, Tehran, Iran

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Identifiers

DOI

10.2478/v10026-012-0105-2