STUDY OF THE PHOTOCATALYTIC DEGRADATION OF A CATIONIC DYE IN AQUEOUS SOLUTION BY DIFFERENT TYPES OF CATALYSTS

Laid N; Bouanimba N; Zouaghi R; Sehili T

Article Details

STUDY OF THE PHOTOCATALYTIC DEGRADATION OF A CATIONIC DYE IN AQUEOUS SOLUTION BY DIFFERENT TYPES OF CATALYSTS

Authors:

Laid N | Bouanimba N | Zouaghi R | Sehili T

Publisher:

Université Mentouri de Constantine

Journal:

Sciences & technologie. A, sciences exactes Issue 39, pp.75-82

Document Type:

Article

Publication Date:

6/2014

Document Language:

English

Document ID (Org No.):

2001909516

pISSN:

2602-7739

Keywords:

Abstract:

 The photocatalytic degradation of an aqueous solution of Malachite Green Oxalate (MG) has been investigated
using TiO2-P25, TiO2-PC100 and ZnO as catalysts in slurry form in presence of UV lamp at λmax= 365 nm. The
adsorption of MG on TiO2-P25 and ZnO catalysts was found favorable by the Langmuir approach, while
Freundlich equation represents better the adsorption of MG on the TiO2-PC100 surface. The disappearance of
MG by photocatalysis in presence of the three catalysts followed pseudo first-order kinetics and LangmuirHinshelwood model is well suited to describe the kinetics of photocatalytic disappearance of these dye The
effect of the initial dye concentration, type of catalysts, addition of alcohol such as tert-butyl and solution pH on
the degradation of MG in presence of TiO2-P25, TiO2-PC100 or ZnO catalysts were discussed. The ZnO catalyst
is more effective than TiO2-P25 and TiO2-PC100 at different operating conditions studied. COD analysis showed
a complete mineralization of the dye in a relatively short time of about 2 h for ZnO, and a reduction of 42 % and
10 % in COD for TiO2-P25 and TiO2-PC100, respectively, after 2 h of irradiation.

Article Details

STUDY OF THE PHOTOCATALYTIC DEGRADATION OF A CATIONIC DYE IN AQUEOUS SOLUTION BY DIFFERENT TYPES OF CATALYSTS

Authors:

Laid N | Bouanimba N | Zouaghi R | Sehili T

Publisher:

Université Mentouri de Constantine

Journal:

Sciences & technologie. A, sciences exactes Issue 39, pp.75-82

Document Type:

Article

Publication Date:

6/2014

Document Language:

English

Document ID (Org No.):

2001909516

pISSN:

2602-7739

Dye

Adsorption

Photocatalysis

Decolorization

TiO2

ZnO

Issues

Article Details

STUDY OF THE PHOTOCATALYTIC DEGRADATION OF A CATIONIC DYE IN AQUEOUS SOLUTION BY DIFFERENT TYPES OF CATALYSTS

Authors: Laid N | Bouanimba N | Zouaghi R | Sehili T

Publisher: Université Mentouri de Constantine

Journal: Sciences & technologie. A, sciences exactes Issue 39, pp.75-82

Document Type: Article

Publication Date: 6/2014

Document Language: English

Document ID (Org No.): 2001909516

pISSN: 2602-7739

Dye

Adsorption

Photocatalysis

Decolorization

TiO2

ZnO

Issues

Authors:

Laid N | Bouanimba N | Zouaghi R | Sehili T

Publisher:

Université Mentouri de Constantine

Journal:

Sciences & technologie. A, sciences exactes Issue 39, pp.75-82

Document Type:

Article

Publication Date:

6/2014

Document Language:

English

Document ID (Org No.):

2001909516

pISSN:

2602-7739