Photodegradation of C.I. Acid Yellow 23 Using Immobilized ZnO under Sunlight Irradiation

L. Aoudjit, F. Madjene, H. Lebik, B. Boutra, A. Sebti, S. Igoud


Abstract: The present study explored the possibility of using immobilized ZnO to photodegradation C.I. Acid Yellow 23 (tartrazine) Through this immobilization method, the separation process of fine zinc oxide (ZnO) photocatalyst at the end of the treatment can be avoided.The photocatalytic degradation of both dyes was investigated under sunlight irradiation.The results showed that the percentage of dye removal increased with decreasing initial dye concentration and increasing irradiation time. For the dye solution studied, higher removal efficiency was obtained under acidic solution medium.The findings have shown the potential of this application in dye removal from aqueous solution.

Full Text:



Fernández, C.; Larrechi, M. S.; Callao, M. P. Study of the influential factors in the simultaneous photocatalytic degradation process of three textile dyes. Talanta 2009, 79, 1292.

Honglei, Z.; Xiangcun, L.; Gaohong, H.; Jingjing, Z.; Dan, L. Preparation of Magnetic Composite Hollow Microsphere and Its Adsorption Capacity for Basic Dyes. Ind. Eng. Chem. Res. 2013, 52, 16902.

Daneshvar, N.; Salari, D.; Niaei, A.; Rasoulifard, M. H.; Khataee, A. R. Immobilization of TiO2 nanopowder on glass beads for the photocatalytic decolorization of an azo dye C.I. Direct Red 23. J. Environ. Sci. Health. A 2005, 40, 1.

Prieto, O.; Fermoso, J.; Nunez, Y.; del Valle, J. L.; Irusta, R. Decolouration of textile dyes in wastewaters by photocatalysis with TiO2. Sol. Energy 2005, 79, 376.

Alinsafi, A.; Evenou, F.; Abdulkarim, E. M.; Pons, M. N.; Zahraa, O.; Benhammou, A.; Yaacoubi, A.;Nejmeddine, A. Treatment of textile industry wastewater by supported photocatalysis. Dyes Pigments 2007, 74, 439.

Bergamini, R. B. M.; Azevedo, E. B.; Raddi de Araújo, L. R. eterogeneous photocatalytic degradation of reactive dyes in aqueous TiO2 suspensions: Decolorization kinetics. Chem. Eng. J. 2009, 149, 215.

S. Chakrabarti, B.K. Dutta, J. Hazard. Mater. 112 (2004) 269–278.

8.G. Plantard, T. Janin, V. Goetz, S. Brosillon, Solar photocatalysis treatment of phytosanitary refuses: Efficiency of industrial photocatalysts, Appl. Catal. B: Environ. 115–116 (2012) 38–44.

M.S.T. Goncalves, E.M.S. Pinto, P. Nkeonye, A.M.F. Oliveira-Campos, Dyes Pigments 64 (2005) 135–139.

H. Zhao, S. Xu, J. Zhong, X. Bao, Catal. Today 93–95 (2004) 857–861.

C.H. Wu, Chemosphere 57 (2004) 601–608.

N. Daneshvar, M. Rabbani, N. Modirshahla, M.A. Behnajady, J. Photochem. Photobiol. A 168 (2004) 39–45.


  • There are currently no refbacks.