Photocatalytic degradation of reactive red 198 by TiO2-activated carbon nanocomposite

Document Type : Research Paper

Authors

• A. Eshaghi
• S. Haeri pour

Abstract

Reactive dyes are used extensively in the textile industry. These dyes are highly water soluble and as a result, their removal from the textile effluent by conventional methods is very difficult. Therefore, many attentions have to be focused on techniques that can lead to the complete destruction of these pollutants. This had led to the study of other methods such as an advanced oxidation process based on photocatalysis. In this research, TiO₂–activated carbon nano-composites with different concentrations of the activated carbon (0, 5, 10, 15 weight %)  were prepared by a sol–gel method. The structure and morphology of the nanocomposites were evaluated by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) techniques. The photocatalytic activity of the nano-composites were evaluated through degradation of reactive red 198 under ultraviolet light irradiations. The results indicated that the TiO₂ nano-composite contained only anatase phase and average particle size was 35 nm. The photocatalytic results indicated that the photo-degradation of the reactive red 198 is increased by increasing the activated carbon content to 10 wt% and then decreased. TiO₂-5 wt% activated carbon showed the best photocatalytic properties. The photocatalytic results indicated that the reactive red 198 degraded around 42% and 35% during a 210 min irradiation period in the presence of TiO₂-5 wt% activated carbon nano-composite and TiO₂, respectively.

Keywords

• TiO2
• Nano-composite
• Photocatalytic
• Reactive red 198

20.1001.1.22285946.1395.7.26.3.9

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References

1- A. Matilainen, M. Sillanpaa, “Removal of natural organic matter from drinking water by advanced oxidation processes”, Chemosphere, Vol. 80, pp. 351–3654, 2010.

2- D. Georgiou, P. Melidis, A. Aivasidis, K. “Gimouhopoulos, Degradation of azo-reactive dyes by ultraviolet radiation in the presence of hydrogen peroxide”, Dye and Pigments, Vol. 52, pp. 69-75, 2002.

3- O. K Mahadwad, P. A. Parikh, R. V. Jasra, C. Patil, “Photocatalytic degradation of reactive black-5 dye using TiO₂ impregnated ZSM-5”, Bulletin of  Materials  Science, Vol. 34, pp. 551–556, 2011.         

4- E. M. Saggioro , A. S. Oliveira, T. Pavesi , C. G. Maia , L. F. Ferreira , J. C. Moreira , “Use of titanium dioxide photocatalysis on the remediation of model textile wastewaters containing azo dyes”, Molecules, Vol. 16, pp. 10370-10386, 2011.

5- ا .بذرافشان ، ف. کرد مصطفی پور ، ب .باریک بین، حذف رنگ راکتیو قرمز 198 از محلول های آبی با استفاده از خاکستر حاصل از زائدات پسته، مجله علمی دانشگاه علوم پزشکی بیرجند، 19 ، 1391،صفحه  276-266.

 

 

 

 6- ز. نوری مطلق،  ق. شمس خرمآبادی، ح. گودینی، ر. درویشی چشمه سلطانی ، بررسی کارایی فرآیند فتوکاتالیستی نانوذرات ZnO رنگبری متیلن بلو از فاضلاب سنتتیک،  فصلنامه علمی  پژوهشی دانشگاه علوم پزشکی لرستان ، دوره چهاردهم، شماره 5، 1391، صفحه 61-51.

 

7- K.Y. Foo, B.H. Hameed, “Decontamination of textile wastewater via TiO₂/activated carbon composite materials”, Advances in Colloid and Interface Science, 159, 130–143, 2010.   

8- W. C. Oh, J. S. Bae, “Preparation of Fe-ACF/TiO₂ Composites and their Photocatalytic Degradation of Waste Water”, Journal of the Korean Ceramic Society, 45, 667~674, 2008.    

9- H. Slimen, A. Houas, J. P. Nogier, “elaboration of stable anatase TiO₂ through activated carbon addition with high photocatalytic activity under visible light”, Journal of photochemistry and photobiology  A: Chemistry, Vol. 221, pp. 13-21, 2011.

10- A. S. Tunali, T. Akar, A. Cabuk, “Decolorization of a textile dye, Reactive Red 198 (RR198) by aspergillus parasiticus fungal biosorbent”, Brazilian Journal of Chemical Engineering, Vol. 26, pp. 399 – 405, 2009.       

11- A. Giwa, P. O. Nkeonye, K. A. Bello, E. G. Kolawole, A. Oliveira, “Solar photocatalytic degradation of Reactive Yellow 81 and Reactive Violet in aqueous solution containing semiconductor oxides”, International Journal of Applied Science and Technology,  Vol. 2, pp. 90-105, 2012.

12- R. Ravichandran, K. Selvan, M. Swaminathan, “Highly effiecient activated carbon loaded TiO₂ for photo defluoridation of pentafluorobenzoic acid”, Journal of Molecular Ctalysis A: Chemical, Vol. 317, pp. 89-96, 2010.

13- I. K. Konstantinou, T. A. Albanis, “TiO₂ assisted photocatalytic degradation of azo dyes in aqueous solution: kinetic and mechanistic investigations”, Applied Catalysis, Vol. 94, pp. 1-14, 2004. 

14- N. M. Mahmoodi, M. Arami, N. Yousefi Limaee, “Photocatalytic degradation triazinc ring-containig azo dye (Reactive Red 198) by using immobilized TiO₂ photoreactor bench scale study”, Journal of Hazardous Materials, Vol. 133, pp. 113-118, 2006.

      15- S. X. Liu, X. Y. Chen, X. Chen, “A TiO₂/AC composite photocatalyst with high activity and easy separation prepared by a hydrothermal method”, Journal of Hazardous Materials, Vol. 143, pp.257-263, 2007.