GEP  Vol.5 No.9 , September 2017
UV-A Activated ZnO Mediated Photocatalytic Decolorization of Nigrosine (Acid Black 2) Dye in Aqueous Solution
Abstract: The present study deals with studied the essential requirements for photo-decoulorization of nigrosine dye with suspension solution of photocatalyst (ZnO), under 250 Watt UV-A light (Io = 1.47 10-7 ensien s-1). A kinetics study of photo-decolourization for this dye was obeyed to pseudo-first order. The best initial pH of decolorization at 25 mg/L of dye solution with 300 mg of ZnO was given a fast reaction at 8.17. The calculated activation energy for this photoreaction was found to be 31.549 kJ·mol-1. Thermodynamically, the reaction is exothermic and spontaneously. The efficiency of decolorizatio E% was 97.077 at 15 min that decreased with addition oxidant reagents such as H2O2, Fe2+ and mixture from them.
Cite this paper: Jaafar, M. (2017) UV-A Activated ZnO Mediated Photocatalytic Decolorization of Nigrosine (Acid Black 2) Dye in Aqueous Solution. Journal of Geoscience and Environment Protection, 5, 138-147. doi: 10.4236/gep.2017.59010.

[1]   Babič, J. and Pavko, A. (2007) Production of Ligninolytic Enzymes by Ceriporiopsis Subvertmispora for Decolourization of Synthetic Dyes. Acta Chimica Slovenica, 54, 730-734.

[2]   Blanquez, P., Casas, N., Font, X., Gabarrell, X., Sarra, M., Caminal, G. and Vicent (2004) Mechanism of Textile Metal Dye Biotransformation by Trametes versicolor. Water Research, 38, 2166-2172.

[3]   Borchert, M. and Libra, J.A. (2001) Decolorization of Reactive Dyes by the White Rot Fungus Trametes versicolor in Sequencing Batch Reactors. Biotechnology and Bioengineering, 3, 312-321.

[4]   Kakhia, T.I. (2015) Dyes, Colors & Pigments.

[5]   Green, F.J. (1990) The Sigma-Aldrich Handbook of Dyes, Stains and Indicators. Aldrich, Milwaukee, 513-515.

[6]   Clark, G. (1981) Staining Procedures Used by the Biological Stain Commission. 4th Edition, Williams & Wilkins, Baltimore, London, 412.

[7]   Linsebigler, A.L., Lu, G.Q. and Yates, J.T. (1995) Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected Results. Chemical Reviews, 95, 735-758.

[8]   Duxbury, D.F. (1993) The Photochemistry and Photophysics of Triphenylmethane Dyes in Solid and Liquid Media. Chemical Reviews, 93, 381-433.

[9]   Hoffman, M.R., Martin, S.T., Choi, W. and Bahnemann, W. (1995) Environmental Applications of Semiconductor Photocatalysis. Chemical Reviews, 95, 69-96.

[10]   Kandavelu, V., Kastien, H. and Thampi, K.R. (2004) Photocatalytic Degradation of Isothiazolin-3-Ones in Water and Emulsion Paints Containing Nanocrystalline TiO2 and ZnO Catalysts. Applied Catalysis B: Environmental, 48, 101-111.

[11]   Ahmed, S. (2004) Photo Electrochemical Study of Ferrioxalate Actinometry at a Glassy Carbon Electrode. Journal of Photochemistry and Photobiology A: Chemistry, 161, 151-154.

[12]   Mashkour, M.S., Al-Kaim, A.M., Ahmed, L.M. and Hussein, F.H. (2011) Zinc Oxide Assisted Photocatalytic Decolorization of Reactive Red 2 Dye. International Journal of Chemical Sciences, 9, 969-979.

[13]   Eesa, M.T., Juda, A.M. and Ahmed, L.M. (2016) Kinetic and Thermodynamic Study of the Photocatalytic Decolourization of Light Green SF Yellowish (Acid Green 5) Dye using Commercial Bulk Titania and Commercial Nanotitania. International Journal of Science and Research, 5, 1495-1500.

[14]   Giwa, A., Nkeonye, P.O., Bello, K.A., Kolawole, E.G. and Oliveira Campos, A.M.F. (2012) Solar Photocatalytic Degradation of Reactive Yellow 81 and Reactive Violet 1 in Aqueous Solution Containing Semiconductor Oxides. International Journal of Applied Science and Technology, 2, 90-105.

[15]   Fatha, E.S. and Ahmed, L.M. (2015) Optimization of Photocatalytic Decolorization of Methyl Green Dye Using Commercial Zinc Oxide as Catalyst. Kerb Journal, 13, 53-63.

[16]   Hassena, H. (2016) Photocatalytic Degradation of Methylene Blue by Using Al2O3/Fe2O3 Nano Composite under Visible Light. Modern Chemistry & Applications, 4, 1-5.

[17]   Khodja, A., Sehili, A.T., Pilichowski, J. and Bolue, P. (2001) Photocatalytic Degradation of 2-Penylphenol on TiO2 and ZnO in Aqueous Suspensions. Journal of Photochemistry and Photobiology A: Chemistry, 141, 231-239.

[18]   Byrappa, K., Subramani, A., Ananda, S., Rai, K., Dinesh, R. and Yoshimura, M. (2006) Photocatalytic Degradation of Rhodamine B Dye Using Hydrothermally Synthesized ZnO. Bulletin of Materials Science, 29, 433-438.

[19]   Ahmed, L.M., Tawfeeq, F.T., Abed Al-Ameer, M.H., Abed Al-Hussein, K. and Athaab, A.R. (2016) Photo-Degradation of Reactive Yellow 14 Dye (A Textile Dye) Employing ZnO as Photocatalyst. Journal of Geoscience and Environment Protection, 4, 34-44.

[20]   Nadjia, L., Abdelkader, E. and Ahmed, B. (2011) Photodegradation Study of Congo Red in Aqueous Solution using ZnO/UV-A: Effect of pH and Band Gap of Other Semiconductor Groups. Journal of Chemical Engineering and Process Technology, 2, 1-9.

[21]   Qadri, M., Nisar, S. and Fatima, N. (2015) Photokinetics of the Oxidation of Coomassie Brilliant Blue by Potassium Dichromate in Acidic Medium. International Journal of Advanced Research, 3, 888-898.

[22]   Olajire, A.A. and Olajide, A.J. (2014) Kinetic Study of Decolorization of Methylene Blue with Sodium Sulphite in Aqueous Media: Influence of Transition Metal Ions. Physical Chemistry & Biophysics, 4, 1-7.

[23]   Ahmed, L.M., Mahdi, Q.M., Mahmoud, F.S., Mahammed, M.J. and Ahmed, N.S. (2017) Kinetic Study for the Decolorization of Dispersive Blue 26 Dye from Suspension Solution of Commercial ZnO. The 5th Scientific Conference of the College of Science University of Kerbala, 127-136.

[24]   Tabbara, M.A. and Jamal, M.M. (2012) A Kinetic Study of the Discoloration of Methylene Blue by Na2SO3, Comparison with NaOH. Journal of the University of Chemical Technology and Metallurgy, 47, 275-282.

[25]   Goharshadi, E.K., Hadadian, M., Karimi, M. and Azizi-Toupkanloo, H. (2013) Photocatalytic Degradation of Reactive Black 5 azo Dye by Zinc Sulfide Quantum Dots Prepared by a Sonoch-Emical Method. Materials Science in Semiconductor Processing, 16, 1109-1116.

[26]   Hussein, F.H. (2012) Photochemical Treatments of Textile Industries Wastewater. Asian Journal of Chemistry, 24, 5427-5434.

[27]   Yatmaz, H.C., Akyol, A. and Bayramoglu, M. (2004) Kinetics of the Photocatalytic Decolorization of an Azo Reactive Dye in Aqueous ZnO Suspensions. Industrial & Engineering Chemistry Research, 43, 6035-6039.

[28]   Malik, P.K. and Saha, S.K. (2003) Oxidation of Direct Dyes with Hydrogen Peroxide using Ferrous Ion as Catalyst. Separation and Purification Technology, 31, 241-250.

[29]   Akash, T. and Gidde, M.R. (2014) Decolourization of Nigrosine WS (AB2) Dye by Solar Photo-Fenton Process. The International Journal of Science & Technology, 2, 68-73.

[30]   Jr, A.M., Quina, F.H., Gozzi, F., Silva, V.O., Friedrich, L.C. and Moraes, J.E.F. (2012) Fundamental Mechanistic Studies of the Photo-Fenton Reaction for the Degradation of Organic Pollutants. In: Puzyn, T., Ed., Organic Pollutants Ten Years after the Stockholm Convention Environmental and Analytical Update, InTech.

[31]   Petri, B.G., Watts, R.J., Teel, A.L., Huling, S.G. and Brown, R.A. (2011) Fundamentals of Isco Using Hydrogen Peroxide. In: Siegrist, R.L., Crimi, M. and Simpkin, T.J., Eds., In Situ Chemical Oxidation for Groundwater Remediation, Springer, Berlin.