Photocatalytic Detoxification Method for Zero Effluent Discharge in Dairy Industry: Effect of Operational Parameters

Authors: Janhavi Inamdar, S.K. Singh

Abstract:

Laboratory experiments have been performed to investigate photocatalytic detoxification by using TiO2 photocatalyst for treating dairy effluent. Various operational parameters such as catalyst concentration, initial concentration, angle of tilt of solar flat plate reactor and flow rate were investigated. Results indicated that the photocatalytic detoxification process can efficiently treat dairy effluent. Experimental runs with dairy wastewater can be used to identify the optimum operational parameters to perform wastewater degradation on large scale for recycling purpose. Also effect of two different types of reactors on degradation process was analyzed.

Keywords: Photocatalytic detoxification, TiO2 photocatalyst, solar flat plate reactor, Zero effluent discharge.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1076514

References:

[1] C. A. Buckley, C. J. Broukaert and G.E. Rencken, "Waste Water Reuse ,The South African experience", Water Science and Technology, Vol.41: 10-11, 2000, pp. 157-163.
[2] S. Ahmed, D. F. Ollis, "Solar Photoassisted catalytic decomposition of the chlorinated hydrocarbons Trichloroethylene and Trichloromethane," Solar Energy, Vol.32 (5), 1984, pp.597-601.
[3] D. F. Ollis, E. Pelizzetti, N. Serpone, "Photocatalyzed destruction of water contaminants." Environmental Science and Technology, Vol. 35, 1991, pp. 971-976.
[4] K. Vinodgopal, I. Bedja, S. Hotchandani, P. V. Kamat, "A photocatalytic approach for the decolorization of textile azo dyes in colloidal semiconductor suspensions." Langmuir, Vol.10 (6), 1994, pp.1767- 1771.
[5] D.Roche, K.Baskaran, "A preliminary investigation of colour removal from dyeing operation wastewater." WaterTECH Conference, 2000.
[6] Y. Zhang, G. Wang, L. Yang, "Photocatalytic oxidation of dye wastewater" Fine Chemicals, Vol. 17(2), 2000.
[7] D.Y.Goswami., 1997, "A Review of Engineering Developments of Aqueous Phase Solar Photocatalytic Detoxification and Disinfection Processes." Journal of Solar Energy Engineering, Vol. 119(2), 1997, pp.101-107.
[8] P. Wyness, J. F. Klausner, D. Y. Goswami, K. S. Schanze, "Performance of concentrating solar photocatalytic oxidation reactors, part 1: flat-plate configuration." Journal of Solar Energy Engineering, Vol.116, 1994, pp. 2-7
[9] M. March, A. Martin, C. Saltiel, (1995), "Performance Modeling of Nonconcentrating Solar Detoxification systems", Solar Energy, Vol.54 (3), 1995, pp. 143-151.
[10] R. F. P. Nogueira, W.F. Jardim,"TiO2-fixed-bed-reactor for water decontamination using solar light." Solar Energy, Vol. 56, 1996, pp.471-477.
[11] A. Mills, S. N. Elliott, I. P. Parkin, S.A. O-Neill, R.J.Clark, "Novel TiO2 CVD films for semiconductor photocatalysis" Journal of Photochemistry Photobiology A: Chemistry. Vol.151, 2002, pp.171-179.
[12] C. S Turchi, D.F.Ollis, "Photocatalytic Degradation of organic water contaminants: mechanisms involving hydroxyl radical attack, Journal of Catalysis. Vol.122, 1990, pp. 178-192.
[13] C. S. Turchi, D.F.Ollis, "Mixed Reactant photocatalysis: Intermediates and Mutual Rate Inhibition," Journal of Catalysis, Vol. 119, 1989, pp. 483-496.
[14] M. Abdullah, G. Low, R.W. Matthews, "Effects of Common inorganic Anions on rates of Photocatalytic oxidation of Organic carbon over illuminated Titanium Dioxide," Journal of Physical Chemistry, Vol.94(17),1990, pp. 6820-6825.
[15] H. Al-Ekabi, N. Serpone, "Kinetic studies in Heterogeneous Photocatalysis", Langmuir, Vol.5,1989, pp. 250-255.
[16] B. Pare, S.B. Jonnalagadda, H. Tomar, P. Singh, V.W. Bhagwat, "ZnO assisted photocatalytic degradation of cridine orange in aqueous solution using visible irradiation", Desalination, Vol. 232(1-3), 2008, pp. 80-90.
[17] S. D. Sharma, K.K. Saini, C. Kant, C.P. Sharma, S.C. Jain, "Photodegradation of dye pollutant under UV light by nano-catalyst doped titania thin films" Applied Catalysis B: Environmental, Vol.84(1- 2), 2008, pp. 233-240.
[18] C.H. Chiou, C.Y. Wu, R.S. Juang, "Photocatalytic degradation of phenol and m-nitrophenol using irradiated TiO2 in aqueous solutions" Separation and Purification Technology, Vol. 62(3), 2008, pp. 559-564.
[19] Linda Zou, Y. Li , E. Hu , "Photocatalytic Decolorization of Lanasol Blue CE Dye Solution Using a Flat Plate reactor" Journal of Environmental Engineering , Vol. 131(1),2005, pp.102-107.
[20] T. Zhang, T. Oyama, S. Horikoshi, J. Zhao, H. Hidaka, N. Serpone, "Assessment and influence of operational parameters on the TiO2 photocatalytic degradation of sodium benzene sulfonate under highly concentrated solar light illumination" Solar Energy, Vol. 71(5), 2001, pp. 305-313.
[21] J.F. Klausner, A. R. Martin, D.Y.Goswami, K.S. Schanze, "On the accurate determination of reaction rate constants in batch type solar photocatalytic oxidation facilities," Journal of Solar Energy Engineering, Vol.116 (1), 1994, pp.19-24.
[22] H. Al-Ekabi, N. Serpone, "Kinetic studies in Heterogeneous Photocatalysis: 1. Photocatalytic Degradation of Chlorinated Phenols in Aerated Aqueous Solutions over TiO2 Supported on a Glass Matrix," Journal of Physical Chemistry, Vol. 92, 1988, pp.5726-5731.