Numerical Kinetic and Hydrodynamic Study of Advanced Oxidation Process for a Dye Degradation in a Fluidized Bed Reactor

Document Type : Research Paper


1 PhD Student, Department of Chemical Engineering, Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, Iran

2 Assist. Prof., Department of Chemical Engineering, Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, Iran


Organic contaminants in industrial wastewater are mostly non-biodegradable, so advanced oxidation processes (AOPs) should be used as a promising alternative for conventional treatment processes. In this investigation, degradation of an organic dye was studied in a fluidized bed reactor, using Fenton heterogeneous process. Application of fluidized bed reactor in this process makes it more effective because of high mass transfer and turbulence rate. Pyrite is a natural mineral ironstone which is abundant on earth and is known as a sustainable catalyst for AOPs. In the first part of this study, computational fluid dynamics (CFD) simulation was prepared, which showed a good agreement with the experimental results in dye removal efficiency and hydrodynamics of the reactor. In the second part of the study, a kinetic model was developed for evaluating the hydrodynamic effects on the heterogeneous Fenton reaction in a fluidized bed reactor. Unlike the CFD model, the provided kinetic model does not contain the momentum and mass transfer balances. The CFD results were more similar to the experiment results than the kinetic model. It showed that some of the components that were involved in this process had smaller eddy dissipation rate compared to the kinetic rate.


Main Subjects

 Aghdasinia, H., Arehjani, P., Vahid, B. & Khataee, A., 2016(a), "Fluidized-bed fenton-like oxidation of a textile dye using natural magnetite", Research on Chemical Intermediates, 42(12), 8083-8095.
Aghdasinia, H., Bagheri, R., Vahid, B. & Khataee, A., 2016(b), "Central composite design optimization of pilot plant fluidized-bed heterogeneous Fenton process for degradation of an azo dye", Environmental Technology, 37(21), 2703-2712.
Andreozzi, R., Caprio, V., Insola, A. & Marotta, R., 1999, "Advanced oxidation processes (AOP) for water purification and recovery", Catalysis Today, 53, 51-59.
Babuponnusami, A. & Muthukumar, K., 2014, "A review on Fenton and improvements to the Fenton process for wastewater treatment", Journal of Environmental and Chemical Engineering, 2, 557-572.
Barhoumi, N., Oturan, N., Olvera-Vargas, H., Brillas, S., Gadri, A., Ammar, S. & Oturan, M.A., 2016, "Pyrite as a sustainable catalyst in electro-Fenton process for improving oxidation of sulfamethazine. Kinetics, mechanism and toxicity assessment", Water Research, 94, 52-61.
Ebrahimi Farshchi, M., Aghdasinia, H. & Khataee, A.,  2017, " Simulation of fluidized bed reactor to remove acid yellow 36 by computational fluid dynamics method", Iran Water and Wastewater Sciences and Engineering Congress, University of Tehran, Tehran, Iran. (In Persian)
Garrido-Ramírez, E.G., Theng, B.K.G. & Mora, M.L., 2010, "Clays and oxide minerals as catalysts and nanocatalysts in Fenton-like reactions — A review", Applied Clay Science, 47, 182-192.
Ghafoori, S., Mehrvar, M. & Chan, P.K., 2013, "Photoassisted Fenton-like degradation of aqueous poly (acrylic acid): From mechanistic kinetic model to CFD modeling", Chemical Engineering Research and Design, 91, 2617-2629.
Gogate, P.R. & Pandit, A.B., 2004, "A review of imperative technologies for wastewater treatment I: Oxidation technologies at ambient conditions", Advances in Environmental Research, 8, 501-551.
Langford, K.H., Reid, M. & Thomas, K.V., 2011, "Multi-residue screening of prioritised human pharmaceuticals, illicit drugs and bactericides in sediments and sludge", Journal of Environmental Monitoring, 13, 2284-2291.
Ledakowicz, S. & Gonera, M., 1999, "Optimisation of oxidants dose for combined chemical and biological treatment of textile wastewater", Water Research, 33, 2511-2516.
Lee, W. & Batchelor, B., 1999, "Abiotic reductive dechlorination of chlorinated ethylenes by iron-bearing soil minerals. 1. pyrite and magnetite", Environmantal Science and Technology, 36, 5147-5154.
Versteeg, H. & Malalasekera, W., 2007, An introduction to computational fluid dynamics the finite volume method, 2nd Ed., Pearson Education. U.K.