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Abstract
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tAn ozonation process was performed using a recycled electrochemical ozone generator sys-tem. A titanium based electrode, coated with nanocomposite of Sn–Sb–Ni was applied asanode in a laboratory-made electrochemical reactor. A constant flow rate of 192 mg/h ofgenerated ozone was entered to an ozonation reactor to contact with a typical target pollut-ant, i.e., Rhodamine B (Rh.B) molecules in aqueous solution. Four operational parameterssuch as: initial dye concentration, pH, temperature and the contact time were evaluatedfor the ozonation process. Experimental findings revealed that for a solution of 8 mg/L ofthe dye, the degradation efficiency could reach to 99.5% after 30 min at pH 3.7 and tem-perature of 45◦C as the optimum conditions. Kinetic studies showed that a second orderequation can describe the ozonation adequately well under different temperatures. Also,considering to the importance of process simulation, a three-layered feed forward back prop-agation artificial neural network model was developed. Sensitivity analysis indicated orderof the operational parameter’s relative importance on the model output as: time pH > Rh . Binitial concentration > temperature.© 2015 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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