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Published on: October 15, 2015
Treatment of brines by combined Fenton's reagent-aerobic biodegradation. II. Process modelling
Francisco J Rivas1, Fernando J Beltrán, Olga Gimeno
1Departamento de Ingenieri;a Qui;mica y Energética, Universidad de Extremadura, Avenida de Elvas S/N, 06071, Badajoz, Spain. fjrivas@unex.es
Abstract:
Process modelling of the integrated Fenton's reagent-aerobic biodegradation system has been carried out by considering a detailed reaction mechanism for the chemical oxidation step and the generalised Monod equation for the biological treatment. Chemical oxygen demand has been contemplated as a pseudo-component for simulation purposes. The proposed mechanism takes into consideration different features experimentally found. Thus, the inefficient hydrogen peroxide decomposition into oxygen and water, the influence of temperature and other operating variables and the role of oxygen have been considered. The aerobic biodegradation of the effluent after the chemical oxidation has taken place has been well simulated by Monod equation with no inhibitory terms. Dependency on temperature has been correlated by Arrhenius expression.
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