Resumen

HERRERA-LOPEZ, David; RINDERKNECHT-SEIJAS, Noemí  y  POGGI-VARALDO, Héctor M.. A GENERALIZATION OF THE SERIES AND PARALLEL-SERIES REACTION MODEL FOR COMPLETE MIX REACTORS. INCI [online]. 2007, vol.32, n.5, pp.324-327. ISSN 0378-1844.

This paper is organized in five lemmas. In the first three lemmas, the model of consecutive series first order reactions in a continuous stirred tank reactor (liquid phase) is generalized. Normalized concentrations of chemical species involved, as well as the maximum concentration of species A₂ and the hydraulic retention time t_A2,max at which concentration occurs were given by simple algebraic equations. The last two lemmas focused on deriving general equations for the array of parallel-series reactions in complete mix reactors. It was found that there are algebraic equations for the normalized concentrations of species A₁, A₂ and A₂’, and a general equation for any intermediate products from the third step and beyond, as well as equations for the maximum normalized concentrations of A₂ and A’₂ and the corresponding hydraulic retention times t_A2,max and t_A’2,max at which they occur. Finally, simulations of the reductive dechlorination of perchloroethylene (series reaction) in a methanogenic fluidized bed bioreactor, as well as reductive dechlorination of 2,4,6-Trichlorophenol (parallel-series reaction array), were carried out. Both simulations predicted reasonably well concentrations for PCE, 2,4,6-TCP and their corresponding intermediate products compared with experimental results of the literature. It is concluded that the generalized models of series and parallel-series first order reactions may be useful for modeling some applications of wastewater treatment of halogenated organic compounds.

Palabras clave : Modelo; Primer Orden; Reacciones en Paralelo-Serie; Reacciones en Serie; Reactor de Mezcla Completa.