Modelagem matemática da degradação da glicose, com produção de hidrogênio, em um reator anaeróbio de leito fixo / Mathematical modeling of glycose degradation with hydrogen production in a fixed bed anaerobic reactor

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Mathematical models bring benefits to the understanding of mechanisms involved on wastewater treatment processes because they provide interpretations and make possible performance predictions, evaluation of design alternatives, optimization of future plants or the improvement to existing systems. Therefore, in this work a mathematical model to describe the glucose degradation process, with hydrogen production through the fermentation, in an upflow anaerobic packed-bed reactor is developed. The model equations were based on studies of biochemical kinetics and hydrodynamics features of the system. The parameters considered were the rates of the biochemical reactions involved in the hydrogen production. The calibration was made through the minimization of the global deviation. The parameters determination was obtained with the use of a technique of generation of aleatory numbers, and after that, the method of matrices inversion for the solution of the system of linear equations. The mathematical model developed showed to be adequate for the concentrations prediction along the reactor, and it made possible the representation of the routes of organic material utilization. The oxidation reaction of propionic acid is the main hydrogen production route in the reactor.

ASSUNTO(S)

reator anaeróbio de leito fixo mathematical models produção biológica de hidrogênio upflow anaerobic packed-bed reactor modelagem matemática hydrogen production

ACESSO AO ARTIGO

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