Publicação
Otimização de reator batelada alimentada para hidrolise de palha de cana de açúcar aplicando a teoria do controle ótimo
| Resumo: | From the economic point of view it is important to process high charges of solid in enzimatic hydrolysis of the lignocellulosic residues for the production of 2G ethanol, but batch operation with high initial charges of substrate can cause inefficient mixture, damaging the reactional process. An attractive alternative is operating the reactors in fed batch. The aim of this work was to determine, applying the theory of optimal control, the optimal feeding profile of substrate in bench reactor. For this, it was tested two kinetic of Michaelis-Menten: pseudo-homogeneous Michaelis-Menten kinetic and Michaelis Menten kinetic with inhibition by the product, in the last kinetic was obtained the best fit to experimental data. The developed algorithm was run in Matlab® software and the simulation results were experimentally validated. Enzymatic hydrolysis assays were performed with hydrothermally pre-treated sugar cane straw followed by the alkaline delignification. It was obtained good fiting of the simulation data with respect to the experimental data, with values of glucose final concentration close to 164.647 g/L (triplicate average) and in simulation the concentration was 174.93 g/L. Proving that the sugar cane straw, besides being a good feedstock cheap and abundant, it has a great energetic potential. Furthermore, the optimal control strategy was very efficient in optimization of the proposed problem. |
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| Autores principais: | Pinto, Vitor Debiazzi Pereira |
| Assunto: | Hidrólise enzimática Controle ótimo Palha de cana de açúcar Sugarcane straw Enzimatic hydrolysis Optimal control ENGENHARIA QUIMICA::PROCESSOS INDUSTRIAIS DE ENGENHARIA QUIMICA |
| Ano: | 2017 |
| País: | Brasil |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | unknown |
| Instituição associada: | IBICT |
| Idioma: | português |
| Origem: | Oasisbr |
| Resumo: | From the economic point of view it is important to process high charges of solid in enzimatic hydrolysis of the lignocellulosic residues for the production of 2G ethanol, but batch operation with high initial charges of substrate can cause inefficient mixture, damaging the reactional process. An attractive alternative is operating the reactors in fed batch. The aim of this work was to determine, applying the theory of optimal control, the optimal feeding profile of substrate in bench reactor. For this, it was tested two kinetic of Michaelis-Menten: pseudo-homogeneous Michaelis-Menten kinetic and Michaelis Menten kinetic with inhibition by the product, in the last kinetic was obtained the best fit to experimental data. The developed algorithm was run in Matlab® software and the simulation results were experimentally validated. Enzymatic hydrolysis assays were performed with hydrothermally pre-treated sugar cane straw followed by the alkaline delignification. It was obtained good fiting of the simulation data with respect to the experimental data, with values of glucose final concentration close to 164.647 g/L (triplicate average) and in simulation the concentration was 174.93 g/L. Proving that the sugar cane straw, besides being a good feedstock cheap and abundant, it has a great energetic potential. Furthermore, the optimal control strategy was very efficient in optimization of the proposed problem. |
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