Dynamics and Control Strategies for a Butanol Fermentation Process


Autoria(s): Mariano, Adriano Pinto; Borba Costa, Caliane Bastos; Wolf Maciel, Maria Regina; Maugeri Filho, Francisco; Pires Atala, Daniel Ibraim; de Angelis, Dejanira de Franceschi; Maciel Filho, Rubens
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/04/2010

Resumo

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Processo FAPESP: 07/00341-1

Processo FAPESP: 06/55177-9

In this work, mathematical modeling was employed to assess the dynamic behavior of the flash fermentation process for the production of butanol. This process consists of three interconnected units as follows: fermentor, cell retention system (tangential microfiltration), and vacuum flash vessel (responsible for the continuous recovery of butanol from the broth). Based on the study of the dynamics of the process, suitable feedback control strategies [single input/single output (SISO) and multiple input/multiple output (MIMO)] were elaborated to deal with disturbances related to the process. The regulatory control consisted of keeping sugar and/or butanol concentrations in the fermentor constant in the face of disturbances in the feed substrate concentration. Another objective was the maintenance of the proper operation of the flash tank (maintenance of the thermodynamic equilibrium of the liquid and vapor phases) considering that oscillations in the temperature in the tank are expected. The servo control consisted of changes in concentration set points. The performance of an advanced controller, the dynamic matrix control, and the classical proportional-integral controller was evaluated. Both controllers were able to regulate the operating conditions in order to accommodate the perturbations with the lowest possible alterations in the process outputs. However, the performance of the PI controller was superior because it showed quicker responses without oscillations.

Formato

2424-2448

Identificador

http://dx.doi.org/10.1007/s12010-009-8754-1

Applied Biochemistry and Biotechnology. Totowa: Humana Press Inc, v. 160, n. 8, p. 2424-2448, 2010.

0273-2289

http://hdl.handle.net/11449/41185

10.1007/s12010-009-8754-1

WOS:000276152700022

Idioma(s)

eng

Publicador

Humana Press Inc

Relação

Applied Biochemistry and Biotechnology

Direitos

closedAccess

Palavras-Chave #Flash fermentation #Biobutanol #Dynamics #Control #PI #DMC
Tipo

info:eu-repo/semantics/article