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Please use this identifier to cite or link to this item: http://dspace.utalca.cl/handle/1950/3355

Title: Control strategies for intermittently mixed, forcefully aerated solid-state fermentation bioreactors based on the analysis of a distributed parameter model
Authors: von Meien, O.F.
Luz, L.F.L.
Mitchell, D.A.
Perez-Correa, J.R.
Agosin, E.
Fernandez-Fernandez, M.
Arcas, J.A.
Keywords: biochemical engineering; bioreactors; control; fermentation;; mathematical modeling; packed-bed
Issue Date: Nov-2004
Publisher: Elsevier Ltd.
Citation: Chemical Engineering Science 59 (21): 4493-4504
Abstract: This paper tests different control strategies based on classic proportional integral derivative (PID) and advanced dynamic matrix control (DMC) algorithms for an intermittently stirred, forcefully aerated solid-state fermentation bioreactor. The study was done using a distributed parameter model to reproduce the main operating features of this type of bioreactor. There is predicted to be a remarkable improvement in the bioreactor productivity when control strategies are implemented. For this type of bioreactor, the temperature and water content of the substrate bed can be controlled by saturating the air at the air inlet but manipulating its temperature, coupled with a strategy of water replenishment when the water content of the bed falls below a threshold. Dynamic matrix control is superior to PID control; however, a specific convolution matrix for different stages of the fermentation is necessary due to the changing behavior of the system. This work shows the benefit of mathematical modeling, since the many different operating conditions investigated via simulations would not have been economically feasible to undertake experimentally with a large-scale bioreactor. The results obtained provide an excellent starting point for such large-scale experimental work.
Description: Fernandez-Fernandez, M. Departamento de Ciencias de la Ingeniería,Universidad de Talca,Camino a Los Niches Km.1,Curicó,Chile
URI: http://dspace.utalca.cl/handle/1950/3355
ISSN: 0009-2509
Appears in Collections:Artículos en publicaciones ISI - Universidad de Talca

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