Resumo

RINCON, ALEJANDRO; ANGULO GARCIA, FABIOLA  e  OLIVAR TOST, GERARD. ANALYSIS AND CONTROL OF AN ANAEROBIC UPFLOW FIXED BED BIOREACTOR. Dyna rev.fac.nac.minas [online]. 2009, vol.76, n.157, pp.123-132. ISSN 0012-7353.

this paper presents the bifurcation analysis in an anaerobic upflow fixed bed bioreactor, which is an anaerobic digestion system useful for wastewater treatment. In the dynamic analysis part, the equilibrium points, linear stability and bifurcation curves are studied, focusing in the washout condition. For the self tuning regulator the parameter estimation and control law are designed, and an integral action is introduced in order to address the disturbances. The simulation studies show the improvement of the performance when a disturbance appears.

Palavras-chave : bifurcation; anaerobic digestion; self tuning regulator.

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