Methane and hydrogen flow production enhancements in a two-stage anaerobic co-digestion system using simple robust controllers

https://doi.org/10.58571/CNCA.AMCA.2025.077

Resumen: Anaerobic digestion is a well-known technology for simultaneously degrading organic contaminants or residues and their valorization by generating valuable energy resources such as hydrogen and methane. Co-digestion has been introduced to increase biogas production by combining difficult-todigest organic waste with easily degradable substrates. Two-stage anaerobic digestion has been introduced to enhance energy recovery efficiency and operational stability. Anaerobic digestion is a complex process that requires suitable controllers. This work presents the design and application of two simple robust controllers to improve biogas production compared to nominal operation. Results show that both controller designs can improve biogas production by manipulating the dilution rate of the methanogenic reactor.

¿Cómo citar?

Rodríguez-Jara, M., Vían, J., Velasco-Pérez, A. & Puebla, H. (2025). Methane and hydrogen flow production enhancements in a two-stage
anaerobic co-digestion system using simple robust controllers. Memorias del Congreso Nacional de Control Automático 2025, pp. 451-455. https://doi.org/10.58571/CNCA.AMCA.2025.077

Palabras clave

Process control; Robust control; Nonlinear Model Predictive Control; Anaerobic digestion; Energy production.

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