title: Effective utilization of flue gases in raceway reactor with event-based pH control for microalgae culture.
abstract: This work addresses effective utilization of flue gases through the proper pH control in raceway reactors. The pH control problem has been addressed with an event-based control approach using a Generalized Predictive Controller (GPC) with actuator deadband. Applying this control strategy it is possible to reduce the control effort, and at the same time saving control resources. In the pH process case, the event-based controller with actuator deadband can be tuned to supply only necessary amount of CO2 to keep the pH close to its optimal value. On the other hand, the evaluated control algorithm significantly improves the pH control accuracy, what has a direct influence on biomass production. In order to test the performance of the event-based GPC controller, several experiments have been performed on a real raceway reactor. Additionally, several control performance indexes have been used to compare the analyzed technique with commonly used on/off controller.
authors.affiliation: Dep. Informática y Automática, ETSI Informática, UNED, 28040 Madrid, Spain. Electronic address: a.pawlowski@dia.uned.es.
authors.forename: A
authors.initials: A
authors.lastname: Pawlowski
authors.affiliation: Faculty of Engineering and the Environment, University of Southampton, Southampton, UK. Electronic address: jlmm1f10@soton.ac.uk.
authors.forename: J L
authors.initials: JL
authors.lastname: Mendoza
authors.affiliation: Dep. Informática, University of Almería, ceiA3-CIESOL, 04120 Almería, Spain. Electronic address: joseluis.guzman@ual.es.
authors.forename: J L
authors.initials: JL
authors.lastname: Guzmán
authors.affiliation: Dep. Informática, University of Almería, ceiA3-CIESOL, 04120 Almería, Spain. Electronic address: beren@ual.es.
authors.forename: M
authors.initials: M
authors.lastname: Berenguel
authors.affiliation: Dep. Ingeniería Química, University of Almería, ceiA3, 04120 Almería, Spain. Electronic address: facien@ual.es.
authors.forename: F G
authors.initials: FG
authors.lastname: Acién
authors.affiliation: Dep. Informática y Automática, ETSI Informática, UNED, 28040 Madrid, Spain. Electronic address: sdormido@dia.uned.es.
authors.forename: S
authors.initials: S
authors.lastname: Dormido
mesh_terms: D000465:Algorithms; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D001709:Biotechnology / Q000379:methods*; D018929:Cell Culture Techniques / Q000379:methods*; D005740:Gases / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D058086:Microalgae / Q000254:growth & development*; D055668:Photochemical Processes
chemical_list: D005740:Gases
keywords: Event-based control; Generalized Predictive Control; Microalgae; Raceway reactor; pH control