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dc.contributor.authorRodríguez Torres, María José
dc.contributor.authorMorillas España, Ainoa 
dc.contributor.authorGuzmán Sánchez, José Luis 
dc.contributor.authorAcién Fernández, Francisco Gabriel 
dc.date.accessioned2021-03-04T08:11:49Z
dc.date.available2021-03-04T08:11:49Z
dc.date.issued2021-02-19
dc.identifier.issn1996-1073
dc.identifier.urihttp://hdl.handle.net/10835/10037
dc.description.abstractOne of the most critical variables in microalgae-related processes is the pH; it directly determines the overall performance of the production system especially when coupling with wastewater treatment. In microalgae-related wastewater treatment processes, the adequacy of pH has a large impact on the microalgae/bacteria consortium already developing on these systems. For cost-saving reasons, the pH is usually controlled by classical On/Off control algorithms during the daytime period, typically with the dynamics of the system and disturbances not being considered in the design of the control system. This paper presents the modelling and pH control in open photobioreactors, both raceway and thin-layer, using advanced controllers. In both types of photobioreactors, a classic control was implemented and compared with a Proportional–Integral (PI) control, also the operation during only the daylight period and complete daily time was evaluated. Thus, three major variables already studied include (i) the type of reactors (thin-layers and raceways), (ii) the type of control algorithm (On/Off and PI), and (iii) the control period (during the daytime and throughout the daytime and nighttime). Results show that the pH was adequately controlled in both photobioreactors, although each type requires different control algorithms, the pH control being largely improved when using PI controllers, with the controllers allowing us to reduce the total costs of the process with the reduction of CO2 injections. Moreover, the control during the complete daily cycle (including night) not only not increases the amount of CO2 to be injected, otherwise reducing it, but also improves the overall performance of the production process. Optimal pH control systems here developed are highly useful to develop robust large-scale microalgae-related wastewater treatment processeses_ES
dc.language.isoenes_ES
dc.publisherMDPIes_ES
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectmicroalgaees_ES
dc.subjectthin-layeres_ES
dc.subjectracewayes_ES
dc.subjectphotobioreactores_ES
dc.subjectPI controles_ES
dc.subjectOn/Off controles_ES
dc.titleModelling and pH Control in Raceway and Thin-Layer Photobioreactors for Wastewater Treatmentes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://www.mdpi.com/1996-1073/14/4/1099es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doihttps://doi.org/10.3390/en14041099


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
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