Towards Optimisation of Microalgae Cultivation through Monitoring and Control in Membrane Photobioreactor Systems
This research lays a foundation for optimised membrane photobioreactor performance and introduces novel control parameters crucial for advancing microalgae cultivation techniques and promoting environmental sustainability. Particularly, this study presents an innovative solids retention time (SRT) c...
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| Veröffentlicht in: | Water (Basel) 2024-01, Vol.16 (1), p.155 |
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| creator | Mora-Sánchez, Juan Francisco Ribes, Josep González-Camejo, Josué Seco, Aurora Ruano, María Victoria |
| description | This research lays a foundation for optimised membrane photobioreactor performance and introduces novel control parameters crucial for advancing microalgae cultivation techniques and promoting environmental sustainability. Particularly, this study presents an innovative solids retention time (SRT) controller designed for a pilot-scale membrane photobioreactor. Employing a fuzzy-logic knowledge-based approach, this controller uses the first derivative of pH data dynamics (pH′) as an input variable, directly correlated with nitrogen recovery rate and biomass productivity when normalised by average light irradiance (I2). Through a feedback mechanism, it regulates daily SRT variations, ensuring stable reactor operation, optimal volatile suspended solids concentration, efficient nitrogen removal, and enhanced biomass productivity. Normalised nitrogen recovery rate, considering solar light irradiance and volatile suspended solids concentration, increased by 51% compared to previous studies employing fixed SRT and hydraulic retention time (HRT). Combining this SRT controller with a previously studied HRT controller could potentially amplify biomass productivity efficiency. In addition, controlling or not controlling the HRT and SRT are assessed in terms of filtration performance and GHG emissions. Finally, a new dissolved-oxygen-based parameter shows promise for continuous microalgae culture control. |
| doi_str_mv | 10.3390/w16010155 |
| format | Article |
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| ispartof | Water (Basel), 2024-01, Vol.16 (1), p.155 |
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| language | eng |
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| source | MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals |
| subjects | Algae Automation Biomass Climate change Controllers Efficiency Environmental protection Environmental sustainability Greenhouse gases Microorganisms Nitrogen Productivity Radiation Sensors Water treatment |
| title | Towards Optimisation of Microalgae Cultivation through Monitoring and Control in Membrane Photobioreactor Systems |
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