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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/16/1/155 |
| _version_ | 1797358034761023488 |
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| author | Juan Francisco Mora-Sánchez Josep Ribes Josué González-Camejo Aurora Seco María Victoria Ruano |
| author_facet | Juan Francisco Mora-Sánchez Josep Ribes Josué González-Camejo Aurora Seco María Victoria Ruano |
| author_sort | Juan Francisco Mora-Sánchez |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-08T14:55:01Z |
| format | Article |
| id | doaj.art-1b0b9e5f065a410e9545cbc351a98cd1 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-08T14:55:01Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-1b0b9e5f065a410e9545cbc351a98cd12024-01-10T15:11:53ZengMDPI AGWater2073-44412023-12-0116115510.3390/w16010155Towards Optimisation of Microalgae Cultivation through Monitoring and Control in Membrane Photobioreactor SystemsJuan Francisco Mora-Sánchez0Josep Ribes1Josué González-Camejo2Aurora Seco3María Victoria Ruano4CALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Valencia, SpainCALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Valencia, SpainCALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Valencia, SpainCALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Valencia, SpainCALAGUA—Unidad Mixta UV-UPV, Departament d’Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Valencia, SpainThis 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.https://www.mdpi.com/2073-4441/16/1/155instrumentationcontrol and automationfuzzy logicsolids retention timemicroalgaenitrogen removal |
| spellingShingle | Juan Francisco Mora-Sánchez Josep Ribes Josué González-Camejo Aurora Seco María Victoria Ruano Towards Optimisation of Microalgae Cultivation through Monitoring and Control in Membrane Photobioreactor Systems Water instrumentation control and automation fuzzy logic solids retention time microalgae nitrogen removal |
| title | Towards Optimisation of Microalgae Cultivation through Monitoring and Control in Membrane Photobioreactor Systems |
| title_full | Towards Optimisation of Microalgae Cultivation through Monitoring and Control in Membrane Photobioreactor Systems |
| title_fullStr | Towards Optimisation of Microalgae Cultivation through Monitoring and Control in Membrane Photobioreactor Systems |
| title_full_unstemmed | Towards Optimisation of Microalgae Cultivation through Monitoring and Control in Membrane Photobioreactor Systems |
| title_short | Towards Optimisation of Microalgae Cultivation through Monitoring and Control in Membrane Photobioreactor Systems |
| title_sort | towards optimisation of microalgae cultivation through monitoring and control in membrane photobioreactor systems |
| topic | instrumentation control and automation fuzzy logic solids retention time microalgae nitrogen removal |
| url | https://www.mdpi.com/2073-4441/16/1/155 |
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