An outline of photosynthetic microorganism growth inside closed photobioreactor designs

Touloupakis, Eleftherios; Faraloni, Cecilia; Carlozzi, Pietro

doi:10.1016/j.biteb.2022.101066

Cited by 10 publications

(2 citation statements)

References 97 publications

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“…In terms of photorespiration, the extent of heat accumulation susceptibility is also determined by the S/V values, as the wider culture surface receives more light, while the heat buffer capacity at the same volume is relatively constant. Heat accumulation problems in outdoor algal culture have been widely reported [22] and various efforts to overcome them, such as the application of heat exchangers, are still considered very expensive [23]. In this study, it is proposed that applying paranet roofing will enhance more efficient natural irradiance control, particularly in efforts to sustain outdoor algal cultures against the extremely high natural irradiance of particular tropical areas.…”

Section: Introductionmentioning

confidence: 99%

Outdoor Inclined Plastic Column Photobioreactor: Growth, and Biochemicals Response of Arthrospira platensis Culture on Daily Solar Irradiance in a Tropical Place

Chrismadha¹,

Satya²,

Satya³

et al. 2022

Metabolites

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Implementation of outdoor photobioreactors has been challenged by an extremely oversaturated daily peak of solar irradiance. This study aims to understand the role of column size and paranet shading as well as to investigate the most convenient light control in outdoor cyanobacterial culture. The photobioreactor (PBR) consisted of plastic columns with a diameter of 12.74 cm (PBRd-20) and 31.85 cm (PBRd-50) laid outdoors and inclined at 158.22° upwards against solar radiation, while paranet shading was provided at 0%, 50%, 70%, and 90% shading capacity. A semi-continuous culture of cyanobacterium Arthrospira (Spirulina) platensis was conducted for 6 weeks with weekly monitoring of the growth parameter as well as the proximate and pigments content, while the daily irradiance and culture maximum temperature were recorded. The result shows that the column diameter of 12.74 cm had a lethal risk of 44.7% and this decreased to 10.5% by widening the column diameter to 31.85 cm. This lethal risk can be eliminated by the application of a paranet at a 50% reduction level for the column diameter of 31.85 cm and a 70% reduction level for the column diameter of 12.74 cm. The highest culture productivity of 149.03 mg/(L·day) was achieved with a PBRd-20 with 50% shading treatment, but a PBRd-50 with 90% shading treatment led to an increase in the protein and phycocyanin content by 66.7% and 14.91%, respectively.

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Section: Introductionmentioning

confidence: 99%

Outdoor Inclined Plastic Column Photobioreactor: Growth, and Biochemicals Response of Arthrospira platensis Culture on Daily Solar Irradiance in a Tropical Place

Chrismadha¹,

Satya²,

Satya³

et al. 2022

Metabolites

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“…Maximizing light availability is crucial, highlighting the importance of the photobioreactor's transparency and surface/volume ratio. These factors are essential in achieving elevated growth rates and enhanced productivity (Dixon et al 2014, Xu et al 2016, Díaz et al 2019, Touloupakis et al 2022. Díaz et al (2019) introduced a novel photobioreactor design known as the Fibonacci-type, which offers several advantages.…”

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confidence: 99%

Estimation of design parameters of the Fibonacci-type photobioreactor 5000 L

Díaz,

Inostroza,

Acién

2024

Lat. Am. J. Aquat. Res.

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The presented Fibonacci-type tubular photobioreactor represents a significant advancement over classical tubular photobioreactors. It exhibits notable flexibility in its geometric design with the ability to adapt its parameters to meet the specific photosynthetic requirements of microalgae, thereby achieving maximum efficiency. As a result, it emerges as a viable alternative to conventional tubular systems. Furthermore, the strategy utilized for optimizing the design of Fibonacci-type photobioreactors is also described. This strategy is applied to design a 5000 L reactor, serving as a potential approach to harnessing these reactors for the industrial-scale production of high-value microalgae with commercial significance.

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