Development of large-scale microalgae production in the Middle East

Hirayama, Akihiko; Sueyoshi, Mark; Nakano, Takashi; Ota, Yutaka; Kurita, Hisaka; Tasaki, Masaharu; Kuroiwa, Yoichi; Kato, Toyofumi; Serizawa, Sadayoshi; Kojima, Keisuke; Al-Maamari, Rashid S.; Hasegawa, Takeshi; Thomas‐Hall, Skye R.; Schenk, Peer M.

doi:10.1016/j.biortech.2021.126036

Cited by 10 publications

(2 citation statements)

References 24 publications

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“…Controlled microalgal cultivation has been identified as one of the technologies to bioremediate eutrophied industrial side-streams from aquaculture, wastewater treatment plants, and anaerobic digestion facilities ( Fuentes-Grünewald et al, 2012 ; Mayhead et al, 2018 ; Silkina et al, 2019 ). Several reports have indicated the interest in algal cultivation in the Middle East, and at least one culture collection is established but the need for further investigation of extremophile species has been noted ( Schipper et al, 2019 , 2022 ; Hirayama et al, 2022 ; Rasheed et al, 2022 ). As the largest Middle Eastern country, Saudi Arabia could significantly advance algal cultivation using local resources ( Rasheed et al, 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Cultivation of the polyextremophile Cyanidioschyzon merolae 10D during summer conditions on the coast of the Red Sea and its adaptation to hypersaline sea water

et al. 2023

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The west coast of the Arabian Peninsula borders the Red Sea, a water body which maintains high average temperatures and increased salinity compared to other seas or oceans. This geography has many resources which could be used to support algal biotechnology efforts in bio-resource circularity. However, summer conditions in this region may exceed the temperature tolerance of most currently cultivated microalgae. The Cyanidiophyceae are a class of polyextremophilic red algae that natively inhabit acidic hot springs. C. merolae 10D has recently emerged as an interesting model organism capable of high-cell density cultivation on pure CO2 with optimal growth at elevated temperatures and acidic pH. C. merolae biomass has an interesting macromolecular composition, is protein rich, and contains valuable bio-products like heat-stable phycocyanin, carotenoids, β-glucan, and starch. Here, photobioreactors were used to model C. merolae 10D growth performance in simulated environmental conditions of the mid-Red Sea coast across four seasons, it was then grown at various scales outdoors in Thuwal, Saudi Arabia during the Summer of 2022. We show that C. merolae 10D is amenable to cultivation with industrial-grade nutrient and CO2 inputs outdoors in this location and that its biomass is relatively constant in biochemical composition across culture conditions. We also show the adaptation of C. merolae 10D to high salinity levels of those found in Red Sea waters and conducted further modeled cultivations in nutrient enriched local sea water. It was determined that salt-water adapted C. merolae 10D could be cultivated with reduced nutrient inputs in local conditions. The results presented here indicate this may be a promising alternative species for algal bioprocesses in outdoor conditions in extreme coastal desert summer environments.

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Section: Discussionmentioning

confidence: 99%

Cultivation of the polyextremophile Cyanidioschyzon merolae 10D during summer conditions on the coast of the Red Sea and its adaptation to hypersaline sea water

et al. 2023

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“…For instance, the biomass productivity of the microalga Chlorella sorokiniana for the stirred tank, bubble column, and airlift PBRs were 0.064, 0.097, and 0.072 gdw/L•day, respectively [13]. While the "estimated annual productivity average productivity" of the same microalga in raceway ponds was estimated to be 0.040 gdw/L•day (taking into account that one square meter contains around 400 L) [14].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Scenedesmus obliquus Cultivation in Plastic-Type Flat Panel Photobioreactor for Biodiesel Production

Abdel-Baset,

Matter,

Ali

2024

Sustainability

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A plastic-type flat panel photobioreactor (PTFPP) prototype was designed for microalgae cultivation as biodiesel feedstock. The growth, biomass, and lipid production of the oleaginous microalga Scenedesmus obliquus were optimized through the enhanced design and cultivation conditions in the PTFPP. The optimization conditions include cultivation of the microalga in a flat panel photobioreactor manufactured from a 10 µm-thick plastic sheet with dimensions of 40 cm in width and 60 cm in height. The width of the designed plastic bags was adjusted by “4 ports” of circular adhesion points which make the volumetric cultural capacity 5 L. Cultivation of the microalga was optimized through the replacement of the sodium nitrate of the BBM medium with urea as a nitrogen source. Cultivation bags were subjected to continuous illumination with 3000 lux white, fluorescent lamps and aerated with 1.5 L air/min (equal to 0.3 VVM). Biomass production from the designed PTFPP reached 3 g/L with around 40% lipid content (on a dry weight basis). Based on a GC-MS analysis of the produced fatty acid methyl ester (biodiesel) from S. obliquus, the percentage of C16 and C18 fatty acids reached more than 90% of the defined fatty acids. Out of this percentage, 66.6% were unsaturated fatty acids. The produced fatty acid profile of the S. obliquus biomass cultivated in the designed PTFPP prototype could be considered a suitable feedstock for biodiesel production.

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Enhancing lipid productivity in Nannochloropsis salina by overexpression of endogenous glycerol-3-phosphate dehydrogenase

Koh,

Chang,

Kang

2023

J Appl Phycol

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Development of large-scale microalgae production in the Middle East

Cited by 10 publications

References 24 publications

Cultivation of the polyextremophile Cyanidioschyzon merolae 10D during summer conditions on the coast of the Red Sea and its adaptation to hypersaline sea water

Cultivation of the polyextremophile Cyanidioschyzon merolae 10D during summer conditions on the coast of the Red Sea and its adaptation to hypersaline sea water

Enhanced Scenedesmus obliquus Cultivation in Plastic-Type Flat Panel Photobioreactor for Biodiesel Production

Enhancing lipid productivity in Nannochloropsis salina by overexpression of endogenous glycerol-3-phosphate dehydrogenase

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