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<p>The primary factors affecting the commercialisation and acceptability of microalgal-based biodiesel are the costs associated with upstream and downstream production processes. Optimising the growth conditions, upscaling, and ehancing the production of biodiesel in a novel, built, tubular, cylindrical, 10-litre photobioreactor is the main objective of this work. Standard methods were used to investigate physiological factors that affect biomass and lipid content. The optimisation process for culture conditions was achieved using a photobioreactor. Biomass concentration, lipid extraction, and quantification were accomplished using filtration, solvent extraction, and gravimetric techniques. During the process of converting lipids into biodiesel, sulphuric acid was employed as a catalyst. To characterise the biodiesel produced, gas chromatography-mass spectroscopy, American Society for Testing for Materials methods and predicted models based on fatty acid composition were used. The following physiological parameters were ideal for lipid production: 30&#xa0;°C, photoperiod (16:08), light intensity (5000&#xa0;lx), nitrogen source (NaNO₃), NaNO₃ (3&#xa0;g/L), culture medium (BG-11), pH (7.5), salinity (30 PSU), carbon source (glucose), and glucose (15&#xa0;g/L). The higher biomass concentration (15.50 ± 0.03), lipid content (72.95 ± 0.13), volumetric lipid productivity (2261.45 ± 0.41), and optimal biodiesel yield (80.46 ± 0.04%) were recorded after the fifth day of cultivation in the photobioreactor. Fatty acids made up 49.93% saturated, 34.67% monounsaturated, and 15.40% polyunsaturated fatty acids in the optimised biodiesel. The biodiesel’s property examined met international criteria. The designed tubular photobioreactor enhanced biomass, lipid and biodiesel yields, while the Coelastrum morum strain SP UID GQ375096.1 shows promise in the production of high-quality biodiesel, as the produced biodiesel satisfied international standards.</p>

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Optimising Culture Parameters, Designing, and Developing a Tubular Photobioreactor to Increase Biomass and Lipid Content by Coelastrum Morum SP UID GQ375096.1 for Biodiesel Production

  • 期刊论文

  • 发表日期：

    2025年12月9日

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  • Abideen. A. Adekanmi,
  • Emmanuel. O. Garuba,
  • Abiodun. A. Onilude,
  • Musa A. Adegboye,
  • Nurudeen A. Azeez

摘要

The primary factors affecting the commercialisation and acceptability of microalgal-based biodiesel are the costs associated with upstream and downstream production processes. Optimising the growth conditions, upscaling, and ehancing the production of biodiesel in a novel, built, tubular, cylindrical, 10-litre photobioreactor is the main objective of this work. Standard methods were used to investigate physiological factors that affect biomass and lipid content. The optimisation process for culture conditions was achieved using a photobioreactor. Biomass concentration, lipid extraction, and quantification were accomplished using filtration, solvent extraction, and gravimetric techniques. During the process of converting lipids into biodiesel, sulphuric acid was employed as a catalyst. To characterise the biodiesel produced, gas chromatography-mass spectroscopy, American Society for Testing for Materials methods and predicted models based on fatty acid composition were used. The following physiological parameters were ideal for lipid production: 30 °C, photoperiod (16:08), light intensity (5000 lx), nitrogen source (NaNO₃), NaNO₃ (3 g/L), culture medium (BG-11), pH (7.5), salinity (30 PSU), carbon source (glucose), and glucose (15 g/L). The higher biomass concentration (15.50 ± 0.03), lipid content (72.95 ± 0.13), volumetric lipid productivity (2261.45 ± 0.41), and optimal biodiesel yield (80.46 ± 0.04%) were recorded after the fifth day of cultivation in the photobioreactor. Fatty acids made up 49.93% saturated, 34.67% monounsaturated, and 15.40% polyunsaturated fatty acids in the optimised biodiesel. The biodiesel’s property examined met international criteria. The designed tubular photobioreactor enhanced biomass, lipid and biodiesel yields, while the Coelastrum morum strain SP UID GQ375096.1 shows promise in the production of high-quality biodiesel, as the produced biodiesel satisfied international standards.