Study of the Influence of the Temperature and Time of Microalgae Cultivation on the Reproduction Rate of <i>Chlorella</i> and <i>Scenedesmus</i> Microalgae When Cultured in a Tubular Photobioreactor
2023
Aleksandra Kalinina | Vladimir Naumov | Alena Verakhina | Svetlana Ovchinnikova | Diana Yakovleva | Aleksandr Dobrov | Tatyana Sokolova | Julia Lukyanova | Polina Afanasieva
The use of algae for carbon dioxide fixation is based on their natural ability to photosynthesize. Dynamic experiments make it possible to calculate the short-term photosynthetic activity of microalgae strains in photobioreactors. In this study, the effect of temperature and culture time on the intensity of reproduction and on CO<sub>2</sub> absorption by some microalgae was evaluated. It was found that the maximum increase in biomass occurred during algae cultivation at 29–32 °C and pH = 8.4. A ratio of ~2.0 was observed between CO<sub>2</sub> absorption and the increase in biomass for different microalgae. When using the <i>Chlorella</i> genus, the increase in biomass under comparable conditions was greater than when cultivating microalgae of the <i>Scenedesmus</i> genus.
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