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

Abstract

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 CO2 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 CO2 absorption and the increase in biomass for different microalgae. When using the Chlorella genus, the increase in biomass under comparable conditions was greater than when cultivating microalgae of the Scenedesmus genus.

Keywords

• decarbonization
• photobioreactor
• photosynthetic microalgae
• temperature
• medium pH
• biomass