The depth-dependent study of microalgae growth under continuous culture conditions at different depths was considered

Abstract

With the extensive use of traditional energy, the structure of human energy consumption needs to be adjusted. Microalgae is a promising clean energy source, and growth model simulation is an effective method to predict the yield of large-scale microalgae culture and improve the production efficiency of microalgae. In this study, the effects of different artificial bioreactor depths on microalgae production were studied in depth by using numerical simulation, using and verifying the growth model of microalgae. Through research, it was found that when the depth of artificial bioreactor was shallow, the maximum microalgae production per unit volume was usually at the place where the initial inorganic nitrogen concentration was maximum, and when the depth was deeper, with the increase of the depth, The initial inorganic nitrogen concentration corresponding to the maximum yield of microalgae per unit volume is decreasing. It is suggested that the dilution rate of the culture medium can be controlled in the range of 0 to 0.005 d⁻¹ to obtain better production results, which can be used to guide the practice of microalgae production.