The Effect of Shaking, CO2 Concentration and Light Intensity on Biomass Growth of Green Microalgae Desmodesmus communis

Abstract

There are many factors that can affect microalgae growth. In this research, four different groups of experiments were set up in order to determine the influence of different mixing conditions, CO2 concentration and light intensities on Desmodesmus communis growth. The range of CO2 concentration in the air-CO2 mixture was 0–16 v/v%, light intensities ranged between100 μmol m-2s-1 and 300 μmol m-2s-1. The best biomass productivity and biomass yield of0.54 g d-1 and 3.53 g l-1 respectively were achieved when mixing was provided by using shaker aswell as gas bubbling with air-CO2 mixture of 96:4 v/v% and light intensity of 300 μmol m-2s-1.