Aspects of photobioreactor and algadisk in CO2 sequestration and biomass production

In this study investigated the CO2 fixation efficiency and biomass productivity by green algae Chlorella vulgaris which is grown in various concentrations of dairy wastewater supplemented with CO2. The cultivation was carried out at 25 degrees C for various CO2-Air ratios such as (5%, 10%, and 15%). Artificial light-enhancing photosynthesis in bench-scale batch cultures were carried out in suspension (Photobioreactor) and attached (algadisk) for the period of 2 weeks. The maximum carbon fixation efficiency of 87.67 mg/l/day in suspended culture and 88.5 mg/l/d in algadisk was obtained at 15% CO2-Air ratio in dairy wastewater without dilution. Usage of external nutrient supply was supplemented by the nutrient-rich wastewater, which also results in nutrient removal from the dairy wastewater.