Aspects of photobioreactor and algadisk in CO₂ sequestration and biomass production

ABSTRACT

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°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.

KEYWORDS:

• CO₂ sequestration
• biomass
• microalgae
• Algadisk
• biofuel
• photobioreactor

Additional information

Notes on contributors

S. Sivasangari

S. Sivasangari, Assistant Professor, Department of Civil Engineering, Thiagarajar College of Engineering, Madurai.

T. Vel Rajan

Dr. T. Vel Rajan, Head of the Department/ Professor, Department of Civil Engineering, Thiagarajar College of Engineering, Madurai.

J. Nandhini

J. Nandhini, Assistant Professor, Department of Civil Engineering, SRM University, Chennai.