Biomass and Phycocyanin Production from Spirulina platensis cultivated in Anaerobically Digested Dairy Manure Waste (ADDMW) with Sodium Bicarbonate Addition

• Main Author: Prianka Ayu Ilhamsyah, Dea
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/43162
• Institution: Institut Teknologi Bandung

Spirulina platensis can be cultivated by using various effluent medium such as Anaerobically Digested Dairy Manure Waste (ADDMW). Large production of ADDMW makes it potential to be used as large-scale S.platensis cultivation medium. However, one of the obstacles in large scale cultivation is aeration for carbon source supply. Sodium bicarbonate additions in ADDMW as a carbon source can increase S.platensis biomass production. This study was conducted to compare the results of S.platensis cultivation in Zarrouk medium and ADDMW medium, also to find the effects of bicarbonate addition in ADDMW medium. The results indicated that there is no significant difference of specific growth between S.platensis cultivated in Zarrouk medium and ADDMW medium. Also, the highest productivity was obtained in ADDMW with 8,4 g/L sodium bicarbonate addition which reached 0.9831 g/L/day. Addition of sodium bicarbonate mostly affects S.platensis’ biomass composition. S.platensis cultivated in ADDMW with 8,4 g/L sodium bicarbonate addition had the highest carbohydrate content of 41,8%. However, the highest phycocyanin concentration of 3,48% was obtained from ADDMW with 16,8 g/L sodium bicarbonate addition. These results indicate that addition of sodium bicarbonate can increase biomass productivity and phycocyanin content. This study might be a consideration for large-scale cultivation of S.platensis in ADDMW medium.