BIOMASSA DAN KADAR PROTEIN DARI SPIRULINA SP. DAN CHLORELLA SP. PADA KULTUR TUNGGAL DAN CAMPURAN DENGAN MEDIA ANAEROBICALLY DIGESTED DAIRY MANURE WASTEWATER (ADDMW) DALAM OPEN RACEWAY POND

• Main Author: Pradyantama, Rizky
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/68184
• Institution: Institut Teknologi Bandung

Protein is one of the nutrients needed by humans. In this case, microalgae have the potential as an alternative protein source apart from animals and plants. However, one of the problems faced in microalgae cultivation on an industrial scale is the cost of providing synthetic media as a growth medium. ADDMW waste can be used as an alternative as a medium for growing microalgae because the nutrient content is high enough to support the growth of microalgae. This study aimed to determine the effect of single culture of Spirulina sp., single culture of Chlorella sp., and mixed culture of Spirulina sp. and Chlorella sp. on the recovery of biomass, protein, and remediation ability of ADDMW waste. In this research . In this study, ADDMW waste was diluted 25 times. The ratio of culture volume to waste used is 1:4 (v/v). In mixed culture the ratio of Spirulina sp. : Chlorella sp. is 1:1 (v/v) with a cultivation time of 7 days. The highest yield of biomass and specific growth rate was obtained in mixed culture variations of 0.87 g L-1 (dry weight) and 1.46 day-1. The highest protein content was obtained in mixed culture cultivation of 66.75% (dry biomass), while in single culture Spirulina sp. and Chlorella sp. only 40% and 44% respectively. The highest percentage of nitrate reduction was obtained in a single culture of Spirulina sp. of 75.50%. The highest percentage of ammonium reduction was obtained in mixed culture of 88.99%. The highest percentage of orthophosphate reduction was obtained in a single culture of Chlorella sp. by 96.97%. The highest percentage of COD reduction was obtained in single culture cultivation of Chlorella sp. by 14.29%. The highest percentage of BOD reduction was obtained in single culture cultivation of Chlorella sp. by 15.23%.