BIOMASSA DAN KADAR PROTEIN DARI CHLORELLA SP. DAN NANNOCHLOROPSIS SP. PADA KULTUR TUNGGAL DAN CAMPURAN DENGAN MEDIA ANAEROBICALLY DIGESTED DAIRY MANURE WASTEWATER (ADDMW) MENGGUNAKAN OPEN RACEWAY POND
Microalgae has a very good potential in producing protein. In addition, microalgae also have the ability to reduce waste levels in certain pollutants. The provision of synthetic media is often used as a problem in microalgae cultivation. ADDMW waste is considered to have good enough potential to be...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/68181 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Microalgae has a very good potential in producing protein. In addition, microalgae also have the ability to reduce waste levels in certain pollutants. The provision of synthetic media is often used as a problem in microalgae cultivation. ADDMW waste is considered to have good enough potential to be used as a growth medium for microalgae because the nutrient content is high enough to support microalgae growth. This study aims to determine the effect of microalgae cultivation, both monoculture and mixed using Chlorella sp. and Nannochloropsis sp. on the growth rate, biomass produced, protein production, and the efficiency of adsorption of ADDMW waste in an open raceway pond bioreactor. Cultivation was carried out using Chlorella sp. and Nannochloropsis sp. with an initial volume ratio of 1:1 with a cultivation time of 7 days. The dilution of ADDMW waste used is 25 times. The values of specific growth rate, biomass gain, and the highest biomass productivity were obtained in mixed culture variations, namely 1.47 day-1, 0.95 g.L-1, and 0.28 g.L-1 day-1, respectively. The highest protein content was obtained in the mixed culture variation, which was 56.25% (dry biomass), whereas in the single culture Chlorella sp. and Nannochloropsis sp. respectively are 40.42% and 40.11%. Mixed culture had the highest percentage of nitrate and ammonium reduction of 93.79% and 88.85%, respectively. Chlorella sp. culture had the highest percentage of orthophosphate reduction, which was 96.97%. The culture of Nannochloropsis sp. had the highest percentages of COD and BOD reduction of 20.01% and 20.34%, respectively. Mixed culture is superior based on its ability to produce biomass, protein production, and absorption of nitrogen content. While the culture of Nannochloropsis sp. superior in reducing COD and BOD in ADDMW waste.
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