PRODUKSI BIOMASSA CHLORELLA VULGARIS PADA SISTEM MONOKULTUR DAN KULTUR CAMPURAN DENGAN SCENEDESMUS SP. MENGGUNAKAN VERTICAL TANK REACTOR DAN KEMAMPUANNYA DALAM REDUKSI KADAR NITRAT DAN AMONIUM DARI MEDIUM ADDMW DAN MEDIUM WALNE

• Main Author: Almasyhur, Abdullah
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/52904
• Institution: Institut Teknologi Bandung

Microalgae have the ability to grow quickly and do not require a relatively large area for cultivation. In this study, the cultivation of Chlorella vulgaris microalgae was carried out in monoculture and in mixed culture with Scenedesmus sp in a 20L scale Vertical Tank Reactor on anaerobically digested dairy manure waste (ADDMW) as a comparison, with Walne medium. In the mixed culture treatment, the culture volume of C. vulgaris was three times as much as the volume of the Scenedesmus culture (3C: 1S). Culture was observed for 7 days. The results obtained in this study were the highest specific growth rate produced in the treatment of C. vulgaris with Walne medium of 0.407 days-1. The highest percentage of nitrate reduction was produced in mixed culture with Walne medium of 70.3% and the highest reduction rate of nitrate was produced in C. vulgaris treatment with ADDMW medium of 0.601 ppm day-1. The highest percentage of ammonium reduction was produced in mixed culture with walne medium of 67.9% and the reduction rate of ammonium was produced in mixed culture on walne medium with a rate of 0.181 ppm day-1. From the results obtained, treatment with Walne medium shows better results than ADDMW medium. Monoculture conditions showed a greater specific rate than mixed cultures. Optimization is needed for the application of mixed culture and administration of ADDMW medium. Such as mixed culture is done with the ratio of the number of cells between species and pre-treatment on ADDMW medium is done more optimally.