KULTIVASI MIKROALGA Spirulina platensis DALAM MEDIA POME DENGAN VARIASI KONSENTRASI POME DAN KOMPOSISI JUMLAH NUTRIEN

Indonesia and Malaysia are known as the largest countries of palm oil producer in the world. Along the development of palm oil industry in Indonesia, there is more liquid waste from manufacturing process of palm oil which is known as Palm Oil Mill Effluent (POME). POME has been treated using method of aerobic and anaerobic ponds to reduce COD and BOD contents , whereas POME still contains nutrients such as C,N,P which are useful as a nutrient for the growth of microalgae. In this research,cultivation of Spirulina platensis cultivated in POME media with various concentrations of 20%, 40%, and 60% V . Urea, NaHCO3, and TSP were given each two days as a nutrient. The cultivation process carried out for 7 days with aeration and 24 hours lighting.The result shows that the best cultivation media is POME with a concentration of 20%. The best nutrient composition is the addition of 25 mg/l Urea, TSP 50 mg/l and 200 mg/l NaHCO3. At the same treatment on a variety of media is obtained that the maximum growth rate of Spirulina platensis is μ = 0.128/day. The nutrient savings gained from the use of POME as a cultivation media is: Carbon by 42,23 % - 129,71 % and 41,46% - 124.44%. for Nitrogen. This research also showed that C,N,P contents of POME decrease by 20,60% - 84,69% ; 87,52% - 93,47% and 29,44% - 76,66% respectively

Cultivation of Microalgae Spirulina platensis in Palm Oil Mill Effluent (POME) Media with Variations of POME Concentration and Nutrient Composition

Indonesia and Malaysia are recognized as the world's leading producers of palm oil. Along with the growth of the palm oil industry in Indonesia, the amount of Palm Oil Mill Effluent has increased. Palm Oil Mill Effluent (POME) is a liquid byproduct of the palm oil production process. POME has been treated using aerobic and anaerobic ponds to lower Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD) levels, but it still includes nutrients like as C,N,P that are beneficial to the development of microalgae. On this study, Spirulina platensis was grown in POME medium with 20%, 40%, and 60% V. concentrations. Every two days, the nutrients Urea, NaHCO3, and TSP were administered. Seven days of aeration and 24-hour lights are used throughout the cultivation phase. The results indicate that POME with a 20 % concentration is the optimal medium for plant growth. Add 25 ppm Urea, 50 ppm TSP, and 200 ppm NaHCO3 for the optimal nutritional composition. At the same treatment on various medium, the highest growth rate of Spirulina platensis is determined to be µ = 0.128% per day, with an optical density of 0.648. Carbon reductions range from 83.03 % to 84.10 %, while Nitrogen savings range from 78 % to 79.55 % when POME is used as a growing medium. This study also shown that the C, N, and P concentrations of POME fall by 93 to 98 %, 99 to 99.5 %, and 92 to 97 %, respectively