Palm | Kelapa Sawit

This study aims to obtain freshwater macroalgae species that contain a high oil content which can be converted into biodiesel. Green macroalgae samples collected from freshwater ponds and rivers in the Bogor Botanical Gardens, fields in Dago Biru (Bandung), Lido Lake in Sukabumi, and Lake Situ Bagendit in Garut.

Macroalgae samples were then cleaned and dried with sun-dried for 1-2 days and then re-weighed and then dried in an oven with a temperature of 60 ^oC for 2-3 days to obtain a constant dry weight. Samples of algae that have been dried and then extracted by maceration method using the solvent n-hexane for 2x24 hours, then partitioned with methanol and made soluble pigment removal using activated carbon for 2-3 days.

The extract then evaporated with a vacuum evaporator and obtain algae oil. The quality of the extracted algal oil then analyzed based on the value of acid number, saponification and iodine numbers using standard methods, ie successive FBI-03-A01, FBIA03-FBI-03 and A04-03. Results of quantification analysis of oil content of macroalgae were tested showed Nitella sp. 0.61% w / w, Cladophora sp. 0.57% w / w, Hydrodictyon sp. 0.54% w / w, Chara sp. 0.3% w / w, and Spirogyra sp. 0.15% b / b.