Biodiesel from Waste Cooking Oil using Activate Carbon as Adsorbent and Synthesis of Triaacetin using Nitric Acid as Catalyst

Novi Nuraeni
Yenny Febriani Yun
Dewi Meliati Agustini

Jurnal Kartika Kimia
Vol 2 No 1 (2019): Jurnal Kartika Kimia

Waste cooking oil is a waste of frying oil that is containing high free fatty acids (% FFA). The waste could be made to be useful as biodiesel and triacetin. Biodiesel was produced by addition of 4 % (oil weight) activated carbon with stirring for 1hour at 90-100 oC then transesterification of waste cooking oil. The results showed the yield of the biodiesel was 95.28 % with flash point 179oC, water content 0.13 %, acid value 0.59, total glycerol 0.03 %, and the by-product glycerol 10.05 % (oil weight). Triacetin was synthesized by esterification of the glycerol with acetic acid with mol ratio 1 : 7 at 120oC used nitric acid catalyst (5 % glycerol weight). The results showed that the conversion of acetic acid was low, 24.05 %. That showed nitric acid could be a good catalyst in the esterification of triacetin.