Aplikasi Katalis Berbasis Karbon Aktif Dari Kayu Akasia (Acacia Mangium) Diimpregnasi Basa Pada Sintesis Biodiesel

Abstrak

In producing biodiesel, one aspect that plays an important role is the use of catalysts in triglyceride transesterification reactions. The making of heterogeneous catalysts with activated carbon is carried out using the impregnation method, Acacia mangingum wood sawdust is waste that has not been optimally used so that it has the potential to be developed as an activated carbon carrying the catalyst. In this study the catalyst active phase was dispersed on activated carbon by impregration using a KOH and NaOH solution with concentration of 5 M for 21 hours, this catalyst was applied to the transesterification reaction to produce methyl esters or biodiesel. In the transesterification reaction used used cooking oil raw material reacted with methanol with a reaction time of 2 hours and stirring 600 rpm. The use of activated carbon catalyst was impregnated by KOH using variations in the amount of catalyst 1, 3, and 5% w/w oil and reaction temperature 45, 55, 65, and 75á´¼C, obtained the highest biodiesel yield on the use of 3% w/w catalyst oil at 65á´¼C , with the quality of biodiesel density 0.7724-0.8585 gr/ml, viscosity 4.5485-5.3672 cSt, acid number 1.1222-2.2444, moisture content 0.034-0.246%, and flash point 150-170á´¼C. While the use of activated carbon catalyst was impregnated with NaOH using variations in the amount of catalyst 3, 4, and 5% w/w oil and the reaction temperature50, 55, 60, and 65á´¼C, obtained the highest biodiesel yield on the use of 3% w/w catalyst oil at 60á´¼C, with the quality of biodiesel density 0.89282-0.90722 gr/ml, viscosity 2.3439-4.1601 cSt, acid number 0.84165-2.2444, water content 0.000592-0.071963%, and flash point 128-153á´¼C.