The results that have been achieved for the fermentation time variable 144, 168 and 192 hours earned the highest ethanol content is 94% at 168 hours fermentation time, while for variable mass 5.10 yeast, and 15 g obtained the highest ethanol content is 94% in mass yeast 15 gr. Bahan bakar nabati ( Biofuel) adalah bahan bakar yang berasal dari bahan-bahan nabati dan/atau dihasilkan dari bahan-bahan organik lain, yang ditataniagakan sebagai bahan bakar lain. Biji jarak pagar mengandung rendemen minyak nabati sebesar 35 sampai 45 persen. Selain sawit, tanaman lain yang berpotensi untuk menjadi bahan baku biodiesel, salah satunya adalah jarak pagar, dengan memanfaatkan kandungan minyak dari biji. The results showed that the optimum volume was 3 mL enzyme that produces glucose level of 18% which is good for fermentation. Saat ini bahan bakar nabati biodiesel pada program B30 berbahan baku dari minyak sawit (crude palm oil /CPO). Analysis of glucose levels is done by titration using Fehling A and B, while the ethanol concentration measurements with alkoholmeter. The main tool that used is fermentor and distillation tower as a means of separating ethanol from water. Bioethanol purification is done by distillation process. The research was carried out in several stages, including the enzymatic hydrolysis of cassava starch to glucose and continued fermentation of glucose to ethanol. The purpose of this study is to find the optimum time and mass effect on of yeast to produced ethanol as a fuel household stoves. Bioethanol is a product of hydrolysis of starch to glucose, followed by enzymatic fermentation of glucose using yeast Saccharomyces cereviceae to ethanol. Carbohydrate content in cassava tubers is 98,5% so it is worth to be converted to bioethanol. Bioenergi berupa bioetanol, biodiesel, dan biogas yang digunakan sebagai bahan bakar bagi kebutuhan rumah tangga, industri maupun transportasi masyarakat. Just waiting for the good political will of the government and market participants to not have to fear anymore about European bullying to embargo Indonesian palm oil.Manihot glaziovii is a tuber that non-food corps, because it contains cyanide acid (HCN) which are toxic. So, our goal is that our palm oil does not depend on the European market and other foreign markets to achieve. Important note: This production process uses catalysts produced by domestic children, the result of research collaboration between the Chemical Reaction Engineering Laboratory and ITB Catalyst (CaRE ITB) and Pertamina. The D100 diesel fuel product was socialized today in Dumai by Industry Minister Agus Gumiwang and Pertamina’s Managing Director. RU2 Dumai, PT Pertamina (Persero) succeeded in converting palm oil into biohydrocarbon diesel fuel with a 100% palm oil (RBDPO) feed, which produces D100 diesel fuel. Jis a new milestone for the development of biohydrocarbon fuel technology from palm oil.
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