Transesterification Research Paper

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Transesterification process Biodiesel may be produced in batches or continuously by transesterifying triglycerides such as animal fat or vegetables oils with alcohol in presence of a base or acid catalyst. Transesterification process is the process of separating the fatty acids from their glycerol backbone to form fatty acid esters (FAE). Free fatty acid level and moisture percentage are parameters for determining the viability of transesterification process. Transesterification is classified as give below. 1. Alkaline catalyzed transesterification. 2. Acid catalyzed esterification. 3. Acid- alkaline (two stage) transesterification. 4. Non- catalyzed super critical methanol transesterification. Alkaline catalyzed transesterification Alkaline …show more content…

Sodium hydroxide was used as a catalyst because it is cheaper and reacts faster than acid catalyst. The preparation of biodiesel by single stage transesterification process is show in Fig XX. The waste animal fat was converted into methyl esters through alkaline base-catalyzed transesterification process with methanol in the presence of NaOH catalyst. Before transesterification process of waste animal fat, it is heated at 110 to 1200 C for one hour and then removes dust particle and impurities by filtering with cloth filter. After that process, required quantity of waste animal fat was taken in a 1000ml beaker and then required amount of methanol and NaOH were added to the heated oil Continuous heating and stirring with magnetic stirrer were carried with help of magnetic stirrer. Thermometer was used temperature of oil. This mixture was stirred and heated to 600C for 2hours and then allowed to attain room temperature for 8 to 10 hours. Then the biodiesel and glycerol layers were separated in separating funnel. Finally, methyl esters of waste animal fat (crude biodiesel) were water washed twice with normal water. Pure biodiesel was separated and heated to 900C with help of water bath heating. Light and pale yellow colour biodiesel was stored in a

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