Advantages And Disadvantages Of Biodiesel

1712 Words7 Pages
2. Biodiesel [1,2] At the early of eighteenth century, a novel diesel engine developed by Rudolf Diesel, a famous inventor, who first introduced peanut oil as alternative source to run on diesel engine in 1823 and widely use as the emergency fuel from time to times. However, the drawbacks from vegetable oils uses including fuel costs, shortages and effects on the engine efficiency in several properties were considered. In 1937, Belgian inventor who purposed a chemical process that can convert vegetable oils into fatty acid alkyl esters form, known as Biodiesel. Biodiesel (Fatty acid methyl esters - FAME) derived from triglycerides conversion into methyl or ethyl esters forms via transesterification process which is a reaction of fat or oil with alcohol to yield esters or glycerol. In this converting method, there are three types of catalyzed that can be used such as (1) alkali catalyzed transesterification: undergo the process faster 4000-fold higher than acid catalyst in same amount, (2) acid catalyst transesterification: this catalyst can be used if there is presence of more water and free fatty acid in triglycerides, (3) lipase catalyst transesterification: due to lipases properties that tends to act on long-chain fatty alcohol rather than on short-chain, many type of alcohols were tested with or without the solvent performed in the system. Table 1 show type of catalyst alcohols that can be used in the reaction suggesting that oil from rapeseed with Candida rugosa
Open Document