バイオディーゼル燃料利用実用化に向けての取り組み : 無触媒メチルエステル化法に関する検討(<総説特集>バイオマスアジアの展開〜第3回バイオマス・アジアワークショップから〜)

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Biodiesel fuel is fatty acid methyl-ester derived from fats and oils. In Asian countries, waste edible oils, lipids contained in waste effluent from oil milling or refining process, and oils from industrial crops such as Jatropha might be promising materials for biodiesel fuel, because they do not compete with edible oils. However, these oily materials contain considerable amount of impurities such as free fatty acids. On the other hand, in conventional process for biodiesel fuel production, triglycerides which are main component of fats and oils are reacted with methanol and converted into fatty acid methyl-ester by using alkaline catalyst. However, the alkaline catalyst needs to be removed after the reaction, and removal of the catalyst increases total cost required for the production. Furthermore, in case of the conventional process, free fatty acids need to be removed from the raw material prior to the reaction with methanol because free fatty acids inactivate the alkaline catalyst. Therefore, a non-catalytic reaction process can have many advantages over the conventional process, especially in Asian countries, because it can covert not only triglycerides but also free fatty acids into biodiesel fuel and does not need a process for removal of catalyst. In Japan, some research groups are working on development of non-catalytic reaction processes for production of biodiesel fuel. This paper will introduce various methods newly proposed by these research groups, including supercritical methanol treatment, simultaneous reaction of transesterification and cracking, and superheated methanol vapor treatment.
一般社団法人日本エネルギー学会の論文
2007-06-20

バイオディーゼル燃料利用実用化に向けての取り組み : 無触媒メチルエステル化法に関する検討(<総説特集>バイオマスアジアの展開〜第3回バイオマス・アジアワークショップから〜)

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