响应面法乌桕脂制备生物柴油研究

Preparation of biodiesel from sapium sebiferum butter using the response surface method

探讨了以乌桕脂为原料,叔丁醇体系利用脂肪酶催化制备生物柴油的工艺。通过响应面法优化,获得最佳工艺条件为:2.5 g乌桕脂中加入0.6 mL甲醇,0.75 mL叔丁醇和9%脂肪酶,50℃反应16 h,生物柴油得率为92.34%;脂肪酶回收利用10次,生物柴油得率仍能保持在85%以上。

A new technique of biodiesel production from sapium sebiferum butter with the catalysis of immobilized lipase was investigated.The response surface method（RSM） was adopted to optimize the reaction conditions.The optimal parameters were：sapium sebiferum butter 2.5 g,methanol 0.6 mL,9% of the lipase,tert-butanol 0.75 mL,reaction temperature 50 ℃,and under this condition,after 16 h of reaction,the highest methyl ester yield of 92.34% was obtained.The lipase was repeat used for 10 cycles,the methyl esters yield was still kept over 85%.