Yuan, Xingzhong; Liu, Jia; Zeng, Guangming; Shi, Jingang; … - In: Renewable Energy 33 (2008) 7, pp. 1678-1684
In the present study, waste rapeseed oil with high free fatty acids (FFA) was used as feedstock for producing biodiesel. In the pretreatment step, FFA was reduced by distillation refining method. Then, biodiesel was produced by alkaline-catalyzed transesterification process, which was designed...