Biodiesel Production from Vegetable Oil Using Heterogenous Acid and Alkali Catalyst
by Junhua Zhang, Shangxing Chen, Rui Yang, Yuanyuan Yan (Fuel/Science Direct) Zanthoxylum bungeanum seed oil (ZSO) with high free fatty acids (FFA) can be used for biodiesel production by ferric sulfate-catalyzed esterification followed by transesterification using calcium oxide (CaO) as an alkaline