Abstract:

        This paper surveys some biodiesel production techniques. We emphasize the green production technique of biodiesel. It includes heterogeneous catalyzed transesterification, supercritical fluid process, hydrodeoxygenation and its refining process oriented vacuum distillation, molecular distillation, supercritical fluid extractionfractionation, microfiliration membrane separation and ionexchange absorption. We also give some predictions on the development tendencies of biodiesel.

Key words: biodiesel, transesterification, production techniques, research advances