The process of waste animal fat to biodiesel here has four steps: Pre-treatment, Esterification, Trans-esterification, Biodiesel distillation. 1). pre-treatment Before esterification reaction, the raw material waste oil must be filtered, fine filtration and drying process, until we get the standard oil as raw material which has the same physical properties. 2). Esterification Esterification is mainly … Read More