Comparative analysis of the performance of biodiesel and petrodiesel

1 . Production methods and processes At present, there are 3 main methods of preparing biodiesel: chemical method, physical chemistry method and biological method. The commonly used chemical method is transesterification, through esterification of vegetable oil or animal oil with methanol or ethanol and other low-carbon alcohols in the presence of acidic or basic catalysts, to produce the [...]