Читать книгу Biodiesel Technology and Applications - Группа авторов - Страница 20

Biocatalysts include enzymes especially lipases which are very popular in bio-diesel production [43]. Enzymatic biodiesel production method diminishes problems associated with alkali and acid catalyzed methods. Use of enzyme catalysts has several economic and environmental advantages over chemical biodiesel production processes. Advantages of enzyme catalysis include production of pure and high market value glycerol, minor, or no waste water generation that is why treatment of waste water is not required, mild reaction conditions are required, no soap formation because enzymes can esterify low quality feedstock having high concentration of FFA that is why this method is insensitive to feedstock concentration. Enzymatic biodiesel production is simple so energy consumption is very low, enzymes can be reused because of their easy separation from the reaction mixture, and overall chance of contamination is lower than other transesterification methods [13].