Читать книгу Biodiesel Production - Группа авторов - Страница 36

These approaches include acids, bases, enzymes, or other novel catalysts, which have been successfully used in batch or semicontinuous studies by researchers to obtain biodiesel or for the pretreatment of feedstock prior to actual conversion from a wide variety of edible and nonedible oils including WCO [3]. Usually, the use of homogeneous catalysts can provide greater conversion in a single round, but for process economics it is always better to dope the necessary functional groups derived from acid, base, enzyme, or transition metals (among other novel catalysts) and then use them as they can typically be reused for a few times before being discarded or recharged. An in‐depth discussion about this is presented in the following sections.