TY - JOUR AB - More economic raw materials than refined triglyceride oils for biodiesel production are waste vegetable oils and low-value fats (technical tallows), containing high free fatty acid (FFA) and water contents. This chapter describes the actions to be taken to convert such rather heterogeneous feedstocks to specification compliant biodiesel, including removal of impurities, dehydration and deacidification. Different process schemes for transformation of low- and high-FFA oils and fats into biodiesel are described. Fatty acid esterification is considered in detail as well as simultaneous esterification/transesterification procedures. In particular, the prospects of jatrodiesel, algal and tall biodiesel, and the use of vegetable oil soapstocks are outlined. AD - Bart, JCJ AN - WOS:000283420200010 AU - Bart, J. C. J. AU - Palmeri, N. AU - Cavallaro, S. DO - Book_Doi 10.1533/9781845697761 IS - 7 J2 - Woodhead Publ Ser En KW - (trans)esterification of acidic feedstocks LA - English N1 - Brq24 PY - 2010 SP - 386-433 ST - Processes for biodiesel production from unrefined oils and fats T2 - Biodiesel Science and Technology: From Soil to Oil TI - Processes for biodiesel production from unrefined oils and fats UR - ://WOS:000283420200010 ID - 5294 ER -