TY - JOUR AB - In the present study, waste rapeseed oil with high free fatty acids (FFA) was used as feedstock for producing biodiesel. In the pretreatment step, FFA was reduced by distillation refining method. Then, biodiesel was produced by alkaline-catalyzed transesterification process, which was designed according to the 2(4) full-factorial central composite design. The response surface methodology (RSM) was used to optimize the conditions for the maximum conversion to biodiesel and understand the significance and interaction of the factors affecting the biodiesel production. The results showed that catalyst concentration and reaction time were the limiting conditions and little variation in their value would alter the conversion. At the same time, there was a significant mutual interaction between catalyst concentration and reaction time. AD - Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China AN - WOS:000255599900024 AU - Yuan, X. AU - Liu, J. AU - Zeng, G. AU - Shi, J. AU - Tong, J. AU - Huang, G. H. DA - Jul DO - 10.1016/j.renene.2007.09.007 IS - 7 J2 - Renew Energ KW - waste rapeseed oil LA - English N1 - 297em PY - 2008 SN - 0960-1481 SP - 1678-1684 ST - Optimization of conversion of waste rapeseed oil with high FFA to biodiesel using response surface methodology T2 - Renewable Energy TI - Optimization of conversion of waste rapeseed oil with high FFA to biodiesel using response surface methodology UR - ://WOS:000255599900024 VL - 33 ID - 4501 ER -