TY - JOUR AB - A two-step technique combining pre-esterification catalyzed by cation exchange resin with transesterification catalyzed by base alkali was developed to produce biodiesel from rapeseed oil deodorizer distillate (RDOD). The free fatty acids (FFAs) in the feedstock were converted to methyl esters in the pre-esterification step using a column reactor packed with cation exchange resin. The acid value of oil was reduced from the initial 97.60 mg-KOH g(-1) oil to 1.12 mg-KOH g(-1) oil under the conditions of cation exchange resin D002 catalyst packed dosage 18 wt.% (based on oil weight), oil to methanol molar ratio 1:9. reaction temperature 60 degrees C, and reaction time 4 h. The biodiesel yield by transesterification was 97.4% in 1.5 h using 0.8 wt.% KOH as catalyst and a molar ratio of oil to methanol 1:4 at 60 degrees C. The properties of RDOD biodiesel production in a packed column reactor followed by KOH catalyzed transesterification were measured up the standards of EN14214 and ASTM6751-03. (C) 2009 Elsevier B.V. All rights reserved. AD - Huazhong Univ Sci & Technol, Coll Life Sci & Technol, Wuhan 430074, Peoples R China AN - WOS:000267692600002 AU - Liu, Y. AU - Wang, L. AU - Yan, Y. J. DA - Jul-Aug DO - 10.1016/j.fuproc.2009.04.005 IS - 7-8 J2 - Fuel Process Technol KW - rapeseed oil deodorizer distillate LA - English N1 - 466vw PY - 2009 SN - 0378-3820 SP - 857-862 ST - Biodiesel synthesis combining pre-esterification with alkali catalyzed process from rapeseed oil deodorizer distillate T2 - Fuel Processing Technology TI - Biodiesel synthesis combining pre-esterification with alkali catalyzed process from rapeseed oil deodorizer distillate UR - ://WOS:000267692600002 VL - 90 ID - 4918 ER -