Chin.J.Chem.Eng. ›› 2012, Vol. 20 ›› Issue (4): 740-746.

• ENERGY, RESOURCES AND ENVIRONMENTAL TECHNOLOGY • Previous Articles     Next Articles

Biodiesel production from crude Jatropha curcas L. oil with trace acid catalyst

LIU Yingying1; LU Houfang1; JIANG Wei1; LI Dongsheng1; LIU Shijie2; LIANG Bin1   

  1. 1 Multi-phase Mass Transfer and Reaction Engineering Laboratory, College of Chemical Engineering, Sichuan University, Chengdu 610065, China 2 Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, 1 For-estry Drive, Syracuse, NY 13210, USA
  • Received:2011-06-20 Revised:2011-11-05 Online:2011-11-05 Published:2012-08-28

微量酸催化麻疯树籽油制备生物柴油

刘颖颖1; 鲁厚芳1; 蒋炜1; 李东升1; 刘世界2; 梁斌1   

  1. 1 Multi-phase Mass Transfer and Reaction Engineering Laboratory, College of Chemical Engineering, Sichuan University, Chengdu 610065, China 2 Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, 1 For-estry Drive, Syracuse, NY 13210, USA

Abstract: Biodiesel produced from crude Jatropha curcas L. oil with trace sulfuric acid catalyst (0.02%-0.08% oil) was investigated at 135-184 °C. Both esterification and transesterification can be well carried out simultaneously. Factors affecting the process were investigated, which included the reaction temperature, reaction time, the molar ratio of alcohol to oil, catalyst amount, water content, free fatty acid (FFA) and fatty acid methyl ester (FAME) content. Under the conditions at 165 °C, 0.06% (by mass) H2SO4 of the oil mass, 1.6 MPa and 20︰1 methanol/oil ratio, the yield of glycerol reached 84.8% in 2 hours. FFA and FAME showed positive effect on the transesterification in certain extent. The water mass content below 1.0% did not show a noticeable effect on trans-esterification. Reaction kinetics in the range of 155 °C to 175 °C was also measured.

Key words: free fatty acids, Jatropha curcas L. oil, biodiesel, transesterification, acid catalyst

摘要: Biodiesel produced from crude Jatropha curcas L. oil with trace sulfuric acid catalyst (0.02%-0.08% oil) was investigated at 135-184 °C. Both esterification and transesterification can be well carried out simultaneously. Factors affecting the process were investigated, which included the reaction temperature, reaction time, the molar ratio of alcohol to oil, catalyst amount, water content, free fatty acid (FFA) and fatty acid methyl ester (FAME) content. Under the conditions at 165 °C, 0.06% (by mass) H2SO4 of the oil mass, 1.6 MPa and 20︰1 methanol/oil ratio, the yield of glycerol reached 84.8% in 2 hours. FFA and FAME showed positive effect on the transesterification in certain extent. The water mass content below 1.0% did not show a noticeable effect on trans-esterification. Reaction kinetics in the range of 155 °C to 175 °C was also measured.

关键词: free fatty acids, Jatropha curcas L. oil, biodiesel, transesterification, acid catalyst