SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2016, Vol. 24 ›› Issue (11): 1640-1646.DOI: 10.1016/j.cjche.2016.04.023

• 第25届中国过程控制会议专栏 • 上一篇    

Jatropha curcas L. oil extracted by switchable solvent N, N-dimethylcyclohexylamine for biodiesel production

Shanjin Zeng1,2, Chuandong Tao1,2, Richard Parnas3, Wei Jiang1, Bin Liang1,2, Yingying Liu2, Houfang Lu1,2   

  1. 1 College of Chemical Engineering, Sichuan University, Chengdu 610065, China;
    2 Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu 610065, China;
    3 Institute of Materials Science, Univ. of Connecticut, Storrs, CT 06269-3136, USA
  • 收稿日期:2016-02-05 修回日期:2016-04-18 出版日期:2016-11-28 发布日期:2016-12-06
  • 通讯作者: Houfang Lu
  • 基金资助:

    Supported byDoctoral Fund ofMinistry of Education of China (20130181130006) and the National Natural Science Foundation of China (No.21476150).

Jatropha curcas L. oil extracted by switchable solvent N, N-dimethylcyclohexylamine for biodiesel production

Shanjin Zeng1,2, Chuandong Tao1,2, Richard Parnas3, Wei Jiang1, Bin Liang1,2, Yingying Liu2, Houfang Lu1,2   

  1. 1 College of Chemical Engineering, Sichuan University, Chengdu 610065, China;
    2 Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu 610065, China;
    3 Institute of Materials Science, Univ. of Connecticut, Storrs, CT 06269-3136, USA
  • Received:2016-02-05 Revised:2016-04-18 Online:2016-11-28 Published:2016-12-06
  • Contact: Houfang Lu
  • Supported by:

    Supported byDoctoral Fund ofMinistry of Education of China (20130181130006) and the National Natural Science Foundation of China (No.21476150).

摘要: Biodiesel, which is a renewable and environmentally friendly fuel, has been studied widely to help remedy increasing environmental problems. One of the key processes of biodiesel production is oil extraction fromoilseed materials. Switchable solvents can reversibly change from molecular to ionic solvents under atmospheric CO2, and can be used for oil extraction. N, N-dimethylcyclohexylamine (DMCHA), a switchable solvent, was used to extract oil from Jatropha curcas L. oil seeds to produce biodiesel. The appropriate extraction conditions were:1:2 ratio of seedmass to DMCHA volume, 0.3-1mmparticle size, 200 r·min-1 agitation speed, 60min extraction time, and 30℃ extraction temperature. The extraction ratio was about 83%. This solvent extracted the oil more efficiently than hexane, and ismuch less volatile. By bubbling CO2 under 1 atmand 25℃ for 5 h, the oilwas separated, and DMCHA was recovered after releasing CO2 by bubbling N2 under 1 atmand 60℃ for 2 h. The residual solvent content in oil was about 1.7%. Selectivity of DMCHA was evaluated by detecting the protein and sugar content in oil. Using the oil with residual solvent to conduct transesterification process, the oil conversion ratio was approximately 99.5%.

关键词: Jatrapha curcus L. oil, Extraction, N, N-dimethylcyclohexylamine, Switchable hydrophilic solvent, Biodiesel

Abstract: Biodiesel, which is a renewable and environmentally friendly fuel, has been studied widely to help remedy increasing environmental problems. One of the key processes of biodiesel production is oil extraction fromoilseed materials. Switchable solvents can reversibly change from molecular to ionic solvents under atmospheric CO2, and can be used for oil extraction. N, N-dimethylcyclohexylamine (DMCHA), a switchable solvent, was used to extract oil from Jatropha curcas L. oil seeds to produce biodiesel. The appropriate extraction conditions were:1:2 ratio of seedmass to DMCHA volume, 0.3-1mmparticle size, 200 r·min-1 agitation speed, 60min extraction time, and 30℃ extraction temperature. The extraction ratio was about 83%. This solvent extracted the oil more efficiently than hexane, and ismuch less volatile. By bubbling CO2 under 1 atmand 25℃ for 5 h, the oilwas separated, and DMCHA was recovered after releasing CO2 by bubbling N2 under 1 atmand 60℃ for 2 h. The residual solvent content in oil was about 1.7%. Selectivity of DMCHA was evaluated by detecting the protein and sugar content in oil. Using the oil with residual solvent to conduct transesterification process, the oil conversion ratio was approximately 99.5%.

Key words: Jatrapha curcus L. oil, Extraction, N, N-dimethylcyclohexylamine, Switchable hydrophilic solvent, Biodiesel