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

Shanjin Zeng; Chuandong Tao; Richard Parnas; Wei Jiang; Bin Liang; Yingying Liu; Houfang Lu

doi:10.1016/j.cjche.2016.04.023

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

第25届中国过程控制会议专栏 | Updated：2026-01-06

- Jatropha curcas L. oil extracted by switchable solvent N, N-dimethylcyclohexylamine for biodiesel production
- Chinese Journal of Chemical Engineering Vol. 24, Issue 11, Pages: 1640-1646(2016)
- Affiliations：
  
  1. 2 Institute of New Energy and Low Carbon Technology, Sichuan University,Chengdu,China,610065
  2. 3 Institute of Materials Science, Univ.of Connecticut, Storrs,CT,USA,06269-3136
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.04.023
  CLC：
- Published：2016
- Accepted：
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L. oil extracted by switchable solvent
DOI：

L. oil extracted by switchable solvent DOI： 10.1016/j.cjche.2016.04.023.

摘要

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 CO

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 CO

under 1 atmand 25℃ for 5 h

the oilwas separated

and DMCHA was recovered after releasing CO

by bubbling N

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

he oil conversion ratio was approximately 99.5%.

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