Issue 8, 2010
From the journal:

Energy & Environmental Science

Bio-oil production from sub- and supercritical water liquefaction of microalgae Dunaliella tertiolecta and related properties

Shuping Zou,ab   Yulong Wu,*a   Mingde Yang,*a   Chun Lic  and  Junmao Tongd  

* Corresponding authors

a Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, P.R.China
E-mail: wylong@tsinghua.edu.cn, yangmd@tsinghua.edu.cn
Fax: +86-10-69771464
Tel: +86-010-89796088

b School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R.China

c School of Life Science and Technology, Beijing Institute of Technology, Beijing, P.R.China

d Food College, Shihezi University, Shihezi, Xinjiang, P.R.China

Abstract

Microalgae Dunaliella tertiolecta were studied for production of bio-oil through a sub- and supercritical water liquefaction process. The effects of liquefaction temperature, holding time, and feedstock ratio on the yields of the products were investigated. The maximum bio-oil yield is about 36.9%, obtained at a reaction temperature of 360 °C and a holding time of 30 min, with a feedstock ratio of materials to water of 1 : 10. The various physical and chemical characteristics of bio-oil obtained under the most suitable conditions were determined, and detailed chemical compositional analysis of bio-oil was performed using an elemental analyzer, Fourier transform infrared spectroscopy, and gas chromatography–mass spectrometry. The empirical formula of bio-oil with a heating value of 26.62 MJ kg−1 was established as CH1.38O0.43N0.07, and bio-oil was composed of hexadecanoic acid, palmitamide, and fatty acid methyl ester. Overall, the bio-oil obtained from microalgae Dunaliella tertiolecta were presented as a potentially valuable and environmentally friendly feedstock candidate for biofuels and chemicals.

Graphical abstract: Bio-oil production from sub- and supercritical water liquefaction of microalgae Dunaliella tertiolecta and related properties

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Article information

DOI
https://doi.org/10.1039/C002550J
Article type
Paper
Submitted
05 Feb 2010
Accepted
20 Apr 2010
First published
25 Jun 2010

Energy Environ. Sci., 2010,3, 1073-1078

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Bio-oil production from sub- and supercritical water liquefaction of microalgae Dunaliella tertiolecta and related properties

S. Zou, Y. Wu, M. Yang, C. Li and J. Tong, Energy Environ. Sci., 2010, 3, 1073 DOI: 10.1039/C002550J

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