Separation, purification and composition analysis of bio-oil from hydrothermal liquefaction of microalgae

FANG Lina; CHEN Yu; LIU Ya; WU Kejing; WU Yulong; YANG Mingde

doi:10.11949/j.issn.0438-1157.20151022

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Separation, purification and composition analysis of bio-oil from hydrothermal liquefaction of microalgae

更新时间：2025-12-10

- Separation, purification and composition analysis of bio-oil from hydrothermal liquefaction of microalgae
- CIESC Journal Issue 9, Pages: 3640-3648(2015)
- 作者机构：
  
  1. 石河子大学食品学院,新疆,石河子,832003
  2. 清华大学核能与新能源技术研究院,北京,100084
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151022
  CLC： Q519
- Online First：05 September 2015，
  
  Published：05 September 2015
- 稿件说明：
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FANG Lina, CHEN Yu, LIU Ya, et al. Separation, purification and composition analysis of bio-oil from hydrothermal liquefaction of microalgae[J]. CIESC Journal, 2015, (9): 3640-3648.
DOI：

FANG Lina, CHEN Yu, LIU Ya, et al. Separation, purification and composition analysis of bio-oil from hydrothermal liquefaction of microalgae[J]. CIESC Journal, 2015, (9): 3640-3648. DOI： 10.11949/j.issn.0438-1157.20151022.

摘要

杜氏盐藻通过水热液化制备得到的生物油

先采用溶剂分割分别得到正己烷相、二氯甲烷相和乙醚相

再对二氯甲烷相进行柱层析分离纯化。正己烷相和乙醚相直接通过GC-MS和FT-IR进行分析

二氯甲烷相先经柱层析分离后结合GC-MS、二次质谱和FT-IR等确认不同馏分的产物组成。研究结果表明:二氯甲烷相经柱层析分离可得到16个馏分

分别是石油醚馏分(A1)

主要是烯烃类;石油醚:乙酸乙酯馏分(A2)

主要是酸类化合物;石油醚:丙酮馏分(A3)

主要是酰胺类;石油醚:甲醇馏分(A4)

主要是烷烃类;甲醇馏分(A5)

主要是十八碳烯酰胺。经柱层析分离纯化后

生物油的回收率高达91.38%;获取较全的生物油组分信息

为藻类液化机理的分析和生物油的改质提供了依据。

Abstract

In the present paper

the bio-oil produced from hydrothermal liquefaction of D. tertiolecta was divided into n-hexane

chloroform and diethyl ether fractions via solvent division at first

and then chloroform fraction was purified by column chromatography. The n-hexane and diethyl ether fractions were directly analyzed by GC-MS and FT-IR

while the separation products obtained from column chromatography of chloroform fraction were combined with secondary mass spectrometry and FT-IR to confirm the product information. The results showed that chloroform fraction can be divided into sixteen components including the petroleum ether fraction (A1) mainly in alkenes

petroleum ether:ethyl acetate fraction (A2) mainly in carboxylic acid

petroleum ether:acetone fraction (A3) mainly in amides

petroleum ether:methanol fraction (A4) mainly in higher alkanes

and methanol fraction (A5) mainly in amides. In addition

the product recovery was reached up to 91.38% after the purification via column chromatography. Meanwhile

some components

which cannot be directly detected by GC-MS

were identified after column chromatography. The results gave a comprehensive insight in the compositions of product obtained from microalgal liquefaction

which provided the basis on further understanding of HTL mechanism and bio-oil upgrading.

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