Paper Title:
Study on Solvent Extraction of Fast Pyrolysis Bio-Oil
  Abstract

The bio-oil, pyrolyzed in a vacuum fast pyrolysis reactor from larch sawdust, has high percentage of water (45%), low viscosity(9.80 mPa.s) and pH(2.75). The bio-oil sample was analyzed by GC/MS after filtered under vacuum conditions, which contains aldehydes(25.17%), ketons (5.56%), alcohols(11.35%), esters(4.46%), acids(6.54%) and phenols(20.99%). Two schemes, single stage extraction and multistage reflux extraction, were attempted to study the extraction efficiency of solvents, using cyclohexane, dichloromethane, ethyl acetate and butyl acetate. All the fractions were analyzed by GC. Of the four solvents, the efficiency of dichloromethane is highest, while cyclohexane basically has no use. Comparing with single stage extraction, the efficiency of multistage reflux extraction is as high as 1.5 to 3 times. Especially, yields of alcohols and acids, using dichloromethane, are respective 72.39% and 52.27%. However, there is a decline in the extraction for ketons and aldehydes, respectively using dichloromethane and ethyl acetate.

  Info
Periodical
Advanced Materials Research (Volumes 306-307)
Chapter
Chapter 10: Environmental and Green Materials
Edited by
Shiquan Liu and Min Zuo
Pages
1532-1536
DOI
10.4028/www.scientific.net/AMR.306-307.1532
Citation
Q. K. Tian, L. He, H. Zhang, Z. L. Lv, R. Li, "Study on Solvent Extraction of Fast Pyrolysis Bio-Oil", Advanced Materials Research, Vols. 306-307, pp. 1532-1536, 2011
Online since
August 2011
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Price
$32.00
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