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Citation: GUO Xiao-Ya, ZHENG Yong, ZHOU Bo, ZHENG Jian-Fei. Preparation and Analysis of Bio-oil by Microwave Pyrolysis of Sawdust[J]. Chinese Journal of Applied Chemistry, ;2009, 26(1): 82-85. shu

Preparation and Analysis of Bio-oil by Microwave Pyrolysis of Sawdust

1.
Department of Chemical Engineering, Shanghai University, Shanghai 201800

Corresponding author: GUO Xiao-Ya,
Received Date: 28 December 2007
Available Online: 21 April 2008
Fund Project: 上海市优秀青年教师专项基金(99030306018) (99030306018)上海市教委基金(10011105021)资助项目 (10011105021)

A low temperature method was used to obtain bio-oil from fir sawdust by means of microwave pyrolysis.Fir sawdust was mixed with a microwave absorption medium(ionic liquid) in the pyrolysis process and super-critical CO₂ extraction was used to separate the product.Effects of reaction temperature,ratios of the ionic liquid to fir,and reaction time on the yield of bio-oil were investigated,and the results show that the optimal processing conditions were that ratio of ionic liquid to fir sawdust was 4:3,reaction temperature was 200 ℃,and reaction time was 30 minutes.Yield of bio-oil can reach 21.22%.Bio-oil obtained was analyzed by GC-MS,FTIR,and TG-DTA,and the results revealed that product consisted of aromatic hydrocarbons,such as phenols,esters and acids.TG-DTA showed that the product was a fuel with good combustibility.
- sawdust,
- microwave,
- bio-oil,
- supercritical CO₂
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