Microwave pyrolysis of Douglas fir sawdust pellet

Shoujie Ren, Hanwu Lei, Lu Wang, Quan Bu, Shulin Chen, Joan Wu, Roger Ruan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Microwave pyrolysis of Douglas fir sawdust pellet was investigated to determine the effects of reaction temperature and time on the yields of bio-oil, biogas, and biochar using a central composition design (CCD) and response surface analysis. The research results indicated that thermochemical conversion reactions can take place rapidly in large-sized biomass pellet by using microwave pyrolysis. The yields of bio-oil and biogas were increased with the reaction temperature and time. The highest yield of bio-oil was 53.9% (wet biomass basis) obtained at 470.7°C and 15min. GC/MS analysis indicated that the bio-oils were mainly composed of phenols, guaiacols, furans, ketones/aldehydes, and organic acids. The phenols and guaiacols accounted for the largest amount of chemicals in the bio-oil, which represented 59.7-78.6% under different conditions. The biogases contained high value chemicals, such as carbon monoxide, methane, and short chain hydrocarbons. A third-order reaction mechanism fits well the microwave pyrolysis of Douglas fir pellet with activation energy of 33.5 kJ/mol and a frequency factor of 3.03 s-1.

Original languageEnglish (US)
Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2011, ASABE 2011
PublisherAmerican Society of Agricultural and Biological Engineers
Pages1334-1348
Number of pages15
ISBN (Print)9781618391568
StatePublished - Jan 1 2011
EventAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2011 - Louisville, KY, United States
Duration: Aug 7 2011Aug 10 2011

Publication series

NameAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2011, ASABE 2011
Volume2

Other

OtherAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2011
CountryUnited States
CityLouisville, KY
Period8/7/118/10/11

Keywords

  • Biooil
  • GC/MS
  • Microwave pyrolysis
  • Wood pellet

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  • Cite this

    Ren, S., Lei, H., Wang, L., Bu, Q., Chen, S., Wu, J., & Ruan, R. (2011). Microwave pyrolysis of Douglas fir sawdust pellet. In American Society of Agricultural and Biological Engineers Annual International Meeting 2011, ASABE 2011 (pp. 1334-1348). (American Society of Agricultural and Biological Engineers Annual International Meeting 2011, ASABE 2011; Vol. 2). American Society of Agricultural and Biological Engineers.