Hydrothermal conversion of big bluestem for bio-oil production: The effect of ecotype and planting location

Jing Gan, Wenqiao Yuan, Loretta Johnson, Donghai Wang, Richard Nelson, Ke Zhang

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Three ecotypes (CKS, EKS, IL) and one cultivar (KAW) of big bluestem (Andropogon gerardii) that were planted in three locations (Hays, KS; Manhattan, KS; and Carbondale, IL) were converted to bio-oil via hydrothermal conversion. Significant differences were found in the yield and elemental composition of bio-oils produced from big bluestem of different ecotypes and/or planting locations. Generally, the IL ecotype and the Carbondale, IL and Manhattan, KS planting locations gave higher bio-oil yield, which can be attributed to the higher total cellulose and hemicellulose content and/or the higher carbon but lower oxygen contents in these feedstocks. Bio-oil from the IL ecotype also had the highest carbon and lowest oxygen contents, which were not affected by the planting location. Bio-oils from big bluestem had yield, elemental composition, and chemical compounds similar to bio-oils from switchgrass and corncobs, although mass percentages of some of the compounds were slightly different.

Original languageEnglish (US)
Pages (from-to)413-420
Number of pages8
JournalBioresource Technology
Volume116
DOIs
StatePublished - Jul 1 2012

Keywords

  • Big bluestem
  • Bio-oil
  • Hydrothermal conversion
  • Liquefaction
  • Planting location

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