Abstract：
:Eucalyptus wood powder was first subjected to hydrothermal pretreatment in a high-pressure reactor at 160-190°C, and subsequently fast pyrolyzed in a fluidized bed reactor at 500°C to obtain high quality bio-oil. This study focused on investigating effect of hydrothermal pretreatment on bio-oil properties. Hemicellulose and some metals were effectively removed from eucalyptus wood, while cellulose content was enhanced. No significant charring and carbonization of constituents was observed during hydrothermal pretreatment. Thus pretreated eucalyptus wood gave higher bio-oil yield than original eucalyptus wood. Chemical composition of bio-oil was examined by GC/MS and (13)C NMR analyses. Bio-oil produced from pretreated eucalyptus wood exhibited lower contents of ketones and acids, while much higher levoglucosan content than bio-oil produced from original eucalyptus wood, which would help to improve thermal stability of bio-oil and extract levoglucosan from bio-oil. Hydrothermal pretreatment also improved bio-oil fuel quality through lowering water content and enhancing heating value.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Chang S,Zhao Z,Zheng A,Li X,Wang X,Huang Z,He F,Li Hdoi
10.1016/j.biortech.2013.03.170subject
Has Abstractpub_date
2013-06-01 00:00:00pages
321-8eissn
0960-8524issn
1873-2976pii
S0960-8524(13)00574-9journal_volume
138pub_type
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