Abstract
An international round robin study of the production of
fast pyrolysis bio-oil was undertaken. A total of 15
institutions in six countries contributed. Three biomass
samples were distributed to the laboratories for
processing in fast pyrolysis reactors. Samples of the
bio-oil produced were transported to a central analytical
laboratory for analysis. The round robin was focused on
validating the pyrolysis community understanding of
production of fast pyrolysis bio-oil by providing a
common feedstock for bio-oil preparation. The round robin
included: distribution of three feedstock samples, hybrid
poplar, wheat straw, and a blend of lignocellulosic
biomasses, from a common source to each participating
laboratory, preparation of fast pyrolysis bio-oil in each
laboratory with the three feedstocks provided, and return
of the three bio-oil products (minimum of 500 mL) with
operational description to a central analytical
laboratory for bio-oil property determination. The
analyses of interest were CHN, S, trace element analysis,
water, ash, solids, pyrolytic lignin, density, viscosity,
carboxylic acid number, and accelerated aging of bio-oil.
In addition, an effort was made to compare the bio-oil
components to the products of analytical pyrolysis
through gas chromatography/mass spectrometry (GC/MS)
analysis. The results showed that clear differences can
occur in fast pyrolysis bio-oil properties by applying
different process configurations and reactor designs in
small scale. The comparison to the analytical pyrolysis
method suggested that pyrolysis (Py)-GC/MS could serve as
a rapid qualitative screening method for bio-oil
composition when produced in small-scale fluid-bed
reactors. Gel permeation chromatography was also applied
to determine molecular weight information. Furthermore,
hot vapor filtration generally resulted in the most
favorable bio-oil product, with respect to water, solids,
viscosity, and carboxylic acid number. These results can
be helpful in understanding the variation in bio-oil
production methods and their effects on bio-oil product
composition.
Original language | English |
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Pages (from-to) | 5111-5119 |
Number of pages | 9 |
Journal | Energy & Fuels |
Volume | 31 |
Issue number | 5 |
DOIs | |
Publication status | Published - 18 May 2017 |
MoE publication type | A1 Journal article-refereed |