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Results of the International Energy Agency Round Robin on Fast Pyrolysis Bio-oil Production
Pacific Northwest National Laboratory, US.
Thünen Institute of Wood Research, Germany.
VTT Technical Research Center of Finland, Finland.
BTG Biomass Technology Group BV, Netherlands.
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2017 (English)In: Energy & Fuels, ISSN 0887-0624, E-ISSN 1520-5029, Vol. 31, no 5, p. 5111-5119Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2017. Vol. 31, no 5, p. 5111-5119
Keywords [en]
Biofuels, Carboxylic acids, Chemical analysis, Chemical laboratories, Chromatography, Feedstocks, Filtration, Gas chromatography, Gel permeation chromatography, Laboratories, Routers, Trace elements, Viscosity, Water filtration, Well stimulation, Analytical laboratories, Fast pyrolysis bio-oil, Gas chromatography/Mass spectrometry, International energy agency, Lignocellulosic biomass, Operational description, Qualitative screening, Trace element analysis, Pyrolysis
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-30916DOI: 10.1021/acs.energyfuels.6b03502Scopus ID: 2-s2.0-85020517687OAI: oai:DiVA.org:ri-30916DiVA, id: diva2:1138608
Available from: 2017-09-06 Created: 2017-09-06 Last updated: 2017-10-06Bibliographically approved

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