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Characteristics of Particles in Pyrolysis Oil
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.ORCID iD: 0000-0002-8264-4736
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.ORCID iD: 0000-0002-9395-9928
2016 (English)In: Energy & Fuels, ISSN 0887-0624, E-ISSN 1520-5029, Vol. 30, no 11, p. 9456-9462Article in journal (Refereed) Published
Abstract [en]

Particles filtered out of pyrolysis oil produced through fast pyrolysis of stem wood, willow, reed canary grass, bark, and forest residue were characterized using scanning electron microscopy and energy-dispersive spectroscopy with the aim of identifying particle categories and discussing transport mechanisms of particles and inorganics into the oil. Particles filtered out of both the condensed and the aerosol fractions of the oil displayed three types of morphology: (i) char-like structures (1-15 μm), (ii) spheres (100 nm to 1 μm), and (iii) irregularly shaped residue (50-500 nm). The char-like structures were identified as char. The spheres and irregularly shaped residue shared morphology and composition with tar balls and organic particles with inorganic inclusions. These particles could have formed either during the fast pyrolysis stage or through precipitation from the oil during storage. All particles consisted mainly of C and O but also small amounts of inorganics. The particles from the aerosol fraction of the oil had higher inorganics content than the particles from the condensed fraction. The results were discussed, and suggested transport mechanisms of inorganics into particles were presented.

Place, publisher, year, edition, pages
2016. Vol. 30, no 11, p. 9456-9462
Keywords [en]
Aerosols, Energy dispersive spectroscopy, Pyrolysis, Scanning electron microscopy, Condensed fraction, Fast pyrolysis, Forest residue, Morphology and composition, Organic particles, Pyrolysis oil, Reed canary grass, Transport mechanism, Precipitation (chemical)
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Physical Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27586DOI: 10.1021/acs.energyfuels.6b01726Scopus ID: 2-s2.0-84995931616OAI: oai:DiVA.org:ri-27586DiVA, id: diva2:1058228
Available from: 2016-12-20 Created: 2016-12-19 Last updated: 2019-06-17Bibliographically approved

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Sandström, LindaWiinikka, Henrik

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