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Issue 92, 2015
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Physiochemical characterization of synthetic bio-oils produced from bio-mass: a sustainable source for construction bio-adhesives

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Abstract

This paper investigates physicochemical properties of four different types of bio-oil produced through hydrothermal liquefaction (HTL) and vacuum pyrolysis including wood pallet, corn stover, miscanthus and swine manure. It should be noted that the term bio-oil in this paper is used to refer to synthesized oil from post processing of biomass. Accordingly, swine manure was processed under HTL conditions of 340 °C, 10–12 MPa with 15 min residence time. Bio-oils from miscanthus, corn stover and wood pellet were produced at 450 °C under vacuum pyrolysis. Furthermore, in this paper the merit of applying each of these bio-oils as a precursor for producing bio-adhesive was studied using physiochemical and rheological characterization. Chemical functional groups and individual compounds were identified with GC-MS, NMR and FT-IR, while molecular weight distribution determined using GPC showed that wood pellet bio-oil has the lowest molecular weight followed by those from corn stover, miscanthus and swine manure. In addition, boiling point distributions of different fractions of bio-oils were analyzed. Furthermore, TLC-FID was used to determine different fractions of bio-oils based on their solubility in comparison with those of petroleum. It was shown that overall bio-oils from woody bio-mass have higher amount of alcoholic compounds as evidenced by the presence of strong peaks related to ether and alcohols in FTIR spectra; in addition, the TLC-FID analysis showed presence of higher fraction of fused poly aromatic rings referred to “asphaltene” in bio-oils produced from woody biomass compared to bio-oils from swine manure. The results of our characterization show the importance of feedstock composition and their effect on the characteristics of bio-oils as well as their applicability for use in bio-adhesives production.

Graphical abstract: Physiochemical characterization of synthetic bio-oils produced from bio-mass: a sustainable source for construction bio-adhesives

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Publication details

The article was received on 30 May 2015, accepted on 19 Aug 2015 and first published on 19 Aug 2015


Article type: Paper
DOI: 10.1039/C5RA10267G
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RSC Adv., 2015,5, 75519-75527

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    Physiochemical characterization of synthetic bio-oils produced from bio-mass: a sustainable source for construction bio-adhesives

    S. Hosseinnezhad, E. H. Fini, B. K. Sharma, M. Basti and B. Kunwar, RSC Adv., 2015, 5, 75519
    DOI: 10.1039/C5RA10267G

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