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Solvent effects on improvement of fuel properties during hydrodeoxygenation process of bio-oil in the presence of Pt/C

Author

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  • Oh, Shinyoung
  • Kim, Ung-Jin
  • Choi, In-Gyu
  • Choi, Joon Weon

Abstract

Bio-oil was subjected to hydrodeoxygenation (HDO) reactions with polar protic (ethanol), polar aprotic (acetone), and nonpolar (ether) solvents in the presence of Pt/C catalyst. Mass balances (gas, light oil, heavy oil and char) of products were influenced by the solvent used. Subjecting the oil to HDO yielded improvement in the following heavy oil properties: water content, heating value, viscosity, acidity, and oxygen level. Especially, the viscosity was reduced from 29.6 cSt of the bio-oil to 2.2–4.4 cSt when ethanol was used, to 3.0–4.2 cSt when acetone was used, and to 6.5–6.7 cSt when ether was used. The initially acidic bio-oil was neutralized by HDO. Furthermore, HDO decreased the water and oxygen content of heavy oil, thereby improving its higher heating value (HHV). Because the polar protic solvent was able to react with bio-oil as a co-reactant during HDO, acid-type components in the bio-oil were converted into acid or ester forms, which were found in the light oil. In terms of carbon recovery from bio-oil to the heavy oil fraction, acetone was the most effective solvent, yielding 72.8% recovery, followed by ether (64.7%) and ethanol (55.3%).

Suggested Citation

  • Oh, Shinyoung & Kim, Ung-Jin & Choi, In-Gyu & Choi, Joon Weon, 2016. "Solvent effects on improvement of fuel properties during hydrodeoxygenation process of bio-oil in the presence of Pt/C," Energy, Elsevier, vol. 113(C), pages 116-123.
    • Handle: RePEc:eee:energy:v:113:y:2016:i:c:p:116-123
    DOI: 10.1016/j.energy.2016.07.027
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    References listed on IDEAS

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    1. Bok, Jin Pil & Choi, Hang Seok & Choi, Joon Weon & Choi, Yeon Seok, 2013. "Fast pyrolysis of Miscanthus sinensis in fluidized bed reactors: Characteristics of product yields and biocrude oil quality," Energy, Elsevier, vol. 60(C), pages 44-52.
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    Cited by:

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    2. Hu, Xun & Gholizadeh, Mortaza, 2020. "Progress of the applications of bio-oil," Renewable and Sustainable Energy Reviews, Elsevier, vol. 134(C).
    3. Zeb, Hassan & Choi, Jaeyeon & Kim, Yunje & Kim, Jaehoon, 2017. "A new role of supercritical ethanol in macroalgae liquefaction (Saccharina japonica): Understanding ethanol participation, yield, and energy efficiency," Energy, Elsevier, vol. 118(C), pages 116-126.
    4. He, Yifeng & Liu, Ronghou & Yellezuome, Dominic & Peng, Wanxi & Tabatabaei, Meisam, 2022. "Upgrading of biomass-derived bio-oil via catalytic hydrogenation with Rh and Pd catalysts," Renewable Energy, Elsevier, vol. 184(C), pages 487-497.
    5. Li, Zhiyu & Jiang, Enchen & Xu, Xiwei & Sun, Yan & Tu, Ren, 2020. "Hydrodeoxygenation of phenols, acids, and ketones as model bio-oil for hydrocarbon fuel over Ni-based catalysts modified by Al, La and Ga," Renewable Energy, Elsevier, vol. 146(C), pages 1991-2007.
    6. Oh, Shinyoung & Lee, Jae Hoon & Choi, Joon Weon, 2020. "Hydrodeoxygenation of crude bio-oil with various metal catalysts in a continuous-flow reactor and evaluation of emulsion properties of upgraded bio-oil with petroleum fuel," Renewable Energy, Elsevier, vol. 160(C), pages 1160-1167.
    7. Li, Bingshuo & Liu, Yixuan & Yang, Tianhua & Feng, Bixuan & Kai, Xingping & Wang, Shurong & Li, Rundong, 2021. "Aqueous phase reforming of biocrude derived from lignocellulose hydrothermal liquefaction: Conditions optimization and mechanism study," Renewable Energy, Elsevier, vol. 175(C), pages 98-107.
    8. Echaroj, Snunkhaem & Santikunaporn, Malee & Phan, Anh N., 2023. "Supercritical ethanol liquefaction of bamboo leaves using functionalized reduced graphene oxides for high quality bio-oil production," Renewable Energy, Elsevier, vol. 204(C), pages 848-857.

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