Effects of high-pressure homogenization on physicochemical properties and storage stability of switchgrass bio-oil

Ronghai He, X. Philip Ye, Federico Harte, Burton English

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A high-pressure homogenization (HPH) technique was used to improve the physicochemical properties and storage stability of switchgrass bio-oil. The viscosity, ethanol-insoluble fraction, and mass average molecular weight (Mw) of the bio-oil decreased significantly, and particle size became smaller after HPH processing; however, no significant changes were detected in heating value, water content, density, pH value, or ash content. The bio-oil's chemical composition changed after HPH: amounts of some compounds (furfural, levoglucosan, diethoxymethyl acetate, and lignin-derived compounds) increased, while others (acetic acid and 1,2-ethanediol) decreased. The homogenization processing remarkably improved switchgrass bio-oil stability: the viscosity of bio-oil homogenized at 100 MPa increased by only 13.9% after storage at 40 °C for 60 days, whereas that of unhomogenized oil increased 56% after the same storage period. The operating cost was very modest at only $0.0102/L for bio-oil HPH processing at 100 MPa.

Original languageEnglish (US)
Pages (from-to)415-421
Number of pages7
JournalFuel processing technology
Volume90
Issue number3
DOIs
StatePublished - Mar 1 2009

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Oils
Ashes
Processing
Viscosity
Furaldehyde
Furfural
Ethylene Glycol
Lignin
Operating costs
Acetic acid
Acetic Acid
Water content
Ethanol
Molecular weight
Particle size
Heating
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

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abstract = "A high-pressure homogenization (HPH) technique was used to improve the physicochemical properties and storage stability of switchgrass bio-oil. The viscosity, ethanol-insoluble fraction, and mass average molecular weight (Mw) of the bio-oil decreased significantly, and particle size became smaller after HPH processing; however, no significant changes were detected in heating value, water content, density, pH value, or ash content. The bio-oil's chemical composition changed after HPH: amounts of some compounds (furfural, levoglucosan, diethoxymethyl acetate, and lignin-derived compounds) increased, while others (acetic acid and 1,2-ethanediol) decreased. The homogenization processing remarkably improved switchgrass bio-oil stability: the viscosity of bio-oil homogenized at 100 MPa increased by only 13.9{\%} after storage at 40 °C for 60 days, whereas that of unhomogenized oil increased 56{\%} after the same storage period. The operating cost was very modest at only $0.0102/L for bio-oil HPH processing at 100 MPa.",
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Effects of high-pressure homogenization on physicochemical properties and storage stability of switchgrass bio-oil. / He, Ronghai; Ye, X. Philip; Harte, Federico; English, Burton.

In: Fuel processing technology, Vol. 90, No. 3, 01.03.2009, p. 415-421.

Research output: Contribution to journalArticle

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