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Experimental design for extraction of bio-oils from flax seeds under supercritical ethanol conditions

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Abstract

A central composite design was applied to the extraction of bio-oils from flax seeds under supercritical ethanol (Sc-EtOH) conditions. The effects of three factors (temperature, time, and biomass concentration) on bio-oil and biomass conversion yields were examined. Extraction temperature was statistically found to be the most significant factor which affected both bio-oil yield and biomass conversion. The predicted results matched the experimental results with the following coefficient of determination: (R 2) 0.95 for bio-oil yield and 0.92 for biomass conversion yield. The composition of bio-oils consisted mainly of fatty acid ester derivatives, and other oxygenated hydrocarbons. Based on the relative concentrations of the compounds, the major compound was ethyl oleate.

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Acknowledgments

We would like to thank to Specialist Handan Gaygısız for her great effort in performing the GC–MS analysis.

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Authors and Affiliations

  1. Department of Occupational Health and Safety, Karabük University, 78050, Karabük, Turkey

    Kubilay Tekin

  2. Department of Environmental Engineering, Karabük University, 78050, Karabük, Turkey

    Mehmet K. Akalin

  3. Deparment of Polymer Engineering, Karabük University, 78050, Karabük, Turkey

    Selhan Karagöz

Authors
  1. Kubilay Tekin
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  2. Mehmet K. Akalin
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  3. Selhan Karagöz
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Correspondence to Kubilay Tekin or Selhan Karagöz.

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Tekin, K., Akalin, M.K. & Karagöz, S. Experimental design for extraction of bio-oils from flax seeds under supercritical ethanol conditions. Clean Techn Environ Policy 18, 461–471 (2016). https://doi.org/10.1007/s10098-015-1021-y

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  • DOI: https://doi.org/10.1007/s10098-015-1021-y

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