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Estimating and improving cold filter plugging points by blending biodiesels with different fatty acid contents

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Abstract

Biodiesels are alkyl esters produced by transesterification of higher fatty acids (aliphatic chains composed of 14 to 22 carbon units) from animal fats and/or vegetable oils. The cold filter plugging points (CFPP) of biodiesels are not only higher than that of petro-diesel, but they also differ from the melting point of the raw (unesterified) materials. In this study, we empirically derived equations that estimated the CFPP of a biodiesel based on its fatty acid content, using various biodiesel blends containing four methyl esters with different fatty acid compositions: soybean (SME), palm (PME), rapeseed (RME), and lard (LME). These blending ratio experiments yielded three equations that described the correlation between CFPP and fatty acid content: Y (CFPP, °C) = −3.1X (blending ratio) − 12.7 (PME/SME); Y = 2.2X − 10.7 (LME/SME); and Y = −4.0X − 13.0 (PME/RME). We also obtained the correlation between CFPP and total saturated fatty acid methyl ester content in the biodiesels: Y (CFPP, °C) = 0.449X (total saturated fatty acid methyl ester content, wt%) − 9.198. These empirical equations accurately predicted CFPP values of biodiesel compounds with known fatty acid compositions, facilitating the use of diverse biodiesels in industrial fields.

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Authors and Affiliations

  1. School of Biological Sciences and Technology, Chonnam National University, Gwangju, 500-757, Korea

    Gwi-Taek Jeong & Don-Hee Park

  2. Engineering Research Institute, Chonnam National University, Gwangju, 500-757, Korea

    Gwi-Taek Jeong, Jae-Hee Park & Seok-Hwan Park

  3. Interdisciplinary Program of Graduate School for Bioenergy and Biomaterials, Chonnam National University, Gwangju, 500-757, Korea

    Jae-Hee Park, Seok-Hwan Park & Don-Hee Park

  4. Biotechnology Research Institute, Chonnam National University, Gwangju, 500-757, Korea

    Don-Hee Park

  5. Institute of Bioindustrial Technology, Chonnam National University, Gwangju, 500-757, Korea

    Don-Hee Park

  6. Research Institute for Catalysis, Chonnam National University, Gwangju, 500-757, Korea

    Don-Hee Park

  7. Functional Food Research Center, Chonnam National University, Gwangju, 500-757, Korea

    Don-Hee Park

Authors
  1. Gwi-Taek Jeong
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  2. Jae-Hee Park
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  3. Seok-Hwan Park
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  4. Don-Hee Park
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Correspondence to Don-Hee Park.

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The first two authors equally contributed to this work.

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Jeong, GT., Park, JH., Park, SH. et al. Estimating and improving cold filter plugging points by blending biodiesels with different fatty acid contents. Biotechnol Bioproc E 13, 505–510 (2008). https://doi.org/10.1007/s12257-008-0144-y

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  • DOI: https://doi.org/10.1007/s12257-008-0144-y

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