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Qualitative Analysis of Transesterification of Waste Pig Fat in Supercritical Alcohols

Author

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  • Jeeban Poudel

    (Waste & Biomass Energy Technology Center, Kongju National University, 1223-24 Cheonan-Daero, Seobuk, Chungnam 31080, Korea)

  • Malesh Shah

    (Department of Mechanical Engineering, Kathmandu University, 45200 Dhulikhel, Nepal)

  • Sujeeta Karki

    (Department of Environmental Engineering, Kongju National University, 1223-24 Cheonan-Daero, Seobuk, Chungnam 31080, Korea)

  • Sea Cheon Oh

    (Department of Environmental Engineering, Kongju National University, 1223-24 Cheonan-Daero, Seobuk, Chungnam 31080, Korea)

Abstract

In this work, the characteristics of waste pig fat degradation using supercritical alcohols have been studied. Comparative analysis of the influence of supercritical methanol and supercritical ethanol as solvents on the transesterification was the primary focus of this research. The experiments were carried out with waste pig fat to alcohol weight ratios of 1:1.5 (molar ratio: 1:40.5 for methanol and 1:28 for ethanol), 1:2.0 (molar ratio: 1:54 for methanol and 1:37.5 for ethanol) and 1:2.5 (molar ratio: 1:67.5 for methanol and 1:47 for ethanol) at transesterification temperatures 250, 270 and 290 °C for holding time 0, 15, 30, 45 and 60 min. Increase in the transesterification and holding time increased the conversion while increase in alcohol amount from 1:1.5 to 1:2.0 and 1:2.5 had minimal effect on the conversion. Further, majority of the ester composition in using SCM as solvent falls in the carbon range of C17:0, C19:1 and C19:2 while that for SCE falls in the carbon range of C18:0, C20:1 and C20:2. Glycerol was only present while using SCM as solvent.

Suggested Citation

  • Jeeban Poudel & Malesh Shah & Sujeeta Karki & Sea Cheon Oh, 2017. "Qualitative Analysis of Transesterification of Waste Pig Fat in Supercritical Alcohols," Energies, MDPI, vol. 10(3), pages 1-13, February.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:3:p:265-:d:91266
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    References listed on IDEAS

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    1. Jeeban Poudel & Sea Cheon Oh, 2012. "Degradation Characteristics of Wood Using Supercritical Alcohols," Energies, MDPI, vol. 5(12), pages 1-15, November.
    2. Arjun B. Chhetri & K. Chris Watts & M. Rafiqul Islam, 2008. "Waste Cooking Oil as an Alternate Feedstock for Biodiesel Production," Energies, MDPI, vol. 1(1), pages 1-16, April.
    3. Rahmat, Norhasyimi & Abdullah, Ahmad Zuhairi & Mohamed, Abdul Rahman, 2010. "Recent progress on innovative and potential technologies for glycerol transformation into fuel additives: A critical review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(3), pages 987-1000, April.
    4. Nawaraj Sanjel & Jae Hoi Gu & Sea Cheon Oh, 2014. "Transesterification Kinetics of Waste Vegetable Oil in Supercritical Alcohols," Energies, MDPI, vol. 7(4), pages 1-12, April.
    5. Tan, K.T. & Lee, K.T. & Mohamed, A.R., 2011. "Potential of waste palm cooking oil for catalyst-free biodiesel production," Energy, Elsevier, vol. 36(4), pages 2085-2088.
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    1. Jeeban Poudel & Sujeeta Karki & Nawaraj Sanjel & Malesh Shah & Sea Cheon Oh, 2017. "Comparison of Biodiesel Obtained from Virgin Cooking Oil and Waste Cooking Oil Using Supercritical and Catalytic Transesterification," Energies, MDPI, vol. 10(4), pages 1-14, April.
    2. Hoang Chinh Nguyen & Dinh Thi My Huong & Horng-Yi Juan & Chia-Hung Su & Chien-Chung Chien, 2018. "Liquid Lipase-Catalyzed Esterification of Oleic Acid with Methanol for Biodiesel Production in the Presence of Superabsorbent Polymer: Optimization by Using Response Surface Methodology," Energies, MDPI, vol. 11(5), pages 1-12, April.

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