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Energies 2017, 10(3), 265; doi:10.3390/en10030265

Qualitative Analysis of Transesterification of Waste Pig Fat in Supercritical Alcohols

1
Waste & Biomass Energy Technology Center, Kongju National University, 1223-24 Cheonan-Daero, Seobuk, Chungnam 31080, Korea
2
Department of Mechanical Engineering, Kathmandu University, 45200 Dhulikhel, Nepal
3
Department of Environmental Engineering, Kongju National University, 1223-24 Cheonan-Daero, Seobuk, Chungnam 31080, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Witold Kwapinski
Received: 23 January 2017 / Revised: 16 February 2017 / Accepted: 17 February 2017 / Published: 23 February 2017
(This article belongs to the Special Issue Thermo-Chemical Conversion of Waste Biomass)
View Full-Text   |   Download PDF [1564 KB, uploaded 23 February 2017]   |  

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. View Full-Text
Keywords: waste pig fat; supercritical methanol; supercritical ethanol; transesterification; biodiesel waste pig fat; supercritical methanol; supercritical ethanol; transesterification; biodiesel
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Poudel, J.; Shah, M.; Karki, S.; Oh, S.C. Qualitative Analysis of Transesterification of Waste Pig Fat in Supercritical Alcohols. Energies 2017, 10, 265.

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