TY - JOUR
T1 - Advanced distillation curve method applied to volatility characterization of biodiesel fuels produced by supercritical fluid transesterification of various lipid feedstocks
AU - Anitescu, George
AU - Tavlarides, Lawrence L.
AU - Bruno, Thomas J.
PY - 2011
Y1 - 2011
N2 - To develop efficient reactor and plant designs to optimize the process of biodiesel production, thermophysical and chemical properties of various triglyceride-methanol reactive mixtures as well as those of biofuel are required over wide range of conditions. In this study, the volatility of samples of biodiesel fuels produced by supercritical (SC) transesterification (TE) of triglyceride feedstocks of chicken fat and soybean oil was determined by the advanced distillation curve method. Particularly high temperatures (e.g., ∼400 °C) of the SCTE process decomposed the polyunsaturated fatty acid methyl esters (FAMEs) to lower molecular FAMEs ranged from C 6 to C 15 along with n-alkanes and alkenes. These lighter fuel components shifted the first portion of the distillation curves of the SC biodiesel fuels toward that of the diesel fuel #2. In comparison with biodiesel fuel conventionally produced by catalytic TE, this shift on fuel volatility accounted by more than 100 °C. This means that biodiesel fuels produced by SCTE at ∼400 °C exhibit significantly higher volatility when compared to commercial biodiesel samples produced by conventional catalytic TE. This information will permit efficient fuel system and combustion chamber designs to optimize fuel utilization in diesel engines, decrease of fuel consumption and emission mitigation.
AB - To develop efficient reactor and plant designs to optimize the process of biodiesel production, thermophysical and chemical properties of various triglyceride-methanol reactive mixtures as well as those of biofuel are required over wide range of conditions. In this study, the volatility of samples of biodiesel fuels produced by supercritical (SC) transesterification (TE) of triglyceride feedstocks of chicken fat and soybean oil was determined by the advanced distillation curve method. Particularly high temperatures (e.g., ∼400 °C) of the SCTE process decomposed the polyunsaturated fatty acid methyl esters (FAMEs) to lower molecular FAMEs ranged from C 6 to C 15 along with n-alkanes and alkenes. These lighter fuel components shifted the first portion of the distillation curves of the SC biodiesel fuels toward that of the diesel fuel #2. In comparison with biodiesel fuel conventionally produced by catalytic TE, this shift on fuel volatility accounted by more than 100 °C. This means that biodiesel fuels produced by SCTE at ∼400 °C exhibit significantly higher volatility when compared to commercial biodiesel samples produced by conventional catalytic TE. This information will permit efficient fuel system and combustion chamber designs to optimize fuel utilization in diesel engines, decrease of fuel consumption and emission mitigation.
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M3 - Conference Article
AN - SCOPUS:84861048514
SN - 0065-7727
JO - ACS National Meeting Book of Abstracts
JF - ACS National Meeting Book of Abstracts
T2 - 242nd ACS National Meeting and Exposition
Y2 - 28 August 2011 through 1 September 2011
ER -