Comparing biofuels obtained from pyrolysis, of soybean oil or soapstock, with traditional soybean biodiesel: Density, kinematic viscosity, and surface tensions

Kenneth M. Doll, Brajendra K. Sharma, Paulo A.Z. Suarez, Sevim Z. Erhan

Research output: Contribution to journalArticlepeer-review

Abstract

A product with diesel-like properties was synthesized by a pyrolysis method, from either edible soybean oil or an inedible soybean soapstock starting material (PD and SD, respectively). Some physical properties of the material were studied, neat and in blends, with both high- and low-sulfur diesel fuels (HSD and LSD) and at a range of different temperatures. The kinematic viscosities at 40 °C were 4.5 mm2 s-1 for PD and 3.8 mm2 s-1 for SD, which were reduced in a linear fashion by the addition of HSD or LSD. The densities of the fuels at 40 °C were 0.853 apd 0.844 g mL-1, very similar to the density of HSD. The surface tensions of the compounds, also at 40 °C, were 27.1 mN m-1 for PD and 26.2 mN m-1 for SD. A comparison to traditional biodiesel was made and, overall, lead to the conclusion that the pyrolysis products are a viable alternative.

Original languageEnglish (US)
Pages (from-to)2061-2066
Number of pages6
JournalEnergy and Fuels
Volume22
Issue number3
DOIs
StatePublished - May 1 2008
Externally publishedYes

Keywords

  • ISTC

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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