Electric properties of biodiesel in the range from 20 Hz to 20 MHz. Comparison with diesel fossil fuel

• Published in: International journal of hydrogen energy Vol. 33; no. 13; pp. 3531 - 3537
• Main Authors: González Prieto, L.E., Sorichetti, P.A., Romano, S.D.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-07-2008
• Subjects: Biodiesel; Complex permittivity; Conductivity; Electric properties; Conductivity; Biodiesel; Complex permittivity; Electric properties
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2007.10.036

Determination of electric properties at the different steps of biodiesel (BD) production contributes to a better understanding of the influence of the variables. Measurements of complex permittivity and conductivity make possible to survey efficiently the diverse steps of the industrial-scale production process, from the conditioning of the raw material to the quality control of the final product. Moreover, electrical measurements are “non-destructive” and require relatively small sample volumes.
In this work, complex permittivity spectra of BD and DF from 20
Hz to 20
MHz are presented. Experimental data were taken in a range of temperatures from 25 to 75
°C, measured with an accuracy of
±
0.1
∘
C
.
The measuring system used in this work requires a sample volume of
25
cm
3
and gives the real part of permittivity (
ε
′
) with an accuracy better than 1%. Dielectric loss (
tg
δ
) can be measured between
10
-
2
and
10
2
.