Determination of the Composition of Biodiesel Fuel by Measuring its Millimeter Wave Dielectric Properties

Dielectric properties of biodiesel fuel, as well as its blends with conventional mineral diesel fuel are investigated experimentally. It is shown that millimeter waves allow one to carry out real-time nondestructive control of the composition of biodiesel blends with conventional mineral fuel. The highest sensitivity to the composition of blends is exhibited by the measurement of absorption of waves in the short millimeter wave band.