Broadband Determination of Biodiesel Content in Petroleum Diesel Blends by Terahertz Time Domain Spectroscopy
- 6 January 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Terahertz Science and Technology
- Vol. 11 (3), 339-344
- https://doi.org/10.1109/tthz.2021.3049646
Abstract
The biodiesel content in petroleum diesel-biodiesel blends is determined using broadband terahertz time-domain spectroscopy (THz-TDS). We model the spectra of the blend components based on the non-polar characteristics of the samples. The biodiesel content in diesel is determined from the coefficients that best fit the measured spectra to the optimal linear combination of the model for each individual component (pure diesel and pure biodiesel). This method proves to be valid for real-time applications. A simpler approach based on the maximum observed dispersion is also demonstrated to be a distinctive characteristic of a given blend.Keywords
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