Study of the Behavior Changes in Physical-Chemistry Properties of Diesel/Biodiesel (B2) Mixtures with Residual Oil and Its Quantification by Partial Least-Squares Attenuated Total Reflection−Fourier Transformed Infrared Spectroscopy (PLS/ATR−FTIR)
| Autor: | Thais F. Rezende, Isabel Cristina Pereira Fortes, Itânia P. Soares |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Energy & Fuels. 23:4143-4148 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/ef900302q |
| Popis: | The aim of the present work was to verify the influence caused by the contamination or the addition of residual oil in the blends commercialized in Brazil [2% (v/v) of biodiesel in petrodiesel B2] in physical-chemistry parameters usually used to monitor the fuel quality, such as viscosity, flash point, distillation curve, specific gravity, and cetane index. To carry out the experiments, a set of samples simulating a system of fuel adulteration, mixing together biodiesel and residual oil, was prepared in concentrations varying from 0.5 to 25% (w/w). Then, these samples were submitted to the physical-chemistry assays cited before. The specific gravity presented itself as the most sensitive to adulteration. It detected the adulteration in concentration values of residual oil above 10% (w/w). Afterward, a calibration model was built using a multivariate calibration tool, partial least-squares (PLS), applied to attenuated total reflection/Fourier transformed infrared spectroscopy (ATR/FTIR) data to quantify th... |
| Databáze: | OpenAIRE |
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