Embrapa Instrumentation Embrapa

São Carlos, Brazil

Embrapa Instrumentation Embrapa

São Carlos, Brazil
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Da Rocha G.,Federal University of Paraná | Colnago L.A.,Embrapa Instrumentation Embrapa | Moraes T.B.,Embrapa Instrumentation Embrapa | Zagonel G.F.,Parana Technology Institute TECPAR | And 3 more authors.
Energy and Fuels | Year: 2017

Considering the need for knowing the amount of biodiesel in fuels, in order to attend several legislations around the world, this work aimed to develop a new, rapid, and nondestructive time-domain nuclear magnetic resonance (TD-NMR)-based method for the biodiesel content determination in diesel-biodiesel blends. Main findings have revealed that both the transverse relaxation time (T2) and signal areas from relaxation spectra are highly correlated to biodiesel content in the fuel samples. The highest correlation was reached by applying PLS multivariate regression over T2 decay curve profiles. Therefore, both univariate and multivariate approaches were able to determine biodiesel content in diesel-biodiesel blends with high accuracy directly from fuel samples in a simple, fast, and inexpensive way. © 2017 American Chemical Society.

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