Artículo
Determination of the Acidity of Waste Cooking Oils by Near Infrared Spectroscopy
Autor/es | García-Martín, Juan Francisco
López Barrera, María del Carmen Torres-García, Miguel Zhang, Qing-An Álvarez-Mateos, María Paloma |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Química Universidad de Sevilla. Departamento de Ingeniería Energética |
Fecha de publicación | 2019 |
Fecha de depósito | 2019-09-02 |
Publicado en |
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Resumen | Waste cooking oils (WCO) recycling companies usually have economic losses for buying
WCO not suitable for biodiesel production, e.g., WCO with high free acidity (FA). For this reason,
the determination of FA of WCO by ... Waste cooking oils (WCO) recycling companies usually have economic losses for buying WCO not suitable for biodiesel production, e.g., WCO with high free acidity (FA). For this reason, the determination of FA of WCO by near infrared (NIR) spectroscopy was studied in this work to assess its potential for in situ application. To do this, FA of 45 WCO was measured by the classical titration method, which ranged between 0.15 and 3.77%. Then, the NIR spectra from 800 to 2200 nm of these WCO were acquired, and a partial least squares model was built, relating the NIR spectra to FA values. The accuracy of the model was quite high, providing r2 of 0.970 and a ratio of performance to deviation (RPD) of 4.05. Subsequently, a model using an NIR range similar to that provided by portable NIR spectrometers (950–1650 nm) was built. The performance was lower (r2 = 0.905; RPD = 2.66), but even so, with good accuracy, which demonstrates the potential of NIR spectroscopy for the in situ determination of FA of WCO. |
Identificador del proyecto | LIFE 13-Bioseville ENV/1113 |
Cita | García-Martín, J.F., López Barrera, M.d.C., Torres-García, M., Zhang, Q. y Álvarez-Mateos, M.P. (2019). Determination of the Acidity of Waste Cooking Oils by Near Infrared Spectroscopy. Processes, 7 (5), 304-. |
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