Determination of Free Fatty Acid by FT-NIR Spectroscopy in Esterification Reaction for Biodiesel ProductionReportar como inadecuado




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Journal of EnergyVolume 2013 2013, Article ID 301647, 5 pages

Research ArticleDepartment of Technology, Maringá State University UEM, 87506-370 Umuarama, PR, Brazil

Received 26 December 2012; Revised 2 April 2013; Accepted 12 April 2013

Academic Editor: Johan E. Hustad

Copyright © 2013 Djéssica Tatiana Raspe and Camila da Silva. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This work reports the use of FT-NIR spectroscopy coupled with multivariate calibration to determine the percentage of free fatty acids FFA in samples obtained by the esterification of FFA in vegetable oils. The analytical method used as calibration matrix samples of the reaction medium of esterification of oleic acid in soybean oil in proportions of 0.3 to 40 wt% by weight of oleic acid obtained under different experimental conditions and utilized the partial least squares PLS regression. The efficiency of the method was tested to predict the content of FFA in reactions of esterification of oleic acid in soybean oil catalysed by KSF clay and Amberlyst 15 commercial resin, both in a batch mode. Good Correlations were observed between the FT-NIR-PLS method and the reference method AOCS. The results confirm that FT-NIR spectroscopy, in combination with multivariate calibration, is a promising technique for monitoring esterification reaction for biodiesel production.





Autor: Djéssica Tatiana Raspe and Camila da Silva

Fuente: https://www.hindawi.com/



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