In-line monitoring of the transesterification reactions for biodiesel production using NIR spectroscopy

FUEL

卷:115

Article

de Lima, Suzana Moreira^1,2  Alves Silva, Barbara Furtado¹  Pontes, Dacio Vieira¹  Pereira, Claudete Fernandes³  Stragevitch, Luiz¹  Pimentel, Maria Fernanda¹ 

[1] Univ Fed Pernambuco UFPE, Dept Engn Quim, Lab Combustiveis LAC, BR-50740521 Recife, PE, Brazil

[2] Inst Fed Educ Ciencia & Tecnol Pernambuco IFPE, Dept Acad Controle & Sistemas Ind DACI, BR-50740540 Recife, PE, Brazil

[3] Univ Fed Rural Pernambuco UFPRE, Dept Quim, Lab Anal Quim Inorgan & Sensores, BR-52071030 Recife, PE, Brazil

关键词: In-line monitoring;    NIR spectroscopy;    Biodiesel;    Transesterification reaction;    Control charts;   

DOI  :  10.1016/j.fuel.2013.06.057

来源: Elsevier

【 摘 要 】

In this work, methods for in-line monitoring of the transesterification reactions of soybean oil with methanol using NIR spectroscopy are developed. Gas chromatography was employed for determining the contents of methyl ester (ME), monoglycerides (MG), diglycerides (DG) and triglycerides (DG) during the transesterification reaction and used as reference to build partial least squares regression (PLS) and multiple linear regression (MLR) calibration models employing NIR spectra. Some pre-processing and variable selection strategies of the spectral data were evaluated. Satisfactory RMSEP values were obtained for the external prediction subset. In addition, a multivariate control chart based on latent variables to monitor the progress of the reactions is also presented. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

Free