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

被引:40
|
作者
de Lima, Suzana Moreira [1 ,2 ]
Alves Silva, Barbara Furtado [1 ]
Pontes, Dacio Vieira [1 ]
Pereira, Claudete Fernandes [3 ]
Stragevitch, Luiz [1 ]
Pimentel, Maria Fernanda [1 ]
机构
[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; NEAR-INFRARED SPECTROSCOPY; SOYBEAN OIL; MODELS; CALIBRATION; QUALITY; ETHANOL; ESTERS; PLS;
D O I
10.1016/j.fuel.2013.06.057
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
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.
引用
收藏
页码:46 / 53
页数:8
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