Evolving factor analysis-based method for correcting monitoring delay in different batch runs for use with PLS: On-line monitoring of a transesterification reaction by ATR-FTIR

Trevisan, Marcello G.; Garcia, Camila Martins; Schuchardt, Ulf; Poppi, Ronei J.

doi:10.1016/j.talanta.2007.08.004

Cited by 42 publications

(32 citation statements)

References 29 publications

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“…For example, Knothe [16] applied the PLS technique to quantitatively monitor the transesterification reaction (on 6-L scale) of soybean oil to methyl soyate and correlated the IR data with the 1 H NMR spectroscopic data. Trevisan et al [18] monitored the base-catalyzed transesterification of degummed soybean oil with ethanol on-line using a cylindrical internal reflectance cell of PbSe in the mid-IR range.…”

Section: Infrared (Ir) Spectroscopic Methods [11 14]mentioning

confidence: 99%

Production, characterization and development of standards for biodiesel — A review

Tyagi

Atray

Kumar

et al. 2010

MAPAN

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Biodiesel is being promoted worldwide as a supplement and alternative automotive fuel for petroleum diesel in spite of several technological, economical and social barriers. This has provided an impetus for new research to overcome these deterrents in its production, to establish its quality criteria (standards), and to develop superior analytical methods for quality control and quality assessment of biodiesel in production and entire distribution chain until consumed by end user. The present review paper briefly covers the production, characterization and standardization of biodiesel, having relevance to the preparation of certified reference materials (CRMs) of biodiesel.

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Section: Infrared (Ir) Spectroscopic Methods [11 14]mentioning

confidence: 99%

Production, characterization and development of standards for biodiesel — A review

Tyagi

Atray

Kumar

et al. 2010

MAPAN

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“…The drawback of the GC method is that it is time consuming in terms of sample preparation and analysis and therefore it is not suitable for biodiesel process monitoring. Other methods reported to have been used to monitor or analyze biodiesel production include HPLC (Holcapek et al, 1999;Komers et al, 2001;Türkan and Kalay, 2006), gel permeation chromatography (GPC) (Dubé et al, 2004), size-exclusion chromatography (Arzamendi et al, 2006), NMR (Gelbard et al, 1995) and FTIR spectroscopy (Zagonel et al, 2004;Knothe, 2006;Trevisan et al, 2008), Raman spectroscopy (Chesti et al, 2006) as well as viscometric analysis (Ellis et al, 2008). Among these methods, FTIR spectroscopy is one of the only methods that have the potential to provide real time qualitative and quantitative biodiesel process information without extensive sample preparation.…”

Section: Introductionmentioning

confidence: 99%

FTIR On-line Monitoring of Biodiesel Transesterification

Yuan¹,

Akochi-Koblé²,

Пінчук³

et al. 2014

IJREB

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An on-line biodiesel transesterification monitoring system was developed using a mid-FTIR (Fourier Transform Infrared) spectrometer equipped with a temperature controlled transmission flow cell. A variety of spectral regions were assessed to monitor functional group changes during the transesterification process of Canola oil. The resulting dynamic reaction curves generated were used to gauge reaction progress as well as the final product parameters and compared to its corresponding GC profile. The transesterification process assessed oil: methanol molar ratios ranging from 1:6 to 1:12 (mol/mol) and catalyst concentrations ranging from 0.33% to 1.67% ml/g. Both Beer's law and Partial Least Squares calibration models were developed to quantify the components of interest. On-line FTIR analysis was found to be workable, simple and an improvement over methods such as TLC or GC to monitor the transesterification reaction, providing reaction data in real time. Being able to obtain detailed dynamic information about the process as the reaction takes place provides for more control, the ability to adjust the process if required and allows for optimization to improve product yield and consistency.

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“…They generally require special training, samples collection and involve solvent for sampling preparation. Up to now, only a few works with different analytical techniques such as mid-infrared (MIR) spectroscopy [22,23], near infrared (NIR) spectroscopy [24][25][26][27], Raman spectroscopy [28], ultrasonication-assisted spray ionization mass spectroscopy [29], fluorescence [30] or UV spectroscopy [31] are able to on-line monitor organic reactions (mostly different from transesterification reaction). With these methods, process state can be obtained from whole sample finger-printing.…”

Section: Introductionmentioning

confidence: 99%

On-line monitoring of the transesterification reaction carried out in microreactors using near infrared spectroscopy

Richard

Dubreuil

Thiébaud‐Roux

et al. 2013

Fuel

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Biodiesel can be produced from vegetable oils, animal fats, and waste cooking oils by transesterification with ethanol (also called ethanolysis) in order to substitute fossil fuels. In this work, the batch ethanolysis of high oleic sunflower oil was transferred into a continuous microstructured device, which induces a better control of heat and mass transfers. Various parameters were studied, notably the initial ethanol to oil molar ratio.An innovative method using NIR spectroscopy was also developed to on-line monitor the transesterification reaction of high oleic sunflower oil with ethanol in microreactors (circular PFA tube 1/16" OD, 0.02" ID). The reactions were monitored directly in the microreactors through sequential scans of the reaction medium by the means of an adequate probe. The asset of the method is that no sample collection or preparation is necessary. Partial least squares regression was used to develop calibration and prediction models between NIR spectral data and analytical data obtained by a reference method (gas chromatography with flame ionization detection, GC-FID). This method is fast, safe, reliable, non destructive and inexpensive contrary to conventional procedures, such as gas chromatography and high performance liquid chromatography generally used to determine the composition of crude transesterification medium.

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Evolving factor analysis-based method for correcting monitoring delay in different batch runs for use with PLS: On-line monitoring of a transesterification reaction by ATR-FTIR

Cited by 42 publications

References 29 publications

Production, characterization and development of standards for biodiesel — A review

Production, characterization and development of standards for biodiesel — A review

FTIR On-line Monitoring of Biodiesel Transesterification

On-line monitoring of the transesterification reaction carried out in microreactors using near infrared spectroscopy

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