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Determining bio-oil composition via chemometric tools based on infrared spectroscopy

AutorGarcía Martínez, Tomás ; Veses Roda, Alberto ; López Nieto, José Manuel; Puértolas Lacambra, Begoña; Pérez-Ramírez, Javier; Callén Romero, Mª Soledad
Palabras claveChemometric tools
Bio-oil composition
Fourier transform infrared spectroscopy
Gas chromatography-mass spectrometry
Partial least squares regression
Fecha de publicación2017
EditorAmerican Chemical Society
CitaciónACS Sustainable Chemistry and Engineering 5(10): 8710-8719(2017)
ResumenThe development of rapid and accurate techniques to predict the composition of crude bio-oils obtained via the pyrolysis of lignocellulosic biomass is a prerequisite for their industrial implementation. Here, we demonstrate the potential of the Fourier Transform Infrared Spectroscopy to replace the gas chromatography-mass spectrometry (GC-MS) in determining the compositional groups of bio-oils. Using mid-infrared spectroscopic technique as predictor, chemometric tools based on partial least squares regression models were contrasted with GC-MS results to foresee the various families of organic compounds. A broad data set, consisting of more than one hundred samples obtained from the thermal and catalytic pyrolysis of woody biomass and from the upgrading of bio-oil vapors by catalytic cracking over zeolites and metal oxides was used. The applicability of the developed model was assessed by external validation using the Kennard-Stone algorithm, showing that more than 90 wt% of the bio-oil composition was accurately determined. These results pave the path for the on-line monitoring of the forthcoming manufacture system of second-generation biofuels through rapid and costeffective characterization of the pyrolysis bio-oils, thus enabling industrial producers to make timely decisions.
Versión del editorhttp://dx.doi.org/10.1021/acssuschemeng.7b01483
URIhttp://hdl.handle.net/10261/156659
DOI10.1021/acssuschemeng.7b01483
ISSN2168-0485
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