Fourier Transform Infrared Spectroscopy (FTIR) and Multivariate Analysis for Identification of Different Vegetable Oils Used in Biodiesel Production

Mueller, Daniela; Ferrão, Marco Flôres; Marder, Luciano; Costa, Adilson Ben da; Schneider, Rosana de Cássia de Souza

doi:10.3390/s130404258

Cited by 47 publications

(47 citation statements)

References 21 publications

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“…For all the properties studied, the siPLS algorithm produced better models than the full-spectrum PLS, selecting the most important bands. Mueller et al [14] employed ATR-FTIR together with multivariate statistical analysis to identify vegetable oils used as raw material for biodiesel production. The vegetable oils canola, cotton, corn, palm, sunflower and soybean were used to produce biodiesel batches.…”

Section: Introductionmentioning

confidence: 99%

FTIR Analysis for Quantification of Fatty Acid Methyl Esters in Biodiesel Produced by Microwave-Assisted Transesterification

Rabelo¹,

Ferraz²,

Oliveira³

et al. 2015

IJESD

143

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Abstract-Biodiesel was produced by microwave-assisted transesterification of soybean oil with methanol as esterifying agent and sodium methoxide as catalyst. Fourier transform infrared spectroscopy was employed as a fast and reliable analytical technique for the quantification of fatty acid methyl ester content in the produced biodiesel. The quantification was done with the use of a partial least squares model developed based on the infrared spectra obtained. It was shown that microwave irradiation is capable of reducing the reaction time when compared to conventional mechanically stirred reactors used for biodiesel production. In addition, quantification of fatty acid methyl ester content in biodiesel by Fourier transform infrared spectroscopy coupled to multivariate statistics was demonstrated feasible.

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Section: Introductionmentioning

confidence: 99%

FTIR Analysis for Quantification of Fatty Acid Methyl Esters in Biodiesel Produced by Microwave-Assisted Transesterification

Rabelo¹,

Ferraz²,

Oliveira³

et al. 2015

IJESD

143

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“…Os resultados mostraram que é possível desenvolver uma metodologia confiável e rápida para identificar óleos vegetais utilizados como matéria-prima na produção de biodiesel por meio da aplicação destas técnicas não supervisionadas de análise multivariada aos dados de infravermelho médio. 12 Em outro trabalho de Veras et al foi utilizada a técnica de infravermelho próximo no qual foi obtido um total de 108 espectros de amostras de biodiesel, de quatro tipos de óleos provenientes de nove fabricantes diferentes: semente de algodão, de girassol, de soja e de canola. A classificação das amostras de biodiesel também foi possível a partir de modelos quimiométricos de HCA e PCA.…”

Section: Introductionunclassified

Exploratory Analysis Applied to Attenuated Total Reflectance Fourier Transform Infrared (Atr-Ftir) of Biodiesel/Diesel Blends

Ruschel¹,

Huang²,

Samios³

et al. 2014

Química Nova

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EXPLORATORY ANALYSIS APPLIED TO ATTENUATED TOTAL REFLECTANCE FOURIER TRANSFORM INFRARED (ATR-FTIR) OF BIODIESEL/DIESEL BLENDS. In this study, hierarchical cluster analysis (HCA) and principal component analysis (PCA) were used to classify blends produced from diesel S500 and different kinds of biodiesel produced by the TDSP methodology. The different kinds of biodiesel studied in this work were produced from three raw materials: soybean oil, waste cooking oil and hydrogenated vegetable oil. Methylic and ethylic routes were employed for the production of biodiesel. HCA and PCA were performed on the data from attenuated total reflectance Fourier transform infrared spectroscopy, showing the separation of the blends into groups according to biodiesel content present in the blends and to the kind of biodiesel used to form the mixtures.Keywords: HCA; PCA; diesel/biodiesel blends; exploratory analysis. INTRODUÇÃOO estudo de combustíveis alternativos aos derivados petroquí-micos tem recebido grande estímulo na última década no Brasil, especialmente com o desenvolvimento dos programas de incentivo a produção de novas matrizes energéticas, como é o caso do biodiesel adicionado ao óleo diesel mineral.A utilização do óleo diesel como combustível teve seu início amplamente reconhecido quando Rudolf Diesel patenteou o seu motor em 1892 e introduziu o primeiro motor diesel destinado a funcionar com óleo vegetal. Em 1900, ele abasteceu e utilizou o motor com óleo de amendoim por várias horas, com sucesso. Já em 1912, ele previu que, no futuro, o óleo vegetal poderia ser um combustível importante assim como o óleo diesel.1 Por razões tanto técnicas quanto econômicas, com o passar do tempo os óleos deram lugar ao diesel mineral.2 Na época, o baixo preço e a oferta abundante dos derivados de petróleo resultaram na escolha pelo diesel de petróleo. Em 1940, enormes reservatórios de petróleo foram encontrados, sua extração e refinamento foram relativamente fáceis e baratos. Em 1970, o monopólio de algumas nações e circunstâncias políticas geraram uma nova situação, o que obrigou os engenheiros e pesquisadores a desenvolver combustíveis alternativos e ambientalmente amigáveis. Desde então, há um interesse renovado na utilização de derivados de óleos vegetais em motores a diesel por várias razões, incluindo considerações políticas, preocupações ambientais e aspectos econômicos. Neste sentido, o biodiesel, que é constituído de uma mistura de alquil-ésteres de cadeia linear, é obtido pela reação de transesterificação dos triglicerídeos presentes em óleos e gorduras com álcoois de cadeia curta gerando como subproduto o glicerol. A importância do biodiesel como aditivo e até como possível substituinte do óleo diesel decorre do fato de que este biocombustível apresenta vantagens sobre o óleo diesel, pois é proveniente de fontes renováveis, não é tóxico e diminui as emissões de poluentes durante a sua combustão.4 O biodiesel produz cerca de 10% menos de energia que o diesel de petróleo, mas seu desempenho no motor é praticamente o mesmo em t...

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“…The infrared spectroscopic absorptions of C-O stretch of esters corresponding to two asymmetric vibrations of O-CO (aliphatic) within 1275 to 1185 cm -1 and O-R stretch at 1160 to 1055 cm -1 have been identified as very important in FT-IR analysis of oils (Mueller et al, 2013). These absorptions are part of a band in the fingerprint region in the FT-IR charts (Figures 1 to 5).…”

Section: Resultsmentioning

confidence: 99%

Effect of sonication at different ultrasonic frequencies on the quality and quantity of fatty acids of the oil of Chlorella vulgaris

Olubunmi¹

2017

Sci. Res. Essays

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In order to investigate the effect of sonication on the fatty acids of alga oil, oil of Chlorella vulgaris was extracted by sonication at 20, 40, 60 and 80 kHz. Oil extracted by refluxing alga cells in n-hexane was used as control. Probable changes in the structures of the fatty acids were investigated using gas chromatography and Fourier transform infrared spectroscopy (FT-IR). The retention profiles of the chromatograms were similar with differences observed only in peak heights. The FT-IR spectrum of the hexane extract was similar to the spectra of oil extracted at 20 and 40 kHz. The FT-IR spectra of oil extracted at 60 and 80 kHz were identical but different from the other spectra. Peaks at about 1560 cm -1 which were prominent in the 60 and 80 kHz spectra but absent from the other spectra were assigned to non-oil lipids such as steroids. It was concluded that extraction of oil from C. vulgaris by sonication at 20, 40, 60 and 80 kHz had no degradative effect on the structure of the fatty acids of C. vulgaris.

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Fourier Transform Infrared Spectroscopy (FTIR) and Multivariate Analysis for Identification of Different Vegetable Oils Used in Biodiesel Production

Cited by 47 publications

References 21 publications

FTIR Analysis for Quantification of Fatty Acid Methyl Esters in Biodiesel Produced by Microwave-Assisted Transesterification

FTIR Analysis for Quantification of Fatty Acid Methyl Esters in Biodiesel Produced by Microwave-Assisted Transesterification

Exploratory Analysis Applied to Attenuated Total Reflectance Fourier Transform Infrared (Atr-Ftir) of Biodiesel/Diesel Blends

Effect of sonication at different ultrasonic frequencies on the quality and quantity of fatty acids of the oil of Chlorella vulgaris

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