A Raman spectroscopic approach to investigate the production of biodiesel from soybean oil using 1-alkyl-3-methylimidazolium ionic liquids with intermediate chain length

Abrahamsson, Johanna; Andreasson, Emil; Hansson, Niklas; Sandström, David; Wennberg, Ellinor; Maréchal, Manuel; Martinelli, Anna

doi:10.1016/j.apenergy.2015.04.123

Cited by 30 publications

(14 citation statements)

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“…Por tanto el método SERS se convierta en una herramienta nanofotónica para el análisis de los biocombustibles. El tipo de sustratos empleados en este análisis dan espectros Raman claros, con una relación señal/ruido favorable para el análisis de Biodiésel en diésel, contrario a las mediciones Raman reportadas por otros autores [30,22,23,30,32].…”

Section: Resultados Señales De Fotoluminiscencia Fluorescencia Fosfunclassified

“…La utilidad de esta técnica se debe principalmente a su sensibilidad para dar información sobre la identidad química o molecular [17][18][19], estados de carga [7,12], procesos en interfaces, orden estructural [7,[12][13][14][15][16][17][18][19][20]. Es por esto que la espectroscopia Raman proyecta un gran mercado para aplicaciones de análisis en medicina/ nanomedicina [18], tecnología de alimentos [20], industria química y petroquímica [20], industria de materiales [16,21], biocombustibles [7,9,22,23]. Pese al gran potencial, actualmente hay una necesidad de concebir sistemas de análisis Raman de fácil uso, económicos y portátiles [17].…”

Section: Introductionunclassified

“…Entre las técnicas espectroscópicas ópticas empleadas comúnmente para analizar biocombustibles se encuentran la absorción UV-vis y de infrarrojo [24][25][26][27]. Particularmente, una técnica óptica no invasiva que ha venido ganando una posición importante en el análisis de sustancias líquidas o sólidas es la espectroscopia Raman [16][17][18][19][20][21][22][23][28][29][30]. La que puede suministrar información química detallada sobre muestras de biocombustibles, y con esto la cantidad porcentual de la mezcla con diésel.…”

Section: Introductionunclassified

“…Además, el espectro Raman revela una gran cantidad de características i.e. huella digital molecular, bandas espectrales más detalladas, mayor resolución energética e identidad química o alteración del biocombustible [7,[22][23]30]. En especial en este trabajo se reporta un procedimiento novedoso para obtener espectros Raman de señal magnificada (SERS: Surface Enhanced Raman Spectroscopy) de muestras de biodiésel en diésel.…”

Section: Introductionunclassified

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Nanofotónica en el análisis de biocombustibles

Paez-Sierra

Cardona

2018

Ingeniare. Rev. chil. ing.

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RESUMENActualmente uno de los retos energéticos es la búsqueda de alternativas para suplir anticipadamente el futuro agotamiento del petróleo a nivel mundial, y que además sean favorables con el medio ambiente. En especial los biocombustibles se han convertido en una de las propuestas más favorables para cubrir las actuales demandas del petróleo. Los biocombustibles son producidos de organismos vivos o de subproductos metabólicos (orgánicos o de desechos alimentarios). En este artículo se presenta una aplicación particular de la nanofotónica en el marco de la interacción de la luz con la materia denominada espectroscopia Raman de señal magnificada. Como muestra de control se considera el biodiésel y su mezcla con diésel, la razón se debe a la necesidad de establecer métodos de análisis durante el proceso de producción que podrían servir como cuantificador del grado de integridad al ser mezclado con diesel.Palabras clave: Biocombustibles, biodiésel, SERS, espectroscopia Raman, nanofotónica, sensórica. ABSTRACT Currently one of the energetic challenges is to look for environmentally friendly alternatives that would fulfill in advance the future shortage of oil in the world. Especially, biofuels have turned into one of the most favorable proposals to overcome current demands of the oil. Biofuels are produced from living organisms or from metabolic by-products (organic or food waste products). In this paper a particular application of nanophotonics in the frame of the interaction between light and matter through SurfaceEnhanced Raman spectroscopy (SERS) is addressed. As a test prove aBiodiésel sample is considered, the reason relies on the necessity to establish analysis procedures either to be performed during the production or as a quantifying tool to probe integrity during the blending process with diesel.

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Section: Resultados Señales De Fotoluminiscencia Fluorescencia Fosfunclassified

Section: Introductionunclassified

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Nanofotónica en el análisis de biocombustibles

Paez-Sierra

Cardona

2018

Ingeniare. Rev. chil. ing.

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“…71 The advantages and disadvantages of characterization techniques that are used for biodiesel production are explained in Table 4 and graphically presented in Figure 3 . the transesterification reaction on the basis of the analysis of the characteristic C═O stretching vibration observed in the Raman spectral range of 1730 to 1750 cm −1 , indicating that both reaction yield and reaction rate were increased due to an increase in the chain length.…”

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Optimized production and advanced assessment of biodiesel: A review

et al. 2018

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Summary Biodiesel production is profitable only under special conditions. Technical challenges including methods to make the transesterification reaction more energy efficient and faster by using catalysts, controlling reaction conditions more efficiently in narrow range, or selection of appropriate feedstocks should be properly addressed to make biodiesel economical viable fuel. Cradle to grave assessment of biodiesel is provided in the present review article. Transesterification reaction variables that affect the purity and performance of biodiesel including quality of raw materials, molar ratio of alcohol to oil, type and concentration of used catalysts, concentration of free fatty acids, water content, temperature, and time required for the reaction are critically described to provide complete understanding and obtaining economical and optimal biodiesel yields. This article also provides a critical review of biodiesel properties such as density, viscosity, cetane number, cloud point, pour point, and flash point. The importance of analytical methods including gas chromatography, high‐performance liquid chromatography, nuclear magnetic resonance spectroscopy, infrared spectroscopy, and Raman spectroscopy is presented and highlighted here in a novel way. Finally, this review will provide complete understanding to readers about biodiesel.

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The use of alternative solvents in enzymatic biodiesel production: a review

Taher¹,

Al‐Zuhair

2016

Biofuels Bioprod Bioref

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Biodiesel produced from oil‐rich feedstocks is known as a green replacement for conventional petroleum diesel. Transesterification is the common method used for biodiesel production. The enzymatic biodiesel production, using lipases, has recently been receiving extensive attention, due to its advantages over conventional alkali catalyzed process. The lipases can work at mild operating conditions, thus requiring less energy, with the ability to catalyze both triglycerides and free fatty acids (FFAs) from different oil sources, requiring fewer post‐production steps.Among the process challenges that face this process is the inhibition of the lipase with excessive use of alcohols, resulting in a decrease in biodiesel yield. The use of organic solvents, as a reaction medium, becomes essential in this case. However, most organic solvents are toxic and volatile with harmful impacts on the environmental. In addition, with the use of volatile organic solvents, an additional unit is required to separate them from the products, for the purification of the product and recycling of the solvent. In this paper, the prospect of using alternative solvents, specifically supercritical carbon dioxide (SC‐CO2) and ionic liquids (ILs), in enzymatic biodiesel production is presented. The properties of these alternative solvents, their advantages over organic solvents, factors affecting lipases activity and stability in these solvents, and the challenges facing process commercialization are discussed. © 2016 Society of Chemical Industry and John Wiley & Sons, Ltd

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A Raman spectroscopic approach to investigate the production of biodiesel from soybean oil using 1-alkyl-3-methylimidazolium ionic liquids with intermediate chain length

Cited by 30 publications

References 44 publications

Nanofotónica en el análisis de biocombustibles

Nanofotónica en el análisis de biocombustibles

Optimized production and advanced assessment of biodiesel: A review

The use of alternative solvents in enzymatic biodiesel production: a review

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