Thermal degradation of ethanolic biodiesel: Physicochemical and thermal properties evaluation

The aim of this paper was to study the thermal degradation of soybean biodiesel attained by ethanolic route. The soybean biodiesel samples were subjected to heating treatment at 150 °C for 24 h in a closed oven under controlled atmosphere. During the experiments, samples were withdrawn at intervals of 3, 6, 9, 12, 15 and 24 h for physicochemical and thermophysical properties analysis. The biodiesel degradation was validated by Thermogravimetric analysis since their profiles for control and treated biodiesel were different. Also, 1H NMR confirmed this result due to a significant reduction at the signals related to the 1H located near to the double bonds in the unsaturated ethyl esters in agreement with an iodine index reduction and viscosity increase observed during degradation. Nevertheless, degraded biodiesel, under study conditions, preserved its thermophysical properties. These results may be relevant to qualify the produced biodiesel quality and collect physicochemical and thermophysical data important for applications in combustion studies including project of fuel injection systems.

[1]  Gerhard Knothe,et al.  Biodiesel and renewable diesel: A comparison , 2010 .

[2]  É. Castanheira,et al.  Environmental sustainability of biodiesel in Brazil. , 2014 .

[3]  Marcos Pereira Estellita Lins,et al.  Sustainability analysis of biodiesel production: A review on different resources in Brazil , 2013 .

[4]  Dong Jiang,et al.  Assessment of the biomass energy potentials and environmental benefits of Jatropha curcas L. in Southwest China , 2013 .

[5]  G. González-García,et al.  Thermogravimetric analysis as a rapid and simple method to determine the degradation degree of soy biodiesel , 2015 .

[6]  Avanish K. Tiwari,et al.  The effect of binary antioxidant proportions on antioxidant synergy and oxidation stability of Jatropha and Karanja biodiesels. , 2015 .

[7]  R. Gómez,et al.  Advances in the transesterification of triglycerides to biodiesel using MgO–NaOH, MgO–KOH and MgO–CeO2 as solid basic catalysts , 2013 .

[8]  S. Turn,et al.  Storage and oxidation stabilities of biodiesel derived from waste cooking oil , 2016 .

[9]  Jeferson Borghetti Soares,et al.  Energy in Brazil: Toward sustainable development? , 2008 .

[10]  Christian J. R. Coronado,et al.  Glycerol: Production, consumption, prices, characterization and new trends in combustion , 2013 .

[11]  L. Tavlarides,et al.  Effect of thermal decomposition on biodiesel viscosity and cold flow property , 2014 .

[12]  Alexandre Szklo,et al.  The vulnerability of renewable energy to climate change in Brazil , 2009 .

[13]  Alexandre Bevilacqua Leoneti,et al.  Glycerol as a by-product of biodiesel production in Brazil: alternatives for the use of unrefined glycerol. , 2012 .

[14]  A. K. Barros,et al.  Evaluation of the oxidative stability of corn biodiesel , 2011 .

[15]  Evans Kituyi,et al.  Greenhouse gas emissions and energy balances of jatropha biodiesel as an alternative fuel in Tanzania , 2013 .

[16]  M. Sthel,et al.  Thermal properties measurements in biodiesel oils using photothermal techniques , 2005 .

[17]  L. Tavlarides,et al.  Mechanism and kinetics of thermal decomposition of biodiesel fuel , 2013 .

[18]  V. B. Borugadda,et al.  Thermal, oxidative and low temperature properties of methyl esters prepared from oils of different fatty acids composition: A comparative study , 2014 .

[19]  Mazlan Abdul Wahid,et al.  The scenario of greenhouse gases reduction in Malaysia , 2013 .

[20]  Haji Hassan Masjuki,et al.  Study of the Effect of Storage Time on the Oxidation and Thermal Stability of Various Biodiesels and Their Blends , 2014 .

[21]  Breda Kegl,et al.  The influence of biodiesel fuel on injection characteristics, diesel engine performance, and emission formation , 2013 .

[22]  Chun-mei Lu,et al.  Comparative evaluation of thermal degradation for biodiesels derived from various feedstocks through transesterification , 2015 .

[23]  James Pullen,et al.  Experimental study of the factors affecting the oxidation stability of biodiesel FAME fuels , 2014 .

[24]  Kadir Aydin,et al.  Diesel engine emissions and performance from blends of citrus sinensis biodiesel and diesel fuel , 2014 .

[25]  C. Geankoplis.  Transport processes and unit operations , 1978 .

[26]  N. Kyriakidis,et al.  Calculation of iodine value from measurements of fatty acid methyl esters of some oils: Comparison with the relevant American Oil Chemists Society method , 2000 .

[27]  A. G. Souza,et al.  Thermal and kinetic evaluation of cotton oil biodiesel , 2007 .

[28]  Muhammad Ayoub,et al.  Critical review on the current scenario and significance of crude glycerol resulting from biodiesel industry towards more sustainable renewable energy industry , 2012 .

[29]  Y. Ortega,et al.  Kinetic study by 1H nuclear magnetic resonance spectroscopy for biodiesel production from castor oil , 2011 .

[30]  Alp Tekin Ergenç,et al.  Effects of soybean biodiesel on a DI diesel engine performance, emission and combustion characteristics , 2014 .

[31]  Soosan Rowshanzamir,et al.  Castor oil transesterification reaction: A kinetic study and optimization of parameters , 2010 .

[32]  L. Tavlarides,et al.  Thermal decomposition of ethanol-based biodiesel: Mechanism, kinetics, and effect on viscosity and cold flow property , 2016 .

[33]  Unconventional characterization of biodiesel from several sources by thermal lens spectroscopy to determine thermal diffusivity: Phenomenological correlation among their physicochemical and rheological properties , 2014 .

[34]  Younis Jamal,et al.  Production of biodiesel: A technical review , 2011 .

[35]  P. Furlan,et al.  Investigating the Oxidation of Biodiesel From Used Vegetable Oil by FTIR Spectroscopy: Used Vegetable Oil Biodiesel Oxidation Study by FTIR , 2010 .

[36]  I. M. Atadashi,et al.  Biodiesel separation and purification: A review , 2011 .

[37]  D. Grewell,et al.  Thermogravimetric Quantification of Biodiesel Produced via Alkali Catalyzed Transesterification of Soybean oil , 2009 .

[38]  M. Misra,et al.  Characterization and Application in Biocomposites of Residual Microalgal Biomass Generated in Third Generation Biodiesel , 2013, Journal of Polymers and the Environment.

[39]  G. Lalchand,et al.  A review on sustainable power generation in Malaysia to 2030: Historical perspective, current assessment, and future strategies , 2014 .

[40]  Simone P. Souza,et al.  Environmental benefits of the integrated production of ethanol and biodiesel , 2013 .

[41]  Jürgen Krahl,et al.  The Biodiesel Handbook , 2005 .

[42]  L. Knight,et al.  Laser-induced thermal lens effect: a new theoretical model. , 1982, Applied optics.

[43]  M. Sharma,et al.  Correlation development between the oxidation and thermal stability of biodiesel , 2012 .

[44]  Youngguk Seo,et al.  Estimation of greenhouse gas emissions from road traffic: A case study in Korea , 2013 .

[45]  E. Rajasekar,et al.  Review of combustion characteristics of CI engines fueled with biodiesel , 2014 .

[46]  G. Knothe.  Analysis of oxidized biodiesel by 1H‐NMR and effect of contact area with air , 2006 .

[47]  S. Hoekman,et al.  Review of biodiesel composition, properties, and specifications , 2012 .

[48]  Carlos Rodrigues Pereira Belchior,et al.  Exhaust emissions from a diesel power generator fuelled by waste cooking oil biodiesel. , 2012, The Science of the total environment.

[49]  Thiago Oliveira Rodrigues,et al.  Sustainability of the Biorefinery Industry for Fuel Production , 2013 .

[50]  V. Ortiz-Martínez,et al.  Analysis of optimal conditions for biodiesel production from Jatropha oil in supercritical methanol: Quantification of thermal decomposition degree and analysis of FAMEs , 2016 .

[51]  A. M. Mansanares,et al.  Thermal Properties of Biodiesel and Their Corresponding Precursor Vegetable Oils Obtained by Photopyroelectric Methodology , 2012 .

[52]  Jun Shen,et al.  A radial finite model of thermal lens spectrometry and the influence of sample radius upon the validity of the radial infinite model , 1993 .

[53]  A. S. Araujo,et al.  Kinetic study and thermoxidative degradation of palm oil and biodiesel , 2014 .