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International Conference on Innovative Applied Energy    

E-Proceedings ISBN: 978-1-912532-05-6

St Cross College, University of Oxford, United Kingdom



Babassu as raw material to obtaining trimethylolpropyl ester with lubricant properties: characterization and
evaluation of the impact in physicochemical properties when added to naphtenic mineral lubricant



Francisco Eduardo Rodrigues (1), Nágila Maria Silva Ricardo (2), Tathilene Arruda (2), Rita De Cássia Bezerra (1), João Carlos Assunção (1), David Thomas Arruda (2), Francisco Murilo Luna (2) and Francisco Leonardo Martins (1)

1. Instituto Federal de Educação, Ciências e Tecnologia do, Ceará – Campus Caucaia, Ceará Brasil

2. Universidade Federal do Ceará – Campus do Pici, Fortaleza, Ceará, Brazil



Paper Abstract

As alternative to use petroleum and its derivatives, this research describes the use of babassu (Orbignya speciosa) as raw material to the production of biolubricant and its addition to naphtenic mineral lubricant (NH10) and in the best of our efforts in research, biolubricant based on babassu and its blend with mineral lubricants are reported for the first time. Inittialy, it was obtained babassu methyl biodiesel through insitu transesterification: in this methodology it was not necessary to extract the oil once the own botanic material is inserted in the reactor and eliminates the use of hexane as solvent making the process sustainable. The reactional condition employed was: 30% of methyl alcohol and 5% of sodium hydroxide as catalyst, both in relation of the botanic material mass. The system was kept under stirring at 60°C for three hours. After this time, the alcoholic phase was filtered, the excess of methyl alcohol was removed by evaporation under reduced pressure and the resultant biodiesel was washed with distilled water and dried in oven at 110 °C. The yield of biodiesel reaction was 82.9%. Then, the babassu biodiesel was transesterified using trimethylolpropane (TMP) as poliol: for this, it was utilized homogeneous basic catalysis in under reduced pressure.The reactional condition was: 1/4 TMP/biodiesel molar ratio and 1% w/w of sodium methoxide as catalyst. The bioproducts were characterized through chromatography gas coupled mass spectrometer (CG/MS), nuclear magnetic resonance of hydrogen (1H NMR) and thermogravimetric analysis (TG). CG/MS showed high content of saturated fatty acids (88.8% of saturated fatty acids). 1H NMR spectrum for the biodiesel showed a peak at 3.64 ppm and confirms the success of in situ transesterification. For the biolubricant, peaks at 4.23 and 4.06 ppm demonstrate the predominance of di- and triester in the sample. Physicochemical properties of babasu biodiesel as specific mass at 20 °C, kinematic viscosity at 40 °C and acid number were in accordance for biodiesel legislation. For the biolubricant, properties as kinematic viscosity at 40 °C and flash point were in accordance with the Brazilian legislation for naphtenic lubricant NH10. The index viscosity observed for the babassu biolubricant was in accordance with larger number of mineral lubricants found in the world market. Beyond this, the thermogravimetric analysis showed the excellent thermal stability of the biolubricant. After the characterization of the bioproducts, it was produced blends with 3, 5 and 10% v/v of babassu biolubricant added to mineral lubricant and physicochemical properties were evaluated. For the kinematic viscosity at 40 °C all the blends were in accordance with standard NH10. The flash point of the blends with 3 and 5% were in accordance with values stabished for NH10. But flow point was directly affected by the addition of babassu biolubricant in all proportions evaluated. With the exposed, researches about the use of biolubricant blended to mineral lubricants as observed to biodiesel added to mineral diesel make themselves necessary. 

Paper Keywords
Babassu, biolubricant, lubricant, trimethylolpropane.
Corresponding author Biography

Prof. Dr. Eduardo Arruda is research professor from Instituto Federal de Ciências Tecnologia do Ceará-Campus Caucaia, Brazil. He is graduate in chemistry by Federal University of Ceará. He has Master and Doctorate degree also from Federal University of Ceará. Prof. Dr. Eduardo Arruda has expertise in biodiesel and biolubricant synthesis using vegetables oils and discovery of new nature antioxidants for application in waste cooking oil biodiesel.

The International Conference on Innovative Applied Energy (IAPE’18)