Articles
Evaluation of Jatropha gossypiifolia oil as a asphaltenes stabilizer in a petroleum sample at the laboratory level
Published 2020-03-11
Keywords
- Asphaltenes,
- dispersion,
- stability,
- flocculation,
- Jatropha gossypiifolia
- crude oil ...More
How to Cite
Marín Velásquez, T. D. (2020). Evaluation of Jatropha gossypiifolia oil as a asphaltenes stabilizer in a petroleum sample at the laboratory level. Fuentes, El reventón energético, 18(1), 17–29. https://doi.org/10.18273/revfue.v18n1-2020003
Abstract
Asphaltenes are condensed polyaromatic solids that are present in oil forming colloidal suspensions in a thermodynamic system that in some cases tends to be unstable producing flocculation and aggregation. In the oil industry, dispersant chemical compounds are used to minimize the flocculation of asphaltenes, to avoid clogging problems in pipes and production equipment, which represents an important investment since they are formulated with synthetic resins and oils, in addition to expensive solvents. The research evaluates the use of Jatropha gossypifolia oil as an active stabilizing component of asphaltenes, mixed with diesel as a solvent in laboratory level tests. Five dilutions of oil in diesel (10 to 50%) were evaluated. The procedure consisted of observing the asphaltene aggregates under an optical microscope when applying n-heptane to a crude oil sample from Monagas State, Venezuela, the volume of n-heptane used being the flocculation onset. Successive volumes of each dilution were then applied until the dispersion of the aggregates was achieved, this volume being the point of dispersion. In addition, xylene was used as a standard dispersant to compare the performance of the dissolutions. The tests were performed at two temperatures of 25 and 40 ºC. A factorial statistical design was used with experimental factors dissolution and temperature and dependent variable instability index, with ANOVA analysis and Tukey HSD test with α = 0.05. With the application of the solutions, a greater dispersion of the aggregates was achieved, with efficiencies greater than 94% with respect to the dispersion obtained with xylene, being the solution with 40% oil the most efficient. The statistical results showed that stability is dependent on the solution used and independent of the test temperature with a 95% confidence level.
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References
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ASTM D445. (2011). Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity). West Conshohocken, PA: American Society for Testing and Materials.
ASTM D891. (2009). Standard Test Methods for Specific Gravity, Apparent, of Liquid Industrial Chemicals. West Conshohocken, PA: American Society for Testing and Materials
ASTM D2007. (2011). Standard Test Method for Characteristic Groups in Rubber Extender and Processing Oils and Other Petroleum-Derived Oils by the Clay-Gel Absorption Chromatographic Method. West Conshohocken, PA: American Society for Testing and Materials
ASTM D2196. (2010). Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational Viscometer. West Conshohocken, PA: American Society for Testing and Materials
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Campen, S., Moorhouse, S.J., & Wong, J.S.S. (2019). Mechanism of an asphaltene inhibitor in different depositing environments: Influence of colloid stability. Journal of Petroleum Science and Engineering, 106502. doi: 10.1016/j.petrol.2019.106502.
Carbognani, L., Méndez, A., & Sánchez, V. (1999). Caracterización de crudos venezolanos. Orígenes, razones y necesidades. Acta Científica Venezolana, 50(1), 11-17
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Cuffaro, K.A., & Centeno, L.P. (2017). Comparación de la eficiencia de los aceites de piñón (Jatropha curcas) e higuereta (Ricinus communis) como dispersantes de asfaltenos aplicados a un crudo mediano del norte de Monagas (tesis de pregrado). Universidad de Oriente, Venezuela.
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De Almeida, P.M., De Sousa, S., Marin-Morales, M.A., Benko-Iseppon, A.M., & Brasileiro-Vidal, A.C. (2015). Genotoxic potential of the latex from cotton-leaf physicnut (Jatropha gossypiifolia L.). Genetics and Molecular Biology, 38(1), 93-100
De Almeida, P.M., De Sousa, S.S., Santos, I.R.M.R., Marin-Morales, M.A., Benko-Iseppon, A.M., Santos, A.V., Randau, K.P., & Brasileiro-Vidal, A.C. (2016). Genotoxic potential of leaf extracts of Jatropha gossypiifolia L. Genetics and Molecular Research, 15(1), 1-9. doi: 10.4238/gmr.15017415
Falodun, A., Sheng-Xiang, Q., Parkinson, G., & Gibbons, S. (2012). Isolation and characterization of a new anticancer diterpenoid from Jatropha gossypifolia. Pharmaceutical Chemistry Journal, 45(10), 636-639. doi: 10.1007/s11094-012-0693-4
Félix-Silva, J., Giordani, R.B., Da Silva-Jr, A.A., Zucolotto, S.M., & Fernandes-Pedrosa, M. (2014). Jatropha gossypiifolia L. (Euphorbiaceae): A Review of Traditional Uses, Phytochemistry, Pharmacology, and Toxicology of This Medicinal Plant. Evidence-Based Complementary and Alternative Medicine, 1-32. doi: 10.1155/2014/369204.
Figueira, J. N., Simão, R. A., Soares, B. G., & Lucas, E. F. (2017). The influence of chemicals on asphaltenes precipitation: a comparison between atomic force microscopy and near infrared techniques. Revista Fuentes, 15(1), 7-17.
García, C. A., Rodríguez, O. C., Casallas, P. A., Cruz, G., Hernández, F. E., Afanador, L. E., & Rodríguez, L. (2010). Optimización del transporte por oleoducto de crudo pesado Castilla. Fuentes: El reventón energético, 8(1), 2.
Ghaffar, A.M.A., Kabel, K.I., Farag, R.K., Maysour, N.E., & Zahran, M.A.H. (2013). Synthesis of poly (dodecyl phenol formaldehyde)-b-poly (oxypropylene) block copolymer, and evaluation as asphaltene inhibitor and dispersant. Research on Chemical Intermediates, 41(1), 443-455. doi: 10.1007/s11164-013-1243-8
Goual, L. (2012). Petroleum Asphaltenes. USA: University of Wyoming
Hirschberg, A., Dejong, L.N.J., Shipper, B.A., Meijer, J.G. (1984). Influence of temperatura and pressure on asphaltene flocculation. Society of Petroleum Engineers Journal, 24(3), 283-293. doi: 10.2118/11202-pa
Hopkins, W. (2014). A new view of statistics. Recuperado de https://complementarytraining.net/free-will-hopkins-a-new-view-of-statistics-pdf-printout/
Hosamani, K.M., & Katagi, K.S. (2008). Characterization and structure elucidation of 12-hydroxyoctadec-cis-9-enoic acid in Jatropha gossypifolia and Hevea brasiliensis seed oils: a rich source of hydroxy fatty acid. Chemistry and Physics of Lipids, 152, 9-12
Islam, M., Islam, A., & Hossain, M.S. (2017). Biological Investigation of Jatropha gossypiifolia: A Stiff Medicinal Plant in Bangladesh. Iranian Journal of Pharmaceutical Sciences, 13(1), 35-48
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