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Article

Extra-Heavy Crude Oil Viscosity Reduction Using and Reusing Magnetic Copper Ferrite Nanospheres

1
Facultad de Ciencias, Universidad de Ciencias Aplicadas y Ambientales U.D.C.A., Bogotá 111166, Colombia
2
Vicepresidencia de Exploración, ECOPETROL, Bogotá 110321, Colombia
3
Departamento de Química Inorgánica, Universidad de Granada, 18071 Granada, Spain
4
Departamento de Química Inorgánica y Orgánica, Universidad de Jaén, 23071 Jaén, Spain
5
Grupo de Investigación en Fenómenos de Superficie—Michael Polanyi, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín 050034, Colombia
*
Authors to whom correspondence should be addressed.
These two authors contributed in equal proportions.
Processes 2021, 9(1), 175; https://doi.org/10.3390/pr9010175
Received: 3 December 2020 / Revised: 13 January 2021 / Accepted: 15 January 2021 / Published: 19 January 2021
(This article belongs to the Special Issue Redesign Processes in the Age of the Fourth Industrial Revolution)
The main objective of this study is the synthesis, use, and reuse of magnetic copper ferrite nanospheres (CFNS) for extra-heavy oil viscosity reduction. The CFNS were synthesized using a solvothermal method resulting in mean particle size of 150 nm. Interactions of CFNS with the crude oil were evaluated through asphaltene adsorption isotherms, as well as static and dynamic rheology measurements for two cycles at 25 °C. Adsorption and desorption experiments corroborated that most of the asphaltenes adsorbed can be removed for nanoparticle reuse. During the rheology tests, nanoparticles were evaluated in the first cycle at different concentrations from 300 to 1500 mg/L, leading to the highest degree of viscosity reduction of 18% at 500 mg/L. SiO2 nanoparticles were evaluated for comparison issues, obtaining similar results regarding the viscosity reduction. After measurements, the CFNS were removed with a magnet, washed with toluene, and further dried for the second cycle of viscosity reduction. Rheology tests were performed for a second time at a fixed concentration of 500 mg/L, and slight differences were observed regarding the first cycle. Finally, changes in the extra-heavy oil microstructure upon CFNS addition were observed according to the significant decrease in elastic and viscous moduli. View Full-Text
Keywords: magnetic copper ferrite nanospheres; extra-heavy crude oil; viscosity reduction; nanomaterial reuse magnetic copper ferrite nanospheres; extra-heavy crude oil; viscosity reduction; nanomaterial reuse
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MDPI and ACS Style

Mateus, L.; Taborda, E.A.; Moreno-Castilla, C.; López-Ramón, M.V.; Franco, C.A.; Cortés, F.B. Extra-Heavy Crude Oil Viscosity Reduction Using and Reusing Magnetic Copper Ferrite Nanospheres. Processes 2021, 9, 175. https://doi.org/10.3390/pr9010175

AMA Style

Mateus L, Taborda EA, Moreno-Castilla C, López-Ramón MV, Franco CA, Cortés FB. Extra-Heavy Crude Oil Viscosity Reduction Using and Reusing Magnetic Copper Ferrite Nanospheres. Processes. 2021; 9(1):175. https://doi.org/10.3390/pr9010175

Chicago/Turabian Style

Mateus, Lucía, Esteban A. Taborda, Carlos Moreno-Castilla, María V. López-Ramón, Camilo A. Franco, and Farid B. Cortés 2021. "Extra-Heavy Crude Oil Viscosity Reduction Using and Reusing Magnetic Copper Ferrite Nanospheres" Processes 9, no. 1: 175. https://doi.org/10.3390/pr9010175

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