Extra-Heavy Crude Oil Viscosity Reduction Using and Reusing Magnetic Copper Ferrite Nanospheres
Metadatos
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MDPI
Materia
Magnetic copper ferrite nanospheres Extra-heavy crude oil Viscosity reduction Nanomaterial reuse
Date
2021Referencia bibliográfica
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
Patrocinador
Spanish Project ref. RTI2018-099,224-B-I00 from ERDF/Ministry of Science, Innovation and Universities; State Research Agency. M.V.L.-R; Junta de Andalucía, Spain, RNM-366 research groupRésumé
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.