Effect of asphaltene adsorption on the magnetic and magnetorheological properties of heavy crude oils and Fe3O4 nanoparticles systems

Contreras-Mateus, Maria; Sánchez, F.; Cañas-Martínez, Diana M.; Nassar, Nashaat N.; Chaves–Guerrero, Arlex

doi:10.1016/j.fuel.2022.123684

Cited by 9 publications

(8 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, an ideal adsorbent also takes part in the oxidation process in addition to the adsorption. Predominantly, d-block metal oxide nanoparticles, such as Fe 3 O 4 , are used in the adsorption of asphaltenes for its affinity toward various functional groups of asphaltenes . In addition to d block, recent investigations were carried out using S block and P block oxides such as MgO, CaO, SiO 2 , and Al 2 O 3 nanoparticles .…”

Section: Introductionmentioning

confidence: 99%

Cu-BDC and Cu₂O Derived from Cu-BDC for the Removal and Oxidation of Asphaltenes: A Comparative Study

et al. 2022

View full text Add to dashboard Cite

Asphaltenes have been associated with a number of problems in the petroleum industry with regard to the storage, exploration, and transportation of petroleum crude. In the current work, Copper-BenzeneDiCarboxylic acid (Cu-BDC) and Cu-BDC derived metal oxide has been used in the removal and oxidation of the asphaltenes. The MOF derived metal oxide was confirmed to be Cu 2 O. Though adsorption of asphaltenes followed a Langmuir adsorption isotherm in both cases, Cu-BDC was superior to Cu 2 O with an adsorption capacity four times that of the adsorption capacity of Cu 2 O. Also, the kinetic studies showed that the adsorption kinetics followed pseudo second order adsorption kinetics in both cases. From the oxidation studies, it was found that Cu-BDC was unstable beyond 350 °C and had no role in catalyzing the oxidation reaction. The Cu 2 O, however, was successful at catalyzing the asphaltene oxidation reaction and a reduction of 50 °C in oxidation temperature was observed. Hence comparing Cu-BDC with Cu 2 O, MOF was successful in the adsorption reaction but the MOF derived metal oxide had the upper hand in the oxidation reaction.

show abstract

Section: Introductionmentioning

confidence: 99%

Cu-BDC and Cu₂O Derived from Cu-BDC for the Removal and Oxidation of Asphaltenes: A Comparative Study

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Furthermore, the value of Δ S ° for the parent and iron‐exchanged bentonite was 0.8 and 13.5 J mol −1 k −1 , respectively. This big increment reveals the increased randomness at the solution interface during the fixation of asphaltene on the active sites of the adsorbent 22,29,30 …”

Section: Resultsmentioning

confidence: 99%

“…The asphaltene adsorption trend with concentration is similar for both parent and prepared iron‐exchanged bentonite However, the obtained initial slope and q e for prepared FeB are higher than the parent bentonite. The interaction of Fe x O y nanoparticles added to the bentonite enhanced the polar interaction with functional groups present in the asphaltene and subsequently increases the absorptivity 22 . Besides, the adsorption of the asphaltene on the surface of these adsorbents was studied using two types of isotherms.…”

Section: Resultsmentioning

confidence: 99%

Removal of asphaltene by solid‐phase iron exchanged bentonite

Jajin

Ghorbanpour

2022

Env Prog and Sustain Energy

View full text Add to dashboard Cite

The purpose of this study was to modify bentonite (B) by iron using the solid-phase ion exchange method to enhance the asphaltene adsorption. According to the scanning electron microscope (SEM) and x-ray diffraction analysis (XRD) results, after solid-state ion exchange, the structure of parent bentonite was changed slightly. An energy-dispersive x-ray analysis (EDX) showed that after ion exchange, the iron contents of bentonite increased from 0.6% to 1.6% w/w. Bentonite modification with iron increases asphaltene adsorption capacity (about 60%) compared to parent bentonite. Optimal adsorbent conditions for adsorption of asphaltene are 100 ppm concentration, 5 g/L adsorbent, and 60 min contact time. Adsorbent behavior showed that the adsorption kinetics and isotherm are in good agreement with the pseudosecond-order model and the Langmuir equation.

show abstract

“…In the magnetic complex, the fragmentation of aromatic organic molecules promoted by reactive oxygen species generated by Fe 3 O 4 destabilizes the free radicals in the derivatives that synergistically contribute to the propagation of molecular degradation of asphaltene components in lower molecular mass molecules. The use of magnetic nanoparticles has been studied for the adsorption and separation of asphaltenes. , …”

Section: Resultsmentioning

confidence: 99%

“…The use of magnetic nanoparticles has been studied for the adsorption and separation of asphaltenes. 45,46 Other authors have recently reported on using magnetic NP to separate asphaltenes from aqueous emulsions. Peng et al 47,48 for instance, developed magnetite NP coated with hydrophilic ethyl cellulose.…”

Section: ■ Introductionmentioning

confidence: 99%

Harvesting of Surfactant-Solubilized Asphaltenes by Magnetic Nanoparticles

et al. 2022

View full text Add to dashboard Cite

Asphaltenes are a severe problem for the oil industry. The high content of aromatic and aliphatic hydrocarbons in asphaltenes poses a challenge for efficient methods of the solubilization and degradation of their components. The main goal of this study was to investigate an efficient and innovative method for asphaltene solubilization with surfactants to produce supramolecular aggregates with affinity by magnetic nanoparticles (Fe 3 O 4 ) for magnetic separation and degradation. Asphaltene mixed with the cationic surfactant cetyltrimethylammonium bromide (CTAB) was both solubilized in chloroform and the solvent dried with N 2 to produce a film that was resuspended in water and formed a stable colloid with asphaltene incorporated in CTAB micelles. The suspensions of CTAB/asphaltene supramolecular aggregates obtained at different surfactant/asphaltene ratios were characterized by dynamic and static light scattering (DLS and SLS) and by electrophoretic mobility for ζ potential determination. CTAB concentrations of 30 and 60 mM produced spherical supramolecular aggregates (SMAs) of size between 100 and 200 nm with polydispersity. The ζ potential of CTAB micelles loaded with asphaltenes increased from +9.17 +/− 4.6 to +56.7 +/− 5.8 eV. Electron paramagnetic resonance revealed that asphaltene forms stable free radicals in CTAB micelles. Classical molecular dynamics simulations were also used to study interactions of the functional groups of asphaltenes. The association with CTAB micelles provided the binding affinity of asphaltenes for nanoparticulate magnetite (Fe 3 O 4 ) and precipitation of the most CTAB content. In this condition, Fe 3 O 4 promoted the degradation of asphaltenes to low molecular mass products. Therefore, incorporation in CTAB micelles is a simple and innovative method contributing to asphaltene removal, degradation, and possible conversion to products with aggregated value.

show abstract

Effect of asphaltene adsorption on the magnetic and magnetorheological properties of heavy crude oils and Fe3O4 nanoparticles systems

Cited by 9 publications

References 79 publications

Cu-BDC and Cu₂O Derived from Cu-BDC for the Removal and Oxidation of Asphaltenes: A Comparative Study

Cu-BDC and Cu₂O Derived from Cu-BDC for the Removal and Oxidation of Asphaltenes: A Comparative Study

Removal of asphaltene by solid‐phase iron exchanged bentonite

Harvesting of Surfactant-Solubilized Asphaltenes by Magnetic Nanoparticles

Contact Info

Product

Resources

About

Effect of asphaltene adsorption on the magnetic and magnetorheological properties of heavy crude oils and Fe3O4 nanoparticles systems

Cited by 9 publications

References 79 publications

Cu-BDC and Cu2O Derived from Cu-BDC for the Removal and Oxidation of Asphaltenes: A Comparative Study

Cu-BDC and Cu2O Derived from Cu-BDC for the Removal and Oxidation of Asphaltenes: A Comparative Study

Removal of asphaltene by solid‐phase iron exchanged bentonite

Harvesting of Surfactant-Solubilized Asphaltenes by Magnetic Nanoparticles

Contact Info

Product

Resources

About

Cu-BDC and Cu₂O Derived from Cu-BDC for the Removal and Oxidation of Asphaltenes: A Comparative Study

Cu-BDC and Cu₂O Derived from Cu-BDC for the Removal and Oxidation of Asphaltenes: A Comparative Study