Magnetic demulsification of diluted crude oil-in-water nanoemulsions using oleic acid-coated magnetite nanoparticles

Liang, Jiling; Du, Na; Song, Shue; Hou, Wanguo

doi:10.1016/j.colsurfa.2014.11.050

Cited by 132 publications

(61 citation statements)

References 28 publications

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“…Variation in the concentration of these polymeric demulsifiers has often resulted in different degrees of demulsification efficiency, with the highest demulsification efficiency of 97.5% recorded within 45 min of the demulsification process using a polyester-based demulsifier. Similarly, magnetic-based chemical demulsifiers, such as magnetic graphene oxide, Janus magnetic submicron particles, oleic acid-coated magnetite nanoparticles, and alginate, have been proven to have a high demulsification efficiency in the range of 95-99.98% [89,106,107]. Ali et al [108] revealed that the use of a Janus submicron magnetic particle demulsifier at a concentration of 600 ppm and temperature of 60 • C yielded more than a 95% efficiency during demulsification of a water-in-oil emulsion within 2 h of processing.…”

Section: Chemical Demulsificationmentioning

confidence: 99%

An Overview of Recent Advances in State-of-the-Art Techniques in the Demulsification of Crude Oil Emulsions

et al. 2019

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The processing of crude oil often requires the extraction of a large amount of water. Frequently, crude oil is mixed with water to form water-in-crude oil emulsions as the result of factors such as high shear at the production wellhead and surface-active substances that are naturally present in crude oil. These emulsions are undesirable and require demulsification to remove the dispersed water and associated inorganic salts in order to meet production and transportation specifications. Additionally, the demulsification of these crude oil emulsions mitigates corrosion and catalyst poisoning and invariably maximizes the overall profitability of crude oil production. Recently, there has been growing research interest in developing workable solutions to the difficulties associated with transporting and refining crude oil emulsions and the restrictions on produced water discharge. Therefore, this paper reviews the recent research efforts on state-of-the-art demulsification techniques. First, an overview of crude oil emulsion types, formation, and stability is presented. Then, the parameters and mechanisms of emulsification formation and different demulsification techniques are extensively examined. It is worth noting that the efficiency of each of these techniques is dependent on the operating parameters and their interplay. Moreover, a more effective demulsification process could be attained by leveraging synergistic effects by combining one or more of these techniques. Finally, this literature review then culminates with propositions for future research. Therefore, the findings of this study can help for a better understanding of the formation and mechanisms of the various demulsification methods of crude oil to work on the development of green demulsifiers by different sources.

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Section: Chemical Demulsificationmentioning

confidence: 99%

An Overview of Recent Advances in State-of-the-Art Techniques in the Demulsification of Crude Oil Emulsions

et al. 2019

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“…Then, the relatively low boiling fraction of the mixture was distilled off by heating the resulting mixture at 105 ± 2 °C under the ambient pressure for 1 h. The residue was neutralized by NaOH solution until pH = 7.0-7.5. The obtained products (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14), which were viscous brown liquid with a specific odor, were called as demulsifiers hereinafter in this paper. The chemical composition of all the 14 demulsifiers was determined by high-performance liquid chromatography (see Tables 2 and 3).…”

Section: Obtaining Demulsifiersmentioning

confidence: 99%

“…Demulsifiers are reagents from several chemical substances (surfactants, modifiers, and solvents), developed based on the properties and components of the emulsion being separated. Thousands of patents and papers are devoted to using chemical substances and compositions for the destabilization of water-in-oil emulsion in petroleum industry [1,[5][6][7][8][9][10][11][12][13][14][15].…”

Section: ■ Introductionmentioning

confidence: 99%

New Potential Demulsifiers Obtained by Processing Gossypol Resin

et al. 2019

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Water contained in crude oil, forms so-called water-in-oil emulsions, the presence of which negatively affects the transportation and processing of oil. Demulsifiers are the special mixtures that are used to remove water from emulsions. The present paper is devoted to obtaining the demulsifiers by catalytic acid esterification of fatty acids mixture extracted from gossypol resin with isopropanol. Fourteen mixtures, containing mainly fatty acids and their ethers, were obtained and tested for demulsifying performance by using the bottle test. The relationship of the following values with the demulsibility of final mixtures was determined: the conditions of fatty acids esterification, the content of fatty acids in the demulsifier, the relative solubility number of the demulsifier, the toluene/water dynamic interfacial tension. The following conditions of fatty acids mixture esterification provided 64.8% of water removal at the dosage of 20 ppm of demulsifier: 385 K; 4 h; H2SO4/fatty acids mixture ratio 2.5 wt.%.

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“…Recently, magnetic demulsifiers have attracted much attention, due to their low cytotoxicity, good biocompatibility, interfacial activity provided by functionalized materials, and rapid response under the magnetic field. [14][15][16][17][18][19][20][21] Magnetic demulsifiers can migrate to the O/W interface, imparting magnetic properties on the dispersed oil droplets, which makes the magnetic nanoparticle-oil droplet complex easily isolated from the continuous water phase upon the application of a magnetic field. Another important feature of magnetic demulsifiers is that they can be collected, recovered by solvent washing, and recycled for the subsequent cycles.…”

Section: Introductionmentioning

confidence: 99%

Recyclable amine-functionalized magnetic nanoparticles for efficient demulsification of crude oil-in-water emulsions

Wang

Puerto

Warudkar

et al. 2018

Environ. Sci.: Water Res. Technol.

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Magnetic demulsification of diluted crude oil-in-water nanoemulsions using oleic acid-coated magnetite nanoparticles

Cited by 132 publications

References 28 publications

An Overview of Recent Advances in State-of-the-Art Techniques in the Demulsification of Crude Oil Emulsions

An Overview of Recent Advances in State-of-the-Art Techniques in the Demulsification of Crude Oil Emulsions

New Potential Demulsifiers Obtained by Processing Gossypol Resin

Recyclable amine-functionalized magnetic nanoparticles for efficient demulsification of crude oil-in-water emulsions

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