Metal Ion Interactions with Crude Oil Components: Specificity of Ca2+ Binding to Naphthenic Acid at an Oil/Water Interface

Taylor, Spencer E.; Chu, Hiu Tung

doi:10.3390/colloids2030040

Cited by 21 publications

(22 citation statements)

References 101 publications

(112 reference statements)

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“…Sodium carboxylate soap emulsion formation is a saponification-style reaction between long-chain fatty acids and monovalent cations (Na + , K + ) in brine. The formation of solid calcium naphthenate soaps involves complexation-style 2:1 bidentate binding of large molecular weight tetraprotic acids (ARN) to Ca 2+ to give practically insoluble coordination compounds and can be interpreted within the framework of the crystallization theory (Taylor and Hiu 2018).…”

Section: Mechanistic Aspectsmentioning

confidence: 99%

“…Therefore, Mg 2+ has a lower tendency to complex with ARN and will barely participate in the formation of an interfacial film (Bertelli et al 2014). In contrast to the weakly soluble coordination compounds formed by Ca 2+ , Mg 2+ tends to form uncoordinated, water-soluble ionic species (Taylor and Hiu 2018). The solubility product of calcium naphthenate is much lower than that of magnesium naphthenate; thus, calcium naphthenate has a greater tendency to exists as a solid precipitate (Simon et al 2012).…”

Section: Calcium Naphthenate Soap Scalementioning

confidence: 99%

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Oilfield metal naphthenate formation and mitigation measures: a review

Eke

Victor-Oji

Akaranta

2019

J Petrol Explor Prod Technol

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Process facilities for the separation of hydrocarbons from produced water in the oilfield are critical to flow assurance, product quality and environmental compliance. The formation of metal naphthenates, which are emulsion stabilizers and equipment foulers, is deleterious to performance and integrity of these processes and facilities. Manual removal of deposits of these organic salts formed at the oil-water interface during separation processes is difficult and expensive; hence, the best operational option is inhibition. The conventional method for the inhibition of metal naphthenates, which relies on suppressing the deprotonation of naphthenic acids by common ion effect, is no longer tenable because it exacerbates internal corrosion problems in topside facilities. Current industry focus is on the development of effective surface active agents for inhibition of naphthenates. There are a plethora of chemical compounds with naphthenate inhibition potential such as sulphonates, phosphate esters, aminated phosphonates and sulphosuccinates, but compatibility issues make the choice of inhibitor a complicated process. In this paper, the drivers and mechanism of oilfield metal naphthenate formation are reviewed. Surfactants for oilfield metal naphthenate inhibition and the mechanisms of inhibition are highlighted with a view to process optimization.

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Section: Mechanistic Aspectsmentioning

confidence: 99%

Section: Calcium Naphthenate Soap Scalementioning

confidence: 99%

Oilfield metal naphthenate formation and mitigation measures: a review

Eke

Victor-Oji

Akaranta

2019

J Petrol Explor Prod Technol

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“…Tissue samples were collected from animal groups exposed to Norwegian oil in seawater and examined under the microscope and accumulation and toxicity studies of the two synthesized monoaromatic compounds showed morphological abnormalities in such beings, highlighting the dangerousness and spread of the oil in the system of living BEINGS (SØRENSEN et al, 2019). Also, there are many underlying factors responsible for the effects of crude oil and its induced abiotic stresses on the composition of stressed plants, which are poorly understood and require much study (ODUKOYA et al, 2019;OLARANONT et al, 2018;TAYLOR et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Oil spills: cases and consequences analysis

Goulart

Loebens

Farias

et al. 2020

RICA

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Oil spills are natural disasters that affect marine life, devastate ecosystems and different social series. They have a high risk of not only damaging the environment and human health, but also damaging the image of companies linked to these events. Thus, this article seeks to compile the main events in Brazil and the rest of the world to categorize their causes, impacts and social implications. And through a critical analysis to understand how such accidents could be avoided or better solved, bringing the most effective cleaning methods today. For this reason, it was clear that in many cases of spills, the actual damage generated is omitted to avoid public retaliation, but this only reinforces the need to disseminate the importance of environmental surveillance in the oil sector and to foster new technologies that seek alternative methods. decontamination of water bodies. In addition to making this subject increasingly present in society's daily lives, so that better working conditions and environmental care can be demanded.

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“…Metals can be dissolved in crude oils by formation of complexes with indigenous NA [10]. Being a source of contamination, these metal naphthenates will significantly affect the crude oil quality.…”

Section: Introductionmentioning

confidence: 99%

Amino-functionalized iron oxide nanoparticles designed for adsorption of naphthenic acids

Simonsen

Strand

Norrman

et al. 2019

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Amino-functionalized silica-coated iron oxide (Fe3O4/SiO2 NH2/C18) magnetic nanoparticles were synthesized, and the amino-surface modification was performed by two different methods, a highpressure autoclave and reflux experiments. The nanoparticles were tested for their ability to remove naphthenic acids from a model crude oil solution and for their magnetic separation properties. Grafting degrees onto the nanoparticle surfaces of 3-aminopropyltrimethoxysilane (APTMS) and n-octadecyltriethoxysilane (ODS) were calculated based on elemental analysis and specific surface area of the nanoparticles was measured by the Brunauer, Emmett and Teller (BET) method. Presence of a core-shell structure of separate nanoparticles as well as nanoparticle agglomerates was confirmed by the use of transmission electron microscopy (TEM) imaging.Average nanoparticle size and coating thickness were calculated based on a TEM size distribution analysis. The two amino-functionalization methods revealed similar results for the adsorption of 4-heptylbenzoic acid (HBA) dissolved in octane, and 2.7 times higher adsorption capacity compared to the unmodified silica-coated (Fe3O4/SiO2) nanoparticles.

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Metal Ion Interactions with Crude Oil Components: Specificity of Ca2+ Binding to Naphthenic Acid at an Oil/Water Interface

Cited by 21 publications

References 101 publications

Oilfield metal naphthenate formation and mitigation measures: a review

Oilfield metal naphthenate formation and mitigation measures: a review

Oil spills: cases and consequences analysis

Amino-functionalized iron oxide nanoparticles designed for adsorption of naphthenic acids

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