On naphthenic acids removal from crude oil and oil sands process-affected water

Wu, Chongchong; Visscher, Alex De; Gates, Ian D.

doi:10.1016/j.fuel.2019.05.091

Cited by 83 publications

(44 citation statements)

References 189 publications

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“…When investigating acidic oil from West Africa, most NAs were found in the light and intermediate fractions, while the latter fraction contained the NAs with the most surface activity [65]. NAs can also be found in PW in dissolved and dispersed forms, that is, as oil droplets [66].…”

Section: Naphthenic Acids (Nas)mentioning

confidence: 99%

Naphthenic Acids: Formation, Role in Emulsion Stability, and Recent Advances in Mass Spectrometry-Based Analytical Methods

Facanali

Porto

Crucello

et al. 2021

Journal of Analytical Methods in Chemistry

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Naphthenic acids (NAs) are compounds naturally present in most petroleum sources comprised of complex mixtures with a highly variable composition depending on their origin. Their occurrence in crude oil can cause severe corrosion problems and catalysts deactivation, decreasing oil quality and consequently impacting its productivity and economic value. NAs structures also allow them to behave as surfactants, causing the formation and stabilization of emulsions. In face of the ongoing challenge of treatment of water-in-oil (W/O) or oil-in-water (O/W) emulsions in the oil and gas industry, it is important to understand how NAs act in emulsified systems and which acids are present in the interface. Considering that, this review describes the properties of NAs, their role in the formation and stability of oil emulsions, and the modern analytical methods used for the qualitative analysis of such acids.

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Section: Naphthenic Acids (Nas)mentioning

confidence: 99%

Naphthenic Acids: Formation, Role in Emulsion Stability, and Recent Advances in Mass Spectrometry-Based Analytical Methods

Facanali

Porto

Crucello

et al. 2021

Journal of Analytical Methods in Chemistry

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“…Aliphatic and aromatic naphthenic acids are the principal small molecule contaminants in tailings ponds [25][26][27][28][29]. These agents are corrosive to all engineering equipment and highly toxic to aquatic life and potentially to humans if they reach high concentrations in rivers [30][31][32]. Naphthenic acids do not degrade easily by natural methods and accelerated oxidation using ozone or oxygen radical forming agents are only partially successful [30].…”

Section: Introductionmentioning

confidence: 99%

“…These agents are corrosive to all engineering equipment and highly toxic to aquatic life and potentially to humans if they reach high concentrations in rivers [30][31][32]. Naphthenic acids do not degrade easily by natural methods and accelerated oxidation using ozone or oxygen radical forming agents are only partially successful [30]. A variety of methods have been investigated for the removal of these chemicals with limited success [25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

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The Use of Surface-Modified Nanocrystalline Cellulose Integrated Membranes to Remove Drugs from Waste Water and as Polymers to Clean Oil Sands Tailings Ponds

et al. 2021

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There is an urgent environmental need to remediate waste water. In this study, the use of surface-modified nanocrystalline cellulose (CNC) to remove polluting drugs or chemicals from waste water and oil sands tailing ponds has been investigated. CNC was modified by either surface adsorbing cationic or hydrophobic species or by covalent methods and integrated into membrane water filters. The removal of either diclofenac or estradiol from water was studied. Similar non-covalently modified CNC materials were used to flocculate clays from water or to bind naphthenic acids which are contaminants in tailing ponds. Estradiol bound well to hydrophobically modified CNC membrane filter systems. Similarly, diclofenac (anionic drug) bound well to covalently cationically modified CNC membranes. Non-covalent modified CNC effectively flocculated clay particles in water and bound two naphthenic acid chemicals (negatively charged and hydrophobic). Modified CNC integrated into water filter membranes may remove drugs from waste or drinking water and contaminants from tailing ponds water. Furthermore, the ability of modified CNC to flocculate clays particles and bind naphthenic acids may allow for the addition of modified CNC directly to tailing ponds to remove both contaminants. CNC offers an environmentally friendly, easily transportable and disposable novel material for water remediation purposes.

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“…Recently, the problem of environmental pollution aroused by the diesel oil leakage gets more and more seriously. [1] Owing to great detriment of both the human health and the ecosystem, it is urgent to explore new techniques to tackle these issues. [2][3][4] Generally, traditional treatment methods for the environmental pollutants can be divided into three categories, including the physical cleaning, [5,6] chemical reaction [7] and biodegradation.…”

Section: Introductionmentioning

confidence: 99%

A Ternary Photocatalyst with Double Heterojunctionsfor Efficient Diesel Oil Degradation

et al. 2021

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The photodegradation is a potential technology to solve environmental issues such as the diesel oil pollution. The titanium dioxide/graphitic carbon nitride (TiO 2 /g-C 3 N 4 ) photocatalyst is widely used for the photodegradation of pollutants. However, the performances of this binary photocatalyst such as the degradation efficiency and cyclic stability are still unsatisfactory for real applications. In our work, we introduce a ptype NiO semiconductor into the binary TiO 2 /g-C 3 N 4 (98: 2) photocatalyst by a simple dipping method. The NiO semiconductor can form double heterojunctions with the TiO 2 and g-C 3 N 4 (dual Z-scheme and Z-scheme + p-n), which can accelerate the separation of photo-generated electron-hole pairs effectively. Thus, the as-obtained ternary TiO 2 /NiO/g-C 3 N 4 (TCN) sample delivers a good photocatalytic performance for diesel oil degradation under a simulated sunlight. Specifically, the TCN (7 : 3) photocatalyst exhibits a 98.94 % degradation efficiency after 2 h of visible-light, largely outperforming the single-component photocatalysts (TiO 2 , g-C 3 N 4 , NiO,) and the binary TiO 2 /g-C 3 N 4 (98 : 2) photocatalyst. The free radical capture test manifests that �O À 2 is the major factor on the degradation. This work presents a typical example to boost the photodegradation performance via a ternary catalyst design, which will provide valuable insight for the future high-performance diesel oil degradation.

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On naphthenic acids removal from crude oil and oil sands process-affected water

Cited by 83 publications

References 189 publications

Naphthenic Acids: Formation, Role in Emulsion Stability, and Recent Advances in Mass Spectrometry-Based Analytical Methods

Naphthenic Acids: Formation, Role in Emulsion Stability, and Recent Advances in Mass Spectrometry-Based Analytical Methods

The Use of Surface-Modified Nanocrystalline Cellulose Integrated Membranes to Remove Drugs from Waste Water and as Polymers to Clean Oil Sands Tailings Ponds

A Ternary Photocatalyst with Double Heterojunctionsfor Efficient Diesel Oil Degradation

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