Investigation of water separation from water-in-oil emulsion using electric field

Kwon, Woo-Taeg; Park, Kunyik; Han, Sam Duck; Yoon, Sung Min; Kim, Joo Yeon; Bae, Wisup; Rhee, Young Woo

doi:10.1016/j.jiec.2010.07.018

Cited by 78 publications

(33 citation statements)

References 13 publications

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“…The motivation behind the study of electric fields is due to the fact that numerous advantages can be attributed to them when breaking W/O emulsions: reduction in the charge in chemicals, apparatus simplicity, high yields, etc. (Kwon et al 2010). The action mechanism is attributed to the perturbation of electrostatic interaction within the emulsion, yielding an accelerated coalescence of water droplets (Eow et al 2001).…”

Section: Methodsmentioning

confidence: 99%

Role of the porphyrins and demulsifiers in the aggregation process of asphaltenes at water/oil interfaces under desalting conditions: a molecular dynamics study

et al. 2020

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Breaking water-in-oil emulsions during the refining of crude oils is an important step before any upgrading process is started. Asphaltene molecules are incriminated as playing an important role in this phenomenon. Unraveling the mechanisms behind the affinity between them and water is a key step to understand how to break these emulsions more easily and require lower amounts of demulsifiers. Choosing which demulsifier molecule(s) to use is also primordial, but to do so rationally, one needs to know which are the molecular interactions in place between asphaltenes, porphyrins and water so that demulsifiers are chosen to destabilize a specific physical-chemical interaction. In this paper, we study the interactions arising between asphaltenes and porphyrins and six different molecules potentially displaying a demulsification action in the presence of water/oil interfaces. We demonstrate that the ionic demulsifier molecules present an interesting potential to either interact strongly with water, replacing asphaltenes in this interaction, or to interact with the active sites of asphaltenes, deactivating them and avoiding any asphaltenic interfacial activity. Finally, we also found that although asphaltenes do not migrate spontaneously toward the water/oil interfaces, porphyrins do so rather easily. This indicates that porphyrins do have an important activity at the water/oil interface.

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Section: Methodsmentioning

confidence: 99%

Role of the porphyrins and demulsifiers in the aggregation process of asphaltenes at water/oil interfaces under desalting conditions: a molecular dynamics study

et al. 2020

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“…Since oil spill accidents, as well as oil pollution from industrial and restaurant wastewater, happened frequently [1][2][3][4], the separation of oily wastewater has been noticed worldwide due to the environmental issue. Current oilwater separation technologies such as mechanical separation, oil adsorption, filtration, air flotation and coagulation [5][6][7][8][9][10] could treat some accidents and pollutants; however, these technologies were usually inefficient and have high operating cost [11]. Gravity-driven membrane technology is regarded as a potential filtration for oil-water separation due to its low cost, energy-sufficient, and chemical-free process, but its low permeate flux would be the major limitations to utilization [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Preparation of poly[3-(methacryloylamino) propyl] trimethylammonium chloride coated mesh for oil–water separation

Wu¹,

Huang²,

Tsai³

2019

Desalination and Water Treatment

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This study aims to prepare a polymer-coated mesh which could achieve good oil-water separation efficiency with an antibacterial property. These polymers were synthesized by the polymerization process of [3-(methacryloylamino) propyl] trimethylammonium chloride (MAPTAC). The hydrolysis resistance and the swelling ratio of the polymers were also examined in order to choose a suitable oil-water separation material. The prepared meshes showed not only high oil-water separation efficiency (>99%) with high permeate flux (up to 4,308 L h-1 m-2), but also a good antibacterial property. In addition, the oil-water separation efficiencies exceed 99% even under various severe conditions, such as acidic (1 M HCl), alkaline (1 M NaOH), and salty (8 wt.% NaCl) solutions. The excellent durability of the polymer-coated mesh shows the fact that it is a facile and promising filtration mesh for oil-water separation.

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“…During the past decade, several methods have been used for oil and water mixtures separation, such as ultrasonic separation, electrospinning techniques, gravity separation, air flotation, electric field separation, membrane filtration, filtrating system, oil absorption, and so on. However, previously mentioned methods had many problems and limitations such as low efficiency, high cost and the membrane‐fouling problem .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of durable superhydrophobic nanofibrous filters for oil‐water separation using three novel modified nanoparticles (ZnO‐NSPO, AlOO‐NSPO, and TiO₂‐NSPO)

Rostami

Pirsaheb

Moradi

et al. 2019

Polymers for Advanced Techs

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Three reusable and durable superhydrophobic nanofibrous filters were prepared by dip coating the nanofibrous fabric in the three different dispersed solutions of the newly modified nanoparticles (ZnO-NSPO, AlOO-NSPO, and titanium dioxide [TiO 2 ]-NSPO). The contact angle results proved that the TiO 2 -NSPO coated nanofibrous polyacrylonitrile (PAN) filter was hydrophobic with the water contact angle (WCA) of 141 while the ZnO-NSPO and AlOO-NSPO coated nanofibrous PAN filters were superhydrophobic with the WCA of 168 and 152 , respectively. The as-prepared filters can be utilized as an effective martial for oil-water separation with separation efficiency of over 98%.

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Investigation of water separation from water-in-oil emulsion using electric field

Cited by 78 publications

References 13 publications

Role of the porphyrins and demulsifiers in the aggregation process of asphaltenes at water/oil interfaces under desalting conditions: a molecular dynamics study

Role of the porphyrins and demulsifiers in the aggregation process of asphaltenes at water/oil interfaces under desalting conditions: a molecular dynamics study

Preparation of poly[3-(methacryloylamino) propyl] trimethylammonium chloride coated mesh for oil–water separation

Fabrication of durable superhydrophobic nanofibrous filters for oil‐water separation using three novel modified nanoparticles (ZnO‐NSPO, AlOO‐NSPO, and TiO₂‐NSPO)

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Investigation of water separation from water-in-oil emulsion using electric field

Cited by 78 publications

References 13 publications

Role of the porphyrins and demulsifiers in the aggregation process of asphaltenes at water/oil interfaces under desalting conditions: a molecular dynamics study

Role of the porphyrins and demulsifiers in the aggregation process of asphaltenes at water/oil interfaces under desalting conditions: a molecular dynamics study

Preparation of poly[3-(methacryloylamino) propyl] trimethylammonium chloride coated mesh for oil–water separation

Fabrication of durable superhydrophobic nanofibrous filters for oil‐water separation using three novel modified nanoparticles (ZnO‐NSPO, AlOO‐NSPO, and TiO2‐NSPO)

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Fabrication of durable superhydrophobic nanofibrous filters for oil‐water separation using three novel modified nanoparticles (ZnO‐NSPO, AlOO‐NSPO, and TiO₂‐NSPO)