Crude oil emulsion breaking: An investigation about gravitational and rheological stability under demulsifiers action

Bahú, Juliana O.; Miranda, Nahieh Toscano; Khouri, Nadia Gagliardi; Batistella, César Benedito; Concha, Víktor Oswaldo Cárdenas; Maciel, Maria Regina Wolf; Schiavon, Maria Ingrid Rocha Barbosa; Filho, Rubens Maciel

doi:10.1016/j.petrol.2021.110089

Cited by 8 publications

(7 citation statements)

References 47 publications

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“…Levulinic acid is a short-chain fatty acid containing a ketone group and a carboxylic acid group [63][64][65]. Because of these two functional groups, levulinic acid becomes a potentially versatile building block for synthesizing various organic compounds (e.g., levulinate esters) and can be used to produce food flavor, tobacco flavor, and fuel additives.…”

Section: Levulinic Acidmentioning

confidence: 99%

High-Value Utilization of Corn Straw: From Waste to Wealth

Fu,

Zhang,

Guan

2023

Sustainability

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As a renewable lignocellulosic biomass resource, corn straw has great potential for waste utilization in agriculture and sustainable development. In recent years, considerable attention has been given to the research on repurposing organic acids, saccharides, and other active substances extracted from corn straw. This review is focused on the progress in the preparative techniques and product development of organic acids and saccharides, realizing the high-value utilization of corn straw. This review also discusses the potential applications of corn straw in the food and biopharmaceutical industries, and sheds light on the current challenges and future directions in the efficient utilization of straw resources.

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Section: Levulinic Acidmentioning

confidence: 99%

High-Value Utilization of Corn Straw: From Waste to Wealth

Fu,

Zhang,

Guan

2023

Sustainability

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“…Water-in-oil (W/O) emulsions are ubiquitous in oil exploitation and processing. − Water in oil causes serious harm, such as a reduction in the viscosity of lubricating oil, resulting in lubrication shortage; moreover, it causes equipment metal parts to rust, seriously shortening the service life of the equipment. − Therefore, it is necessary to remove the water present in the oil. However, water-in-oil emulsion usually has strong interface stability characteristics, causing dehydration problems. , Commonly used oil dehydration methods include gravity sedimentation, chemical demulsification, vacuum dehydration, centrifugal separation, and electric field dehydration. ,− However, these methods have many disadvantages, such as high energy consumption (electric field and vacuum dehydration), secondary pollution (chemical demulsification), and low efficiency (centrifugal separation and gravity sedimentation). − In recent years, media coalescence technology has attracted wide attention from domestic and foreign scholars owing to its advantages of high efficiency, being environmentally friendly, and low energy consumption …”

Section: Introductionmentioning

confidence: 99%

“… 9 , 10 Commonly used oil dehydration methods include gravity sedimentation, chemical demulsification, vacuum dehydration, centrifugal separation, and electric field dehydration. 2 , 11 − 14 However, these methods have many disadvantages, such as high energy consumption (electric field and vacuum dehydration), secondary pollution (chemical demulsification), and low efficiency (centrifugal separation and gravity sedimentation). 15 − 17 In recent years, media coalescence technology has attracted wide attention from domestic and foreign scholars owing to its advantages of high efficiency, being environmentally friendly, and low energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Microscopic Process of the Media Coalescence Treatment of Water-in-Oil Emulsion

Meng

Yang

2023

ACS Omega

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Medium coalescence technology is a research hotspot for the separation of oil-in-water emulsions. However, the coalescence mechanism is still unclear, making it challenging to effectively improve the separation performance. Herein, the microscopic mechanism of medium coalescence was revealed. We found that the effective collision positions under the action of the flow field include the exposed granule surface, adherent droplet surface, and three-phase contact line. Furthermore, a numerical model of the microscopic process of water-in-oil emulsion permeation through a granular bed was established. The effects of different parameters (including the number of medium layers, Reynolds number, and inlet concentration) on the microscopic process of capturing dispersed-phase droplets in the bed and the pressure drop in the coalescence area were studied. The numerical results show that the droplets form the bridging structure between the granules. On the one hand, the bridging structure promotes the capture of the droplets by the bed; on the other hand, it causes pressure-drop fluctuations in the coalescence area and asymmetric distribution of the velocity field.

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“…The implementation of tertiary oil recovery technologies, such as polymer flooding, has significantly enhanced the stability of crudeoil-produced fluid [1][2][3]. The improper treatment of oil-water emulsions may lead to elevated production costs, dimished quality of petroleum products, and severe ecological consequences that are difficult to predict [4,5]. Achieving efficient demulsification is an urgent problem for each oilfield due to the uncertainty and complexity of the composition of crude oil emulsions.…”

Section: Introductionmentioning

confidence: 99%

Fluorinated-Polyether-Grafted Graphene-Oxide Magnetic Composite Material for Oil–Water Separation

Liu,

Wei,

Jia

et al. 2023

AppliedChem

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In this study, a new type of highly efficient and recyclable magnetic-fluorine-containing polyether composite demulsifier (Fe3O4@G-F) was synthesized by the solvothermal method to solve the demulsification problem of oil–water emulsion. Fe3O4@G-F was successfully prepared by grafting fluorinated polyether onto Fe3O4 and graphene-oxide composites. Fe3O4@G-F was characterized using scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Taking the self-made crude-oil emulsion as the experimental object, the demulsification mechanism of the demulsifier and the influence of external factors, such as the temperature and pH value, on the demulsification performance of the demulsifier are discussed. The results show that the demulsification efficiency of the Fe3O4@G-F emulsion can reach 91.38% within 30 min at a demulsifier dosage of 750 mg/L, pH of 6, and a demulsification temperature of 60 °C. In neutral and acidic environments, the demulsification rate of the demulsifier is more than 90%. In addition, Fe3O4@G-F has been proven to have good magnetic effects. Under the action of an external magnetic field, Fe3O4@G-F can be recycled and reused in a two-phase system four times, and the demulsification efficiency is higher than 70%. This magnetic nanoparticle demulsifier has broad application prospects for various industrial and environmental processes in an energy-saving manner.

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Crude oil emulsion breaking: An investigation about gravitational and rheological stability under demulsifiers action

Cited by 8 publications

References 47 publications

High-Value Utilization of Corn Straw: From Waste to Wealth

High-Value Utilization of Corn Straw: From Waste to Wealth

Investigation of the Microscopic Process of the Media Coalescence Treatment of Water-in-Oil Emulsion

Fluorinated-Polyether-Grafted Graphene-Oxide Magnetic Composite Material for Oil–Water Separation

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