Flow of deep eutectic solvent-simulated fuel in circular channels: Part II—Extraction of dibenzothiophene

Ani, Zainab Al; Al-Wahaibi, Talal; Mjalli, Farouq S.; Al-Hashmi, A.R.; Abu-Jdayil, Basim

doi:10.1016/j.cherd.2017.01.003

Cited by 21 publications

(11 citation statements)

References 15 publications

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“…Experimental studies on the measurement of K L a in micro-channels for different diameters (in the range of 200 to 1000 μm) have been carried out by researchers for non-reacting systems [15,[28][29][30][31][32][33][34][35][36][37][38] as well as reacting systems. [7,29,[39][40][41] The reacting system of alkaline hydrolysis is the most widely used system, being instantaneous and mass transfer controlled for studies on mass transfer with reaction.…”

Section: Mass Transfer In Lle In Micro-channels and Effects Of Variou...mentioning

confidence: 99%

“…[7,29,[39][40][41] The reacting system of alkaline hydrolysis is the most widely used system, being instantaneous and mass transfer controlled for studies on mass transfer with reaction. Several studies [34][35][36][37][38][42][43][44] have also been carried out for the extraction of rare earths, and these are discussed in a later section. In the subsequent subsections, the effect of shape and size of micro-channels and operating parameters (flow ratio) on K L a has been discussed.…”

Section: Mass Transfer In Lle In Micro-channels and Effects Of Variou...mentioning

confidence: 99%

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Transport phenomena in microchannels in liquid–liquid extraction (LLE) systems operating in a slug flow regime—A review

2023

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In the present work, the effects of various parameters (capillary size, shape, flow ratio, presence of additives, and presence of wall film) on both reactive and non‐reactive LLE systems are presented and analyzed. The literature data for a constant liquid flow ratio of 1 (Qc/QD = 1) has been correlated to give rise to two empirical correlations relating the Sherwood number (Sh), Reynolds number (Re), capillary number (Ca), and Schmidt number (Sc) have been developed for 0.1 < Re < 10 and 10 < Re < 200. The concept of j‐factor for micro‐channels has been introduced and named as Pandit–Kunzru–Ganguli analogy. Three new dimensionless numbers have been introduced, namely Pandit number (), Ganguli number , and Kunzru number (). The j‐factor is found to be a strong function of Capillary number for 10 < Re < 200 while it is a strong function of surface renewal for 0.1 < Re < 10. Empirical correlations to calculate j‐factor as a function of Re or Weber number (We) are also presented. Recommendations for future work have been presented based on the review in the present work.

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Section: Mass Transfer In Lle In Micro-channels and Effects Of Variou...mentioning

confidence: 99%

Section: Mass Transfer In Lle In Micro-channels and Effects Of Variou...mentioning

confidence: 99%

Transport phenomena in microchannels in liquid–liquid extraction (LLE) systems operating in a slug flow regime—A review

2023

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“…Table reports different studies of the desulfurization process using microchannels. Al Ani et al , investigated the EDS process and its flow pattern in a microchannel as the first work in this field. According to their study, drop flow, stratified wavy flow, slug flow, plug flow, annular flow, intermittent flow, and dispersed flow were observed in the fuel/solvent two-phase system.…”

Section: Introductionmentioning

confidence: 99%

“…According to their results, the highest sulfur removal was achieved using tetrabutylammonium bromide and caprolactam with a 1:2 molar ratio. The deep removal of DBT 35,36 extraction efficiency glass circular iso-octane TBAB-PEG200 [1:2] flow pattern…”

Section: Introductionmentioning

confidence: 99%

Extractive Desulfurization in Microchannel Contactors Using Deep Eutectic Solvents: Optimization Using Central Composite Design (CCD) and Flow Pattern Mapping

Mahdavi,

Sobati,

Movahedirad

2023

Energy Fuels

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In the present study, the optimization of extractive desulfurization in the microchannels was investigated using a deep eutectic solvent (DES). The influence of some operating and microchannel geometrical parameters, including the initial sulfur concentration of fuel, the length of the microchannel, the DES flow rate, and the ratio of fuel to DES flow rate (RF/D), on sulfur removal was investigated using response surface methodology (RSM). Moreover, the flow pattern map in the microchannels was investigated. In this regard, different flow patterns of slug, lengthy slug, smooth annular, throat annular, wavy annular, and droplet were observed in the microchannels applied in the extractive desulfurization (EDS) process. Besides, the effects of the inertial force, interfacial tension force, and viscosity force on the different flow patterns were discussed by analyzing the capillary number, the Weber number, and the Reynolds number. It was found that the most effective regime in the EDS process in the microchannel is the slug flow pattern in which the interfacial tension force (6 × 10 −5 < Weber number < 0.82767) is dominant. Based on the analysis of the RSM proposed model, it was also found that the RF/D is the main influential parameter on sulfur removal, and 73.2% sulfur removal was achieved in the microchannel under the optimum conditions in a very short residence time of 2.5 s. The results also confirmed the capability of this EDS process for sulfur removal from real diesel fuel.

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“…These difficulties can be circumvented by utilizing miniaturized-scale channel contactors that require much lower quantities of solvent and enable a quick process. These contactors also offer the advantage of fast dynamics with high performance which simplifies the process due to the tiny size and the short transport path which ultimately minimizes the overall processing cost [42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Investigation on Deep Desulfurization of Liquid Fuel at the Microscale

et al. 2020

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Microscale processes offer a substantial advantage to the process industry as separation is conducted rapidly and efficiently. However, the effectiveness of the separation depends on the stability of the flow regime. Experimental and numerical analysis was carried out to characterize the flow patterns of polyethylene glycol 200 (PEG200) and diesel fuel at several flow ratios in order to achieve optimal conditions for a stable pattern. Computational fluid dynamics (CFD) was employed using the volume‐of‐fluid (VOF) model and the results were validated with the experimental data. Both experimental and numerical outcomes revealed two‐phase flow patterns. These findings enable the application of the simulated module for further liquid‐liquid mass transfer studies where sulfuric compounds exist as solutes in the fuel.

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Flow of deep eutectic solvent-simulated fuel in circular channels: Part II—Extraction of dibenzothiophene

Cited by 21 publications

References 15 publications

Transport phenomena in microchannels in liquid–liquid extraction (LLE) systems operating in a slug flow regime—A review

Transport phenomena in microchannels in liquid–liquid extraction (LLE) systems operating in a slug flow regime—A review

Extractive Desulfurization in Microchannel Contactors Using Deep Eutectic Solvents: Optimization Using Central Composite Design (CCD) and Flow Pattern Mapping

Hydrodynamic Investigation on Deep Desulfurization of Liquid Fuel at the Microscale

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