Liquid–liquid extraction in microchannels and conventional stage-wise extractors: A comparative study

Singh, Kunal Kumar; Renjith, Anu; Shenoy, K.T.

doi:10.1016/j.cep.2015.10.013

Cited by 64 publications

(32 citation statements)

References 45 publications

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“…To evaluate feasibility of the slug flow microreactor, the volumetric mass transfer coefficients ( k L α) are contrasted with other microreactors and traditional reactors in Figure . It is obvious that k L α of slug flow microreactor is much higher than those of other extractors . Among these microreactors, the k L α of hollow fiber supported liquid membrane (HFSLM) is the largest, followed by Y‐Y microchip, then hollow fiber contactor, and the maximum k L α of the T‐shaped microreactor measured by our group is 0.043 s −1 .…”

Section: Resultsmentioning

confidence: 72%

Green Effectively Enhanced Extraction to Produce Yttrium(III) in Slug Flow Microreactor

Guo

Chen

et al. 2020

Chin. J. Chem.

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of main observation and conclusion Process reinforcement research was carried out in Y-junction slug flow microreactors under variable conditions, using EHEHPA (2-ethylhexyl phosphonic acid mono-2-ethylhexyl) to extract yttrium(III) from hydrochloric acid solution. The influence of pH and flow rate on the extraction-reaction efficiency, slug size, mass transfer performance was assessed. The experimental results showed that maximum extraction-reaction efficiency of 91.85% can be achieved in the smallest microreactor (residence time is 11.25 s), which was significantly higher than traditional extraction requiring more than 10 min. The slug length tended to decrease with the increase of pH and flow rate. Volumetric mass transfer coefficients for the slug flow microreactors were found to be in the range of 1.39×10 −1 -1.642 s −1 that is several orders of magnitude higher as compared to traditional extractors, which testified the beneficial effects of Y-junction slug flow microreactor. Significant mass transfer reinforcement has prompted the use of microreactor as a suitable alternative to traditional extractors, which can advantageously improve the economic and environmental development of mineral processing. www.cjc.wiley-vch.deHe et al.

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Section: Resultsmentioning

confidence: 72%

Green Effectively Enhanced Extraction to Produce Yttrium(III) in Slug Flow Microreactor

Guo

Chen

et al. 2020

Chin. J. Chem.

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“…Microfluidic extraction can be categorized into two types according to flow pattern, i.e., co-laminar microfluidic extraction and droplet-based microfluidic extraction. Experiments on both configurations have proved that the microfluidics is a highly efficient approach to achieve extraction equilibrium in much shorter time compared with traditional bulk devices [6][7][8][9][10]. In a co-laminar microfluidic extraction system, since aqueous and organic streams flow side by side, it is convenient to achieve phase separation at the outlet.…”

Section: Nomenclaturementioning

confidence: 99%

Toward a mechanistic understanding of microfluidic droplet-based extraction and separation of lanthanides

Zhang

Wang

Luo

et al. 2019

Chemical Engineering Journal

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Droplet-based microfluidic extraction is a promising way for effective lanthanides extraction due to its outstanding mass transfer performance. The separation process can be greatly enhanced with the droplet-based microfluidic extraction technique. However, the interactions between mass transfer, microfluidic dynamics and extraction kinetics are still unclear, which has hindered further manipulation on microfluidic extraction to boost extraction performance. In this study, the mechanisms of microfluidic droplet-based extraction and separation intensification of lanthanides are for the first time unveiled by using a numerical simulation model. The limiting factors for the performance of droplet-based microfluidic extraction are identified through a model-based parametric analysis. The numerical analyses provide a comprehensive understanding of droplet-based microfluidic extraction systems and offer operation and optimization guidelines for future research in this area.

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“…Recently, progress on the development of micro-reactor and micromixers with the sub-millimeter scales provides high mass transfer rate because of their large surface-to-volume ratio and the short transport path [1][2][3]. Owing to vast application field of microfluidic systems, it is important that mixing performance and mass transfer characterizes of these devices have been evaluated as these issues are essential part of chemical processes [4].…”

Section: Introductionmentioning

confidence: 99%

Liquid–liquid two-phase mass transfer in T-type micromixers with different junctions and cylindrical pits

Kakavandi

Rahimi

Jafari

et al. 2016

Chemical Engineering and Processing - Process Intensification

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Liquid–liquid extraction in microchannels and conventional stage-wise extractors: A comparative study

Cited by 64 publications

References 45 publications

Green Effectively Enhanced Extraction to Produce Yttrium(III) in Slug Flow Microreactor

Green Effectively Enhanced Extraction to Produce Yttrium(III) in Slug Flow Microreactor

Toward a mechanistic understanding of microfluidic droplet-based extraction and separation of lanthanides

Liquid–liquid two-phase mass transfer in T-type micromixers with different junctions and cylindrical pits

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