Microchannel Devices for Efficient Contacting of Liquids in Solvent Extraction

TeGrotenhuis, Ward E.; Cameron, Richard J.; Butcher, Mark; Martin, Peter M.; Wegeng, Robert S.

doi:10.1080/01496399908951075

Cited by 49 publications

(22 citation statements)

References 3 publications

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“…For a residence time of 1 min, an extraction efficiency of 82% is achieved for a 0.25 mm high microchannel. This is in agreement with [16], the diffusion distances are shorter and the specific interfacial area rises from 1000 to 4000 m 2 /m 3 . The small relative error of approximately 2.9% indicates, that the experiments were reproducible and that the residence time can be adjusted very accurately in a highly laminar flow regime (Re < 10).…”

Section: Effect Of Channel Shape and Heightsupporting

confidence: 90%

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Reactive mass transfer in a membrane-based microcontactor

Willersinn

Bart

2015

Chemical Engineering and Processing: Process Intensification

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Section: Effect Of Channel Shape and Heightsupporting

confidence: 90%

“…Many researchers focus on membrane-stabilized gas-liquid [13][14][15] and liquid-liquid interfaces [16][17][18] in microcontactors. This non-dispersive approach has several advantages over traditional dispersion-based extraction equipment (e.g.…”

Section: Introductionmentioning

confidence: 99%

Reactive mass transfer in a membrane-based microcontactor

Willersinn

Bart

2015

Chemical Engineering and Processing: Process Intensification

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“…The gas–liquid two‐phase reaction in microreactor mostly focuses on direct fluorination,4 hydrogenation,5 oxidation,6 gas absorption 7. The liquid–liquid two‐phase reaction in microreactor mostly focuses on nitration,8 diazo‐reaction,9 nanoparticles synthesis,10 extraction 11. For the optimization of microchemical devices, the mass transfer characteristics inside the devices must be systematically investigated.…”

Section: Introductionmentioning

confidence: 99%

Intensification of liquid–liquid two‐phase mass transfer by gas agitation in a microchannel

et al. 2009

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In this experiment, the inert gas is used to agitate two immiscible fluids in microchannels. The mass transfer performances with or without gas agitation are investigated. 30% TBP (in kerosene)-acetic acid-water is chosen as testing system, and nitrogen as agitating gas. The superficial velocities of the immiscible liquid-liquid two phases and gas phase are varied in the range from 0.02 to 1.2 m/s, and 0 to 3.0 m/s, respectively. In microchannels, with enough gas agitating intensity, high dispersion between two immiscible liquid phases can be obtained. The overall volumetric mean mass transfer coefficients are two-folds higher than those without gas agitating, which are in the range of 3.8-30.6 s À1. Some parameters which impact on the mass transfer process, such as the mixture superficial velocity of the immiscible liquid-liquid two phases, the gas superficial velocity, the microchannel structure, the gas inlet locations and the sampling time are experimentally investigated. V

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“…TeGrotenhuis et al presented a device in which micromachined channels are separated by a contactor plate or a membrane to stabilize the interface [40,41]. TeGrotenhuis et al presented a device in which micromachined channels are separated by a contactor plate or a membrane to stabilize the interface [40,41].…”

Section: Membranesmentioning

confidence: 99%

“…Another way of stabilizing the surface between the two liquid phases is to introduce a microporous membrane, leading to very high flow stability and no need for subsequent phase separation. TeGrotenhuis et al presented a device in which micromachined channels are separated by a contactor plate or a membrane to stabilize the interface [40,41]. Both the Teflon membrane and the Teflon-coated contactor plate were hydrophobic and yielded similar results.…”

Section: Membranesmentioning

confidence: 99%

Continuous Micro Liquid‐Liquid Extraction

2013

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Among the different separation processes, liquid‐liquid extraction especially benefits from microfluidics as the short molecular diffusion distance and large specific interfacial area in microchannels are advantageous for effective liquid/liquid contacting. An overview is given on different examples of continuous micro liquid‐liquid extraction. As contacting of the two phases as well as phase separation strongly depend on the flow pattern, one chapter is devoted to each parallel flow, segmented flow, and emulsions. Advantages and disadvantages of the three flow patterns are compared to each other. Additionally, possibilities for scaling up microfluidic concepts for higher‐throughput systems are presented.

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Microchannel Devices for Efficient Contacting of Liquids in Solvent Extraction

Cited by 49 publications

References 3 publications

Reactive mass transfer in a membrane-based microcontactor

Reactive mass transfer in a membrane-based microcontactor

Intensification of liquid–liquid two‐phase mass transfer by gas agitation in a microchannel

Continuous Micro Liquid‐Liquid Extraction

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