Multistage rotor‐stator spinning disc reactor

Meeuwse, M Marco; Schaaf, J. van der; Schouten, JC Jaap

doi:10.1002/aic.12586

Cited by 76 publications

(59 citation statements)

References 20 publications

(27 reference statements)

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“…The mass transfer at the membrane surface is assumed very high because of the very high mixing of the electrolyte at the membrane surface which is elaborated in our earlier paper [12]. Thus, the boundary layer thickness is calculated from the measured mass transfer in a rotor-stator spinning disc reactor which is proved to have a very high mass transfer coefficient [35]. The concentration jump of ionic species at the solution and the membrane interface for both anolyte and catholyte sides are depicted in Fig.…”

Section: Model Approachmentioning

confidence: 99%

Nernst–Planck modeling of multicomponent ion transport in a Nafion membrane at high current density

et al. 2016

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A mathematical model of multicomponent ion transport through a cation-exchange membrane is developed based on the Nernst-Planck equation. A correlation for the non-linear potential gradient is derived from current density relation with fluxes. The boundary conditions are determined with the Donnan equilibrium at the membranesolution interface, taking into account the convective flow. Effective diffusivities are used in the model based on the correlation of tortuosity and ionic diffusivities in free water. The model predicts the effect of an increase in current density on the ion concentrations inside the membrane. The model is fitted to the previously published experimental data. The effect of current density on the observed increase in voltage drop and the decrease in permselectivity has been analyzed using the available qualitative membrane swelling theories. The observed nonlinear behavior of the membrane voltage drop versus current density can be explained by an increase in membrane pore diameter and an increase in the number of active pores. We show how the membrane pore diameter increases and dead-end pores open up when the current density is increased.

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Section: Model Approachmentioning

confidence: 99%

Nernst–Planck modeling of multicomponent ion transport in a Nafion membrane at high current density

et al. 2016

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“…18 Multiple discs were mounted on a single rotational axis to obtain ideally stirred tanks-in-series, which ultimately will lead to more plug flow behavior of the fluid flow in the reactor. 7,19 Therefore, this reactor is a promising tool to achieve process intensification goals, for example, realize a reduction of equipment volume, enhance volumetric productivity, and increase of mass-transfer rates in continuous flow reactors. This article presents the residence time distribution in the rotor-stator spinning disc reactor as a function of the rotational disc speed, axial disc spacing, and the volumetric flow rate.…”

Section: Introductionmentioning

confidence: 99%

Residence time distribution in a single‐phase rotor–stator spinning disk reactor

et al. 2013

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A reactor model for the single-phase rotor-stator spinning disc reactor based on residence time distribution measurements is described. For the experimental validation of the model, the axial clearance between the rotor and both stators is varied from 1.0 3 10 23 to 3.0 3 10 23 m, the rotational disc speed is varied from 50 to 2000 RPM, and the volumetric flow rate is varied from 7.5 3 10 26 to 22.5 3 10 26 m 3 s 21 . Tracer injection experiments show that the residence time distribution can be described by a plug flow model in combination with 2-3 ideally stirred tanks-in-series. The resulting reactor model is explained with the effect of turbulence, the formation of Von K arm an and B€ odewadt boundary layers, and the effect of the volumetric flow rate.

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“…In a novel rotor-stator spinning disc reactor, Meeuwse et al [118] reported that the mass transfer coeffi cient ( k GL a GL ) is one order of magnitude higher than the conventional reactor system; however, the energy input is around three orders of magnitude higher ( Figure 30 transfer per unit of energy dissipation is around 80 ml 3 MJ -1 [121] . From Figure 23 is can also be seen that the mass transfer coeffi cient is higher as compared to the conventional equipment [118][119][120]. The higher mass transfer coeffi cients in the rotor-stator spinning disc reactor can have a significant infl uence on the selectivity in the case of competitive or consecutive reactions.…”

Section: Spinning Disc Reactor Technologymentioning

confidence: 99%

Process intensification in green synthesis

Kumar

Nigam

2012

Green Processing and Synthesis

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In the past few decades there has been an extensive increase in the research for green synthesis processes due to environmental concerns, industrial safety and sustainable development, which makes it an attractive alternative to the conventional synthesis processes. The interest of researchers in the green synthesis processes highlights the importance of understanding the mechanism and the fundamental differences between the different processes. The number of publications in the fi eld of " Green Synthesis " in journals, proceedings, patents, etc. has increased by almost 20 times from 2001 to 2010. The published reports are mainly concerned with green synthesis with catalytic processes, less harmful solvents and process intensifi ed techniques. In the present article, the technological development efforts in the area of green synthesis are summarized. Various techniques for green synthesis process intensifi cation are discussed, e.g., mixers, microreactors, spin disc reactor, oscillated fl ow reactors, microwave irradiation, ultrasonication, multifunctional membranes and coiled fl ow inverter. The applications of green synthesis processes for biofuel, nanoparticle, ionic liquids and pharmaceutical production are also discussed.

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Multistage rotor‐stator spinning disc reactor

Cited by 76 publications

References 20 publications

Nernst–Planck modeling of multicomponent ion transport in a Nafion membrane at high current density

Nernst–Planck modeling of multicomponent ion transport in a Nafion membrane at high current density

Residence time distribution in a single‐phase rotor–stator spinning disk reactor

Process intensification in green synthesis

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