Prediction of mass transfer coefficients in an asymmetric rotating disk contactor using effective diffusivity

Meisam Torab-Mostaedi; Mehdi Asadollahzadeh; Jaber Safdari

doi:10.1016/j.cjche.2016.08.021

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Prediction of mass transfer coefficients in an asymmetric rotating disk contactor using effective diffusivity

Separation Science and Engineering | Updated：2026-01-06

- Prediction of mass transfer coefficients in an asymmetric rotating disk contactor using effective diffusivity
- Prediction of mass transfer coefficients in an asymmetric rotating disk contactor using effective diffusivity
- 中国化学工程学报（英文版） 2017年25卷第3期页码：288-293
- Affiliations：
  
  Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P. O. Box:11365-8486, Tehran,Iran
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.08.021
  中图分类号：
- 纸质出版：2017
- Accepted：
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Meisam Torab-Mostaedi, Mehdi Asadollahzadeh, Jaber Safdari. Prediction of mass transfer coefficients in an asymmetric rotating disk contactor using effective diffusivity[J]. 中国化学工程学报（英文版）, 2017,25(3):288-293.

Meisam Torab-Mostaedi, Mehdi Asadollahzadeh, Jaber Safdari. Prediction of mass transfer coefficients in an asymmetric rotating disk contactor using effective diffusivity[J]. , 2017, 25(3): 288-293.
Meisam Torab-Mostaedi, Mehdi Asadollahzadeh, Jaber Safdari. Prediction of mass transfer coefficients in an asymmetric rotating disk contactor using effective diffusivity[J]. 中国化学工程学报（英文版）, 2017,25(3):288-293. DOI： 10.1016/j.cjche.2016.08.021.

Meisam Torab-Mostaedi, Mehdi Asadollahzadeh, Jaber Safdari. Prediction of mass transfer coefficients in an asymmetric rotating disk contactor using effective diffusivity[J]. , 2017, 25(3): 288-293. DOI： 10.1016/j.cjche.2016.08.021.

摘要

Abstract

Mass transfer characteristics have been investigated in a 113 mm diameter asymmetric rotating disk contactor of the pilot plant scale for two different liquid-liquid systems. The effects of operating parameters including rotor speed and continuous and dispersed phase velocities on the volumetric overall mass transfer coefficients are investigated. The results show that the mass transfer performance is strongly dependent on agitation rate and interfacial tension

but only slightly dependent on phase flow rates. In this study

effective diffusivity is used instead of molecular diffusivity in the Gröber equation for estimation of dispersed phase overall mass transfer coefficient. The enhancement factor is determined experimentally and there from an empirical expression is derived for prediction of the enhancement factor as a function of Reynolds number. The predicted results compared to the experimental data show that the proposed correlation can efficiently predict the overall mass transfer coefficients in asymmetric rotating disk contactors.

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