Direct extraction of Mo(VI) from sulfate solution by synergistic extractants in the rotation column

doi:10.1016/j.cjche.2019.11.011

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (2): 445-455.DOI: 10.1016/j.cjche.2019.11.011

• Separation Science and Engineering • 上一篇下一篇

Direct extraction of Mo(VI) from sulfate solution by synergistic extractants in the rotation column

Benyamin Shakib¹, Meisam Torab-Mostaedi², Mohammad Outokesh¹, Mehdi Asadollahzadeh²

1 Department of Energy Engineering, Sharif University of Technology, P.O. Box 11365-8639, Tehran, Iran;
2 Materials and Nuclear Fuel Research School, Nuclear Science and Technology Research Institute, P.O. Box:11365-8486, Tehran, Iran

收稿日期:2019-02-28 修回日期:2019-10-29 出版日期:2020-02-28 发布日期:2020-05-21
通讯作者: Meisam Torab-Mostaedi, Mehdi Asadollahzadeh

Direct extraction of Mo(VI) from sulfate solution by synergistic extractants in the rotation column

Benyamin Shakib¹, Meisam Torab-Mostaedi², Mohammad Outokesh¹, Mehdi Asadollahzadeh²

1 Department of Energy Engineering, Sharif University of Technology, P.O. Box 11365-8639, Tehran, Iran;
2 Materials and Nuclear Fuel Research School, Nuclear Science and Technology Research Institute, P.O. Box:11365-8486, Tehran, Iran

Received:2019-02-28 Revised:2019-10-29 Online:2020-02-28 Published:2020-05-21
Contact: Meisam Torab-Mostaedi, Mehdi Asadollahzadeh

摘要/Abstract

摘要： Direct extraction of molybdenum from sulfate solution with synergistic extractants (mixture of D₂EHPA and TBP) was studied in the rotation column. The influence of extractant concentration and initial pH of aqueous phase was studied in the bench scale experiments. The outcomes demonstrated that the synergistic solvent extraction enhances the constancy of the extracted complexes for transfer into the organic phase. In the continuous experiments, the effect of different operating parameters such as speed of agitation, inlet solvent flow rate and inlet aqueous flow rate on the holdup, mean drop size, drop size distribution, slip and characteristic velocities and extraction percentage were examined. Modified correlations were proposed for prediction of hydrodynamic parameters with consideration of reaction extraction condition in the rotation column. Furthermore, these correlations were compared with the experimental data. According to the results, the direct extraction of Mo (VI) from aqueous solution and sulfuric media with extraction efficiency of 90.4% was obtained at higher rotor speed (240 r·min^-1 rpm) in this column.

关键词: Direct extraction, Molybdenum, Rotation column, Synergistic, Extractant

Abstract: Direct extraction of molybdenum from sulfate solution with synergistic extractants (mixture of D₂EHPA and TBP) was studied in the rotation column. The influence of extractant concentration and initial pH of aqueous phase was studied in the bench scale experiments. The outcomes demonstrated that the synergistic solvent extraction enhances the constancy of the extracted complexes for transfer into the organic phase. In the continuous experiments, the effect of different operating parameters such as speed of agitation, inlet solvent flow rate and inlet aqueous flow rate on the holdup, mean drop size, drop size distribution, slip and characteristic velocities and extraction percentage were examined. Modified correlations were proposed for prediction of hydrodynamic parameters with consideration of reaction extraction condition in the rotation column. Furthermore, these correlations were compared with the experimental data. According to the results, the direct extraction of Mo (VI) from aqueous solution and sulfuric media with extraction efficiency of 90.4% was obtained at higher rotor speed (240 r·min^-1 rpm) in this column.

Key words: Direct extraction, Molybdenum, Rotation column, Synergistic, Extractant

Benyamin Shakib, Meisam Torab-Mostaedi, Mohammad Outokesh, Mehdi Asadollahzadeh. Direct extraction of Mo(VI) from sulfate solution by synergistic extractants in the rotation column[J]. 中国化学工程学报, 2020, 28(2): 445-455.

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Direct extraction of Mo(VI) from sulfate solution by synergistic extractants in the rotation column

Direct extraction of Mo(VI) from sulfate solution by synergistic extractants in the rotation column

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