Measurement of Mass Transfer Coefficients and Their Modelling of Continuous Counter-Current Aqueous Two-Phase System in a Packed Extraction Column

CIESC Journal

Measurement of Mass Transfer Coefficients and Their Modelling of Continuous Counter-Current
Aqueous Two-Phase System in a Packed Extraction Column

阎恭喜; 朱自强; 关怡新; 韩兆熊

School of Chemical Engineering, Zhejiang University, Hangzhou 310027,China

收稿日期:1998-03-06 修回日期:1900-01-01 出版日期:1999-09-28 发布日期:1999-09-28
通讯作者: 阎恭喜

Measurement of Mass Transfer Coefficients and Their Modelling of Continuous Counter-Current
Aqueous Two-Phase System in a Packed Extraction Column

Yan Gongxi, Zhu Ziqiang, Guan Yixin; Han Zhaoxiong

School of Chemical Engineering, Zhejiang University, Hangzhou 310027,China

Received:1998-03-06 Revised:1900-01-01 Online:1999-09-28 Published:1999-09-28
Contact: Yan Gongxi

摘要/Abstract

摘要： Overall dispersed side volumetric mass transfer coefficients forprotein and amino acids
were measured in continuous countercurrentPEG4000/KHP aqueous two-phase systems in a 57 mm
I.D. packed extractioncolumn. A model for overall dispersed side volumetric mass
transfercoefficients was derived by describing the motion of the drops based uponNavier-
Stokes equation combined with the relationship between mass transfercoefficients and the
drop velocity. The model provides good predictions andcan be successfully used in aqueous
two-phase extraction. The averagerelative deviation between calculated values and
experimental data rangesfrom 8% to 14%.

关键词: aqueous two-phase system;continuous countercurrent extraction;mass transfer coefficient;model;packed column

Abstract: Overall dispersed side volumetric mass transfer coefficients forprotein and amino acids
were measured in continuous countercurrentPEG4000/KHP aqueous two-phase systems in a 57 mm
I.D. packed extractioncolumn. A model for overall dispersed side volumetric mass
transfercoefficients was derived by describing the motion of the drops based uponNavier-
Stokes equation combined with the relationship between mass transfercoefficients and the
drop velocity. The model provides good predictions andcan be successfully used in aqueous
two-phase extraction. The averagerelative deviation between calculated values and
experimental data rangesfrom 8% to 14%.

Key words: aqueous two-phase system, continuous countercurrent extraction, mass transfer coefficient, model, packed column

阎恭喜, 朱自强, 关怡新, 韩兆熊. Measurement of Mass Transfer Coefficients and Their Modelling of Continuous Counter-Current
Aqueous Two-Phase System in a Packed Extraction Column[J]. CIESC Journal.

Yan Gongxi, Zhu Ziqiang, Guan Yixin, Han Zhaoxiong. Measurement of Mass Transfer Coefficients and Their Modelling of Continuous Counter-Current
Aqueous Two-Phase System in a Packed Extraction Column[J]. .

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Measurement of Mass Transfer Coefficients and Their Modelling of Continuous Counter-Current
Aqueous Two-Phase System in a Packed Extraction Column

Measurement of Mass Transfer Coefficients and Their Modelling of Continuous Counter-Current
Aqueous Two-Phase System in a Packed Extraction Column

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