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Separation Science and Technology Volume 48, 2013 - Issue 1
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EXTRACTION

Dispersed Phase Holdup in a Tall and Low Plate Free Area Liquid Pulsed Sieve-Plate Extraction Column

S. Y. Khawaja Institute of Chemical Engineering and Technology, University of the Punjab, Lahore, Pakistan
,
M. R. Usman Institute of Chemical Engineering and Technology, University of the Punjab, Lahore, PakistanCorrespondence[email protected]
,
S. Khan Institute of Chemical Engineering and Technology, University of the Punjab, Lahore, Pakistan
,
W. Afzal Institute of Chemical Engineering and Technology, University of the Punjab, Lahore, Pakistan
&
N. A. Akhtar Institute of Chemical Engineering and Technology, University of the Punjab, Lahore, Pakistan
Pages 175-182 | Received 18 Sep 2011, Accepted 28 Mar 2012, Published online: 02 Jan 2013
 
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Abstract

Dispersed phase holdup is studied in a tall and low plate free area pulsed sieve-plate extraction column. The 5.0 cm internal diameter column consists of 80 number of plates with percent free area of 13.5. The effects of pulse velocity (product of amplitude and frequency), superficial phase velocities, and solute addition are studied for five liquid-liquid systems with a wide range of interfacial tensions. The experimental holdup data is tested against the most widely recommended correlations and a new correlation has been developed that best fits the data.

ACKNOWLEDGEMENTS

The authors would like to acknowledge Mr. Umair, Mr. Zubair, and Mr. Umair for measuring the physical properties of the systems. Mr. Faryad and Mr. Salahuddin also deserve due acknowledgement for their kind assistance in performing the experiments.

Notes

*Measured by drop-weight method.

**(Citation20).

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