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Department of Biochemical and Chemical Engineering

January 2022

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  • Picture of the Month
The image shows DN15 measurement cell for extraction. © AD​/​BCI

Improving separation performance of the stirred-pulsed solvent extraction in a DN15 316Ti measurement cell.

Based on the superior separation performance of the stirred-pulsed solvent extraction, a new concept of the stirred-pulsed extraction for an extended process range was designed and put into operation. The new concept allows extraction to be carried out at higher pressure and temperatures. Consequently, the mass transfer rate increases and thus increases the separation efficiency of the solvent extraction. Here, investigations with the EFCE standard test system water (continuous)/ acetone/ n-butyl acetate (disperse) for different mass transfer directions (c → d & d → c) were performed at a constant frequency and rotational speed.