✦ LIBER ✦

Flooding characteristics of aqueous two-phase systems in a countercurrent sieve-plate column

✍ Scribed by Ahd Hamidi; Mos van Berlo; Karel ChAM Luyben; Luuk AM van der Wielen

Publisher: Wiley (John Wiley & Sons)
Year: 1999
Tongue: English
Weight: 132 KB
Volume: 74
Category: Article
ISSN: 0268-2575
DOI: 10.1002/(sici)1097-4660(199903)74:3<244::aid-jctb31>3.0.co;2-w

No coin nor oath required. For personal study only.

✦ Synopsis

The hydraulic capacity of countercurrent liquid-liquid extractors is constrained by its ýooding characteristics. This study presents ýooding data for aqueous two-phase systems containing PEG 4000 and at various concentrations in a countercurrently operated sieve-plate column in Na 2 SO 4 the absence of solutes. Flooding limits, average droplet sizes and dispersed phase hold-ups at ýooding conditions were measured as well as densities, interfacial tensions and viscosities. A correlation proposed by Richardson and Zaki (Trans IChemE 32 :35-53 (1954)) was used successfully for the description of the slip velocities and thus maximum column throughputs. 1999 Society of Chemical Industry

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