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

Ahd Hamidi; Mos Van Berlo; Karel Ch A.M. Luyben; Luuk A.M. Van Der Wielen

doi:10.1002/(SICI)1097-4660(199903)74:3<244::AID-JCTB31>3.0.CO;2-W

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

Ahd Hamidi, Mos Van Berlo, Karel Ch A.M. Luyben, Luuk A.M. Van Der Wielen

Delft University of Technology

Research output: Contribution to journal › Conference article › peer-review

Abstract

The hydraulic capacity of countercurrent liquid-liquid extractors is constrained by its flooding characteristics. This study presents flooding data for aqueous two-phase systems containing PEG 4000 and Na₂SO₄ at various concentrations in a countercurrently operated sieve-plate column in the absence of solutes. Flooding limits, average droplet sizes and dispersed phase hold-ups at flooding conditions were measured as well as densities, interfacial tensions and viscosities. A correlation proposed by Richardson and Zaki was used successfully for the description of the slip velocities and thus maximum column throughputs.

Original language	English
Pages (from-to)	244-249
Number of pages	6
Journal	Journal of Chemical Technology and Biotechnology
Volume	74
Issue number	3
DOIs	https://doi.org/10.1002/(SICI)1097-4660(199903)74:3<244::AID-JCTB31>3.0.CO;2-W
Publication status	Published - Mar 1999
Externally published	Yes
Event	Proceedings of the 1999 4th International Conference on Separations for Biotechnology - Reading, GBR Duration: 29 Mar 1999 → 31 Mar 1999

Keywords

Aqueous two-phase systems
Bioseparation
Countercurrent extraction
Sieve-plate column

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10.1002/(SICI)1097-4660(199903)74:3<244::AID-JCTB31>3.0.CO;2-W

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title = "Flooding characteristics of aqueous two-phase systems in a countercurrent sieve-plate column",

abstract = "The hydraulic capacity of countercurrent liquid-liquid extractors is constrained by its flooding characteristics. This study presents flooding data for aqueous two-phase systems containing PEG 4000 and Na2SO4 at various concentrations in a countercurrently operated sieve-plate column in the absence of solutes. Flooding limits, average droplet sizes and dispersed phase hold-ups at flooding conditions were measured as well as densities, interfacial tensions and viscosities. A correlation proposed by Richardson and Zaki was used successfully for the description of the slip velocities and thus maximum column throughputs.",

keywords = "Aqueous two-phase systems, Bioseparation, Countercurrent extraction, Sieve-plate column",

author = "Ahd Hamidi and {Van Berlo}, Mos and Luyben, {Karel Ch A.M.} and {Van Der Wielen}, {Luuk A.M.}",

year = "1999",

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doi = "10.1002/(SICI)1097-4660(199903)74:3<244::AID-JCTB31>3.0.CO;2-W",

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volume = "74",

pages = "244--249",

journal = "Journal of Chemical Technology and Biotechnology",

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T1 - Flooding characteristics of aqueous two-phase systems in a countercurrent sieve-plate column

AU - Hamidi, Ahd

AU - Van Berlo, Mos

AU - Luyben, Karel Ch A.M.

AU - Van Der Wielen, Luuk A.M.

PY - 1999/3

Y1 - 1999/3

N2 - The hydraulic capacity of countercurrent liquid-liquid extractors is constrained by its flooding characteristics. This study presents flooding data for aqueous two-phase systems containing PEG 4000 and Na2SO4 at various concentrations in a countercurrently operated sieve-plate column in the absence of solutes. Flooding limits, average droplet sizes and dispersed phase hold-ups at flooding conditions were measured as well as densities, interfacial tensions and viscosities. A correlation proposed by Richardson and Zaki was used successfully for the description of the slip velocities and thus maximum column throughputs.

AB - The hydraulic capacity of countercurrent liquid-liquid extractors is constrained by its flooding characteristics. This study presents flooding data for aqueous two-phase systems containing PEG 4000 and Na2SO4 at various concentrations in a countercurrently operated sieve-plate column in the absence of solutes. Flooding limits, average droplet sizes and dispersed phase hold-ups at flooding conditions were measured as well as densities, interfacial tensions and viscosities. A correlation proposed by Richardson and Zaki was used successfully for the description of the slip velocities and thus maximum column throughputs.

KW - Aqueous two-phase systems

KW - Bioseparation

KW - Countercurrent extraction

KW - Sieve-plate column

UR - http://www.scopus.com/inward/record.url?scp=0032984138&partnerID=8YFLogxK

U2 - 10.1002/(SICI)1097-4660(199903)74:3<244::AID-JCTB31>3.0.CO;2-W

DO - 10.1002/(SICI)1097-4660(199903)74:3<244::AID-JCTB31>3.0.CO;2-W

M3 - Conference article

AN - SCOPUS:0032984138

SN - 0268-2575

VL - 74

SP - 244

EP - 249

JO - Journal of Chemical Technology and Biotechnology

JF - Journal of Chemical Technology and Biotechnology

IS - 3

T2 - Proceedings of the 1999 4th International Conference on Separations for Biotechnology

Y2 - 29 March 1999 through 31 March 1999

ER -

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

Abstract

Keywords

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