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Titolo:
Hollow fiber membrane contactors
Autore:
Gabelman, A; Hwang, ST;
Indirizzi:
Univ Cincinnati, Dept Chem Engn, Cincinnati, OH 45221 USA Univ CincinnatiCincinnati OH USA 45221 em Engn, Cincinnati, OH 45221 USA Givaudan Roure Flavors, Cincinnati, OH 45216 USA Givaudan Roure Flavors Cincinnati OH USA 45216 , Cincinnati, OH 45216 USA
Titolo Testata:
JOURNAL OF MEMBRANE SCIENCE
fascicolo: 1-2, volume: 159, anno: 1999,
pagine: 61 - 106
SICI:
0376-7388(19990701)159:1-2<61:HFMC>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
MICROPOROUS HYDROPHOBIC MEMBRANE; LIQUID-LIQUID-EXTRACTION; SOLVENT-EXTRACTION; MASS-TRANSFER; IMMOBILIZED INTERFACES; FACILITATED TRANSPORT; MEDIATED DIFFUSION; GAS-ABSORPTION; CITRIC-ACID; FATTY-ACIDS;
Keywords:
microporous and porous membranes; organic separations; membrane contactors;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
154
Recensione:
Indirizzi per estratti:
Indirizzo: Hwang, ST Univ Cincinnati, Dept Chem Engn, Cincinnati, OH 45221 USA Univ Cincinnati Cincinnati OH USA 45221 incinnati, OH 45221 USA
Citazione:
A. Gabelman e S.T. Hwang, "Hollow fiber membrane contactors", J MEMBR SCI, 159(1-2), 1999, pp. 61-106

Abstract

A membrane contactor is a device that achieves gas/liquid or liquid/liquidmass transfer without dispersion of one phase within another. This is accomplished by passing the fluids on opposite sides of a microporous membrane. By careful control of the pressure difference between the fluids, one of the fluids is immobilized in the pores of the membrane so that the fluid/fluid interface is located at the mouth of each pore. This approach offers a number of important advantages over conventional dispersed phase contactors,including absence of emulsions, no flooding at high flow rates, no unloading at low flow rates, no density difference between fluids required, and surprisingly high interfacial area. Indeed, membrane contactors typically offer 30 times more area than what is achievable in gas absorbers and 500 times what is obtainable in liquid/liquid extraction columns, leading to remarkably low HTU values. Although a number of membrane module geometries are possible, hollow fibermodules have received the most attention. In general, tube side mass transfer coefficients can be predicted with reasonable accuracy; on the other hand, shell side coefficients are more difficult to determine, and several research groups are currently addressing this problem. Membrane contactor technology has been demonstrated in a range of liquid/liquid and gas/liquid applications in fermentation, pharmaceuticals, wastewater treatment, chiral separations, semiconductor manufacturing, carbonationof beverages, metal ion extraction, protein extraction, VOC removal from waste gas, and osmotic distillation. This paper provides a general review ofhollow fiber membrane contactors, including operating principles, relevantmathematics, and applications. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 07:05:10