CARBON-DIOXIDE REGENERATION OF BLOCK-COPOLYMER MICELLES USED FOR EXTRACTION AND CONCENTRATION OF TRACE ORGANICS

Authors
MCFANN GJ JOHNSTON KP HURTER PN HATTON TA
Citation
Gj. Mcfann et al., CARBON-DIOXIDE REGENERATION OF BLOCK-COPOLYMER MICELLES USED FOR EXTRACTION AND CONCENTRATION OF TRACE ORGANICS, Industrial & engineering chemistry research, 32(10), 1993, pp. 2336-2344
Citations number
43
Categorie Soggetti
Engineering, Chemical
Journal title
Industrial & engineering chemistry research → ACNP
ISSN journal
08885885
Volume
32
Issue
10
Year of publication
1993
Pages
2336 - 2344
Database
ISI
SICI code
0888-5885(1993)32:10<2336:CROBMU>2.0.ZU;2-I
Abstract
The phase equilibria distribution of naphthalene between CO2, water, a nd poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) blo ck copolymer micelle phases is examined experimentally and predicted s emiquantitatively using a molecular thermodynamic model. The predictio ns treat the poly(propyleneoxide) micelle core as a ''pseudophase'' re sembling an ether. The favorable distribution coefficients at pressure s as low as 70 bar suggest that CO2 is appropriate for regenerating bl ock copolymer micelles used for concentration of trace organics in dil ute aqueous solutions.