Solubilization of cresols by 1-hexadecylpyridinium chloride micelles and removal of cresols from aqueous streams by micellar-enhanced ultrafiltration
In micellar-enhanced ultrafiltration (MEUF), solubilization of organic solutes in micelles, combined with ultrafiltration of these micellar solutions, leads to the removal of dissolved, low molecular weight organic compounds from water. The permeate from MEUF contains the organic solute at concentrations equal to the unsolubilized solute concentration in the rejected (retentate) solution. Therefore, the equilibrium solubilization of the solute dictates the permeate purity or rejection of the solute by the membrane. The semiequilibrium dialysis method has been used to investigate the equilibrium solubilization of o-, m-, and p-cresol by aqueous solutions of 1-hexadecylpyridinium chloride, throughout a range of concentrations of the cresols and the surfactant. The apparent solubilization constant, K = X/sub c//(concentration of unsolubilized cresol), has been correlated with X/sub c/, the mole fraction of cresol in the micelle.
- Research Organization:
- Dept. of Chemistry, North Eastern Hill Univ., Shillong 793003
- OSTI ID:
- 5879965
- Journal Information:
- Ind. Eng. Chem. Res.; (United States), Journal Name: Ind. Eng. Chem. Res.; (United States) Vol. 26:6; ISSN IECRE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201 -- Chemical & Physicochemical Properties
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AMINES
AMMONIUM COMPOUNDS
AQUEOUS SOLUTIONS
AROMATICS
AZINES
CHEMICAL COMPOSITION
CHLORIDES
CHLORINE COMPOUNDS
CONTROL
CORRELATIONS
CRESOLS
DISPERSIONS
DISSOLUTION
EQUILIBRIUM
FILTRATION
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
MICELLAR SYSTEMS
MIXTURES
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHASE STUDIES
PHENOLS
POLLUTION CONTROL
PYRIDINES
PYRIDINIUM COMPOUNDS
QUATERNARY COMPOUNDS
REMOVAL
SEPARATION PROCESSES
SOLUTES
SOLUTIONS
SURFACTANTS
ULTRAFILTRATION
WATER POLLUTION CONTROL