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), Vol. 26:6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AQUEOUS SOLUTIONS
CHEMICAL COMPOSITION
ULTRAFILTRATION
CRESOLS
DISSOLUTION
REMOVAL
WATER POLLUTION CONTROL
CHLORIDES
CORRELATIONS
EQUILIBRIUM
MICELLAR SYSTEMS
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
PHASE STUDIES
PYRIDINIUM COMPOUNDS
SOLUTES
SURFACTANTS
AMINES
AMMONIUM COMPOUNDS
AROMATICS
AZINES
CHLORINE COMPOUNDS
CONTROL
DISPERSIONS
FILTRATION
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
MIXTURES
ORGANIC NITROGEN COMPOUNDS
PHENOLS
POLLUTION CONTROL
PYRIDINES
QUATERNARY COMPOUNDS
SEPARATION PROCESSES
SOLUTIONS
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
400201 - Chemical & Physicochemical Properties