Removal of divalent metal cations and their mixtures from aqueous streams using micellar-enhanced ultrafiltration

Journal Article · Thu Mar 31 23:00:00 EST 1994 · Separation Science and Technology; (United States)

DOI:https://doi.org/10.1080/01496399408006627· OSTI ID:7267650

Scamehorn, J F; Christian, S D; El-Sayed, D A; Uchiyama, Hirotaka ^[1]; Younis, S S ^[2]

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1. Univ. of Oklahoma, Norman, OK (United States)
2. Cairo Univ. (Egypt)

Micellar-enhanced ultrafiltration (MEUF) is a novel membrane-based separation technique that can be used to remove multivalent metal cations from aqueous streams. In this technique an anionic surfactant is added to the aqueous stream containing the metal cations to be removed. The surfactant forms highly charged aggregates called micelles onto which the metal cations adsorb or bind. The aqueous stream is then passed through an ultrafiltration membrane with pores small enough to block the passage of the micelles and adsorbed metal cations. In this study, MEUF has been shown to remove divalent cadmium, zinc, copper, and calcium ions and their mixtures with rejections of at least 96%. A previously developed equilibrium binding model describes the results successfully. Under reasonable conditions the flux rates are not substantially below that of pure water, indicating the feasibility of MEUF for industrial application. 19 refs., 14 figs., 4 tabs.

• DOE Contract Number: FG05-87ER13678
• OSTI ID: 7267650
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 29:7; ISSN 0149-6395; ISSN SSTEDS
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
400201 -- Chemical & Physicochemical Properties
ADSORPTION
CADMIUM IONS
CALCIUM IONS
CATIONS
CHARGED PARTICLES
COPPER IONS
DATA
EQUILIBRIUM
EXPERIMENTAL DATA
FILTRATION
HYDROGEN COMPOUNDS
INDUSTRIAL WASTES
INFORMATION
IONS
LIQUID WASTES
MEMBRANES
MICELLAR SYSTEMS
NUMERICAL DATA
OXYGEN COMPOUNDS
POROSITY
SEPARATION PROCESSES
SORPTION
SURFACTANTS
THEORETICAL DATA
ULTRAFILTRATION
WASTE WATER
WASTES
WATER
ZINC IONS