Removal of dissolved metals from water using micellar-enhanced ultrafiltration
Micellar-enhanced ultrafiltration (MEUF) is a novel technique to remove dissolved heavy metals from water by addition of ionic surfactant. Positively charged metal cations bind onto negatively charged surfactant aggregates (micelles) when anionic surfactants are used; negatively charged metal complexes can be bound onto positively charged micelles using cationic surfactants. In addition to the metal binding, dissolved organics solubilize or dissolve in the micelles. The solution is then passed through an ultrafiltration membrane which blocks the micelles, resulting in pure permeate water. The ability of this technique to remove divalent metal cations and divalent anionic metallic complexes from water is demonstrated in this work, either as individual metals or as mixtures of metals. A 500-fold reduction in metal concentration can be attained in one pass. Simultaneous removal of metals and organics is demonstrated. The effect of important operating variables on performance is also discussed. 10 refs., 3 figs., 3 tabs.
- Research Organization:
- Oklahoma Univ., Norman (USA). Inst. for Applied Surfactant Research
- DOE Contract Number:
- FG05-87ER13678
- OSTI ID:
- 6476504
- Report Number(s):
- DOE/ER/13678-15; CONF-8801133-2; ON: DE89005141
- Resource Relation:
- Conference: American Electroplaters Societies Foundation aerospace plating symposium, Orlando, FL, USA, 25 Jan 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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