Use of ligand-modified micellar-enhanced ultrafiltration to selectively separate copper ions from wastewater streams

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/10146344· OSTI ID:10146344

Shadizadeh, Susan Bakhtiari ^[1]

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

The selective removal of target ions from an aqueous solution containing ions of like charge by ligand-modified micellar-enhanced ultrafiltration (LM-MEUF), is presented. In LM-MEUF, surfactant and specially tailored ligand are added to the contaminated stream. The surfactant forms aggregates called micelles, the hydrocarbon core of which the ligand complexed with the target species will solubilize. The surfactant is chosen to have the same charge type as the target ion; therefore, other ions (with similar charge) will not associate with the micelle, which makes the separation of the target ion selective. The solution is then processed by ultrafiltration, using a membrane with pore size small enough to block the passage of the micelles. In this study the divalent copper is the target ion in the solution containing divalent calcium. The surfactant is cetylpyridinium chloride (CPC) and the ligand is 4-hexadecyloxybenzyliminodiacetic acid (C₁₆BIDA). Experiments were conducted with batch stirred cells and the results have been compared to separation that take place under a variety of conditions in the LM-MEUF process. Rejections of copper of up to 99.8% are observed, with almost no rejection of calcium, showing that LM-MEUF has excellent selectivity and separation efficiency.

• Research Organization: Oklahoma Univ., Norman, OK (United States)
• Sponsoring Organization: USDOE, Washington; Department of the Interior; National Science Foundation (NSF); Environmental Protection Agency (EPA)
• DOE Contract Number: FG05-87ER13678
• OSTI ID: 10146344
• Report Number(s): DOE/ER/13678--74; ON: DE94010826; BR: KC0302020; CNN: Grant CBT-8814147; G1174140-4021; R-817450-01-0
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105
COPPER
EXPERIMENTAL DATA
INDUSTRIAL WASTE MANAGEMENT
MICELLAR SYSTEMS
SEPARATION PROCEDURES
ULTRAFILTRATION
WASTE WATER
WATER TREATMENT