Microemulsion liquid membranes. I. Application to acetic acid removal from water

Journal Article · Sat Aug 01 04:00:00 EDT 1992 · Separation Science and Technology; (United States)

DOI:https://doi.org/10.1080/01496399208019421· OSTI ID:7020137

Wiencek, J M; Qutubuddin, S ^[1]

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1. Case Western Reserve Univ., Cleveland, Ohio (United States)

A separation technique utilizing nonionic microemulsions as emulsion liquid membranes has been successfully applied to the removal of acetic acid from an aqueous feed phase. The surfactant systems were carefully characterized in order to assure that they were truly microemulsions. The effects of mixing intensity, feed concentration, treat ratio, and microemulsion viscosity on the separation kinetics were investigated. The microemulsions did not typically display leakage and had negligible swell over 5-minute duration. The reversible phase behavior of the microemulsion was utilized to demulsify the liquid membrane phase and recover the acetate ion via a temperature change of approximately 40 C. Material balances closed to within 10% and rates of separation were faster than the sampling rates when the microemulsion was fully dispersed in the aqueous feed phase.

• OSTI ID: 7020137
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 27:10; ISSN SSTED; ISSN 0149-6395
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
ACETIC ACID
AQUEOUS SOLUTIONS
CARBOXYLIC ACIDS
CHEMICAL PREPARATION
COLLOIDS
CRYSTAL STRUCTURE
DATA
DISPERSIONS
DROPLETS
EFFICIENCY
EMULSIONS
ENERGY EFFICIENCY
EXPERIMENTAL DATA
INFORMATION
INTERFACES
KINETICS
LEAKS
LIGHT SCATTERING
MATERIAL BALANCE
MEMBRANES
MICROEMULSIONS
MICROSTRUCTURE
MIXING
MIXTURES
MONOCARBOXYLIC ACIDS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
PARTICLES
PHASE STUDIES
QUANTITY RATIO
SAMPLING
SCATTERING
SEPARATION PROCESSES
SOLUBILITY
SOLUTIONS
SUPPORTED LIQUID MEMBRANES
SURFACE PROPERTIES
SURFACE TENSION
SURFACTANTS
SYNTHESIS
TECHNOLOGY ASSESSMENT
TITRATION
VISCOSITY