Solubilization of trichloroethylene by polyelectrolyte/surfactant complexes

Journal Article · Thu Dec 01 00:00:00 EST 1994 · AIChE Journal (American Institute of Chemical Engineers); (United States)

DOI:https://doi.org/10.1002/aic.690401206· OSTI ID:6606114

Uchiyama, Hirotaka; Christian, S D; Tucker, E E; Scamehorn, J F ^[1]

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

An automated vapor pressure method is used to obtain solubilization isotherms for trichloroethylene (TCE) in polyelectrolyte/surfactant complexes throughout a wide range of solute activities at 20 and 25 C. The polyelectrolyte chosen is sodium poly(styrenesulfonate), PSS< and the surfactant is cetylpyridinium chloride or N-hexadecylpyridinium chloride, CPC. Data are fitted to the quadratic equation K = K[sub 0](1[minus][alpha]X + [beta]X[sup 2]), which correlates the solubilization equilibrium constant (K) with the mole fraction of TCE (X) in the micelles or complexes at each temperature. Activity coefficients are also obtained for TCE in the PSS/CPC complexes as a function of X. The general solubilization of TCE in PSS/CPC complexes resembles that of TCE in CPC micelles, as well as that of benzene or toluene in CPC micelles, suggesting that TCE solubilizes in ionic micelles both within the hydrocarbon micellar interior and near the micellar surface. The presence of the polyelectrolyte causes a small decrease in the ability of the cationic surfactant to solubilize TCE, while greatly reducing the concentration of the surfactant present in monomeric form. PSS/CPC complexes may be useful in colloid-enhanced ultrafiltration processes to purify organic-contaminated water.

• OSTI ID: 6606114
• Journal Information: AIChE Journal (American Institute of Chemical Engineers); (United States), Vol. 40:12; ISSN 0001-1541
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHLORINATED ALIPHATIC HYDROCARBONS
DISSOLUTION
SODIUM COMPOUNDS
SOLVENT PROPERTIES
SULFONATES
WASTE WATER
ULTRAFILTRATION
ELECTROLYTES
MICELLAR SYSTEMS
PURIFICATION
SURFACTANTS
ALKALI METAL COMPOUNDS
FILTRATION
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
LIQUID WASTES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
SEPARATION PROCESSES
WASTES
WATER
400105* - Separation Procedures