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Synthesis and characterization of poly(vinyl-alcohol)-poly(β-cyclodextrin) copolymer membranes for aniline extraction
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  • Journal title : Membrane Water Treatment
  • Volume 7, Issue 3,  2016, pp.223-240
  • Publisher : Techno-Press
  • DOI : 10.12989/mwt.2016.7.3.223
 Title & Authors
Synthesis and characterization of poly(vinyl-alcohol)-poly(β-cyclodextrin) copolymer membranes for aniline extraction
Oughlis-Hammache, F.; Skiba, M.; Hallouard, F.; Moulahcene, L.; Kebiche-Senhadji, O.; Benamor, M.; Lahiani-Skiba, M.;
In this study, poly(vinyl-alcohol) and water insoluble -cyclodextrin polymer (-CDP) cross-linked with citric acid, have been used as macrocyclic carrier in the preparation of polymer inclusion membranes (PIMs) for aniline (as molecule model) extraction from aqueous media. The obtained membranes were firstly characterized by X-ray diffraction, Fourier transform infrared and water swelling test. The transport of aniline was studied in a two-compartment transport cell under various experimental conditions, such as carrier content in the membranes, stirring rate and initial aniline concentration. The kinetic study was performed and the kinetic parameters were calculated as rate constant (k), permeability coefficient (P) and flux (J). These first results demonstrated the utility of such polymeric membranes for environmental decontamination of toxic organic molecules like aniline. Predictive modeling of transport flux through these materials was then studied using design of experiments; the design chosen was a two level full factorial design . An empirical correlation between aniline transport flux and independent variables (Poly -CD membrane content, agitation speed and initial aniline concentration) was successfully obtained. Statistical analysis showed that initial aniline concentration of the solution was the most important parameter in the study domain. The model revealed the existence of a strong interaction between the Poly -CD membrane content and the stirring speed of the source solution. The good agreement between the model and the experimental transport data confirms the model`s validity.
polymer inclusion membranes (PIMs);insoluble -cyclodextrin polymer;aniline;design of experiment;statistical analysis;
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