The main goal of this thesis was to prepare supported liquid membranes using oximes as a carrier which has .NOH functional group and to use these membranes in separations. For this purpose, in the first stage of the study, supported liquid membranes were prepared using oximes. Donnan dialysis experiments were carried out with these prepared supported liquid membranes. Initially; supports, solvents and ion were determined in order to use experimental studies as a result of donan dialysis experiments. Determined supports are; silicone, celgard 2500, hydrophobic PVDF and polyamide. celgard 2500 provided the highest selectivity between these supports. 2-nitrophenyl octly ether (o-NPOE) and dimethyl sulfoxide (DMSO) solvents showed best performance among various solvents. Pb(II), Cu(II), Ag(I) and Hg(II) metals were studied, the best results were found for Hg(II) ion. Therefore Hg(II) ion was selected to use in studies. In the second stage of the study, experiments were performed to find the best optimum conditions at various parameters such as feed phase pH, different carrier concentration and different periods of time. Subsequent experiments were carried out in accordance with the optimum conditions. In the third stage of the study, the best two oxime was chosen within the avaliable six oxime. These oximes are, N,N.-bis[1- biphenyl-2-hydroxyimino-2-(4-acetylanilino)-1-ethylidene]-1,3-propanediamine and N,N-bis[1-(4-phenylphenyl)-2-hydroxyimino-2-(4-chloroanilino)-1-ethylidene]-1,3- propanediamine. In the fourth stage of the study, accordance with the obtained results of the first three stages, the effects of feed phase concentration, strip phase concentration, presence of different ions of the feed phase, analyse with more dilute samples and real samples were examined with different parameters. As a result of these donnan dialysis experiments, recovery factor values (RF), flux values (J) and permeability coefficient values (P) of Hg(II) ion were calculated. The highest RF and J values were obtained when the feed phase concentration of 1x10-3 M Hg(NO3)2, the strip phase concentration of 0,1 M HCl and different valences ions were absent in the feed phase. The experiment results of real sample and studied experiment results with standard Hg(II) solutions are consistent with each other. Besides, the surface morphology changes of the supported liquid membranes were characterized by Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and FTIRATR. As a result, it was observed that oximes can be used as a carrier for supported liquid membranes and transport experiments were successfully realized. The stability of supported liquid membranes was also confirmed with replicate experiments. Keywords: Supported Liquid Membrane, Hg(II), Oximes, Donnan Dialysis
Tez (Doktora)- Süleyman Demirel Üniversitesi, Fen Bilimleri Enstitüsü, Kimya Anabilim Dalı, 2011.
Kaynakça var.
The main goal of this thesis was to prepare supported liquid membranes using oximes as a carrier which has .NOH functional group and to use these membranes in separations. For this purpose, in the first stage of the study, supported liquid membranes were prepared using oximes. Donnan dialysis experiments were carried out with these prepared supported liquid membranes. Initially; supports, solvents and ion were determined in order to use experimental studies as a result of donan dialysis experiments. Determined supports are; silicone, celgard 2500, hydrophobic PVDF and polyamide. celgard 2500 provided the highest selectivity between these supports. 2-nitrophenyl octly ether (o-NPOE) and dimethyl sulfoxide (DMSO) solvents showed best performance among various solvents. Pb(II), Cu(II), Ag(I) and Hg(II) metals were studied, the best results were found for Hg(II) ion. Therefore Hg(II) ion was selected to use in studies. In the second stage of the study, experiments were performed to find the best optimum conditions at various parameters such as feed phase pH, different carrier concentration and different periods of time. Subsequent experiments were carried out in accordance with the optimum conditions. In the third stage of the study, the best two oxime was chosen within the avaliable six oxime. These oximes are, N,N.-bis[1- biphenyl-2-hydroxyimino-2-(4-acetylanilino)-1-ethylidene]-1,3-propanediamine and N,N-bis[1-(4-phenylphenyl)-2-hydroxyimino-2-(4-chloroanilino)-1-ethylidene]-1,3- propanediamine. In the fourth stage of the study, accordance with the obtained results of the first three stages, the effects of feed phase concentration, strip phase concentration, presence of different ions of the feed phase, analyse with more dilute samples and real samples were examined with different parameters. As a result of these donnan dialysis experiments, recovery factor values (RF), flux values (J) and permeability coefficient values (P) of Hg(II) ion were calculated. The highest RF and J values were obtained when the feed phase concentration of 1x10-3 M Hg(NO3)2, the strip phase concentration of 0,1 M HCl and different valences ions were absent in the feed phase. The experiment results of real sample and studied experiment results with standard Hg(II) solutions are consistent with each other. Besides, the surface morphology changes of the supported liquid membranes were characterized by Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and FTIRATR. As a result, it was observed that oximes can be used as a carrier for supported liquid membranes and transport experiments were successfully realized. The stability of supported liquid membranes was also confirmed with replicate experiments. Keywords: Supported Liquid Membrane, Hg(II), Oximes, Donnan Dialysis