Yazar "Elhussein, Elaf Abdelillah Ali" seçeneğine göre listele

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    Investigation of extractive interaction between ionic liquids and carbamazepine
    (Elsevier Science Bv, 2018) Sahin, Selin; Elhussein, Elaf Abdelillah Ali; Bilgin, Mehmet; Kurtulbas, Ebru; Bayazit, Sahika Sena
    Investigation of carbamazepine (CBP) extraction by four solvent systems containing ionic liquids (1-Butyl-3-methylimidazolium tetrafluoroborate-IL-1 and 1-Butyl-3-methyl-imidazolium hexafluoro phosphate-IL-2) as extractant in four diluents (diethyl adipate-DEA, diethyl malonate-DEM, diethyl succinate-DES and dibutyl phthalate-DBP) was performed at ambient temperature. The results were evaluated in terms of extraction yield (%) and distribution coefficient. IL-2 + DEA extractant system had the highest yield of CBP recovery with 88.45%. Regarding IL-1, the best performance was achieved by DEM with 82.03% of CBP recovery. Neutral media with the lowest addition of ionic liquid (20%, v/v) was found to be the optimum conditions to obtain the maximum recovery. (C) 2018 Elsevier B.V. All rights reserved.
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    Preparation of CeO2 nanofibers derived from Ce-BTC metal-organic frameworks and its application on pesticide adsorption
    (Elsevier Science Bv, 2018) Elhussein, Elaf Abdelillah Ali; Sahin, Selin; Bayazit, Sahika Sena
    In this study, CeO2 nanofibers derived from Ce(1,3,5-BTC)(H2O)(6) (Ce-BTC) metal organic frameworks were prepared, and then the affinity of CeO2 towards 2,4-dichlorophenoxyacetic acid (2,4-D) was investigated. After the Ce-BTC nanoparticles were synthesized by hydrothermal method, the Ce-BTC was calcinated, and CeO2 nanofibers were obtained. The Ce-BTC and CeO2 were characterized by SEM, XRD, MR and AFM methods, respectively. The adsorption studies of 2,4-D from water with CeO2 were carried out as batch type. The Langmuir, Freundlich and Sips isotherms were applied to the experimental data. And pseudo second order, intra-particle diffusion and Bangham kinetic models were used for determination of the kinetic mechanism of the adsorption. The maximum adsorption capacity for 2,4-D was found to be 86.16, 95.78 and 84.29 mg/g for each temperature (298, 308 and 318 K), respectively. (C) 2018 Elsevier B.V. All rights reserved.
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    Recovery of polyphenols from water using Zr-based metal-organic frameworks and their nanocomposites with graphene nanoplatelets
    (Elsevier Science Inc, 2019) Sahin, Selin; Elhussein, Elaf Abdelillah Ali; Salam, Mohamed Abdel; Bayazit, Sahika Sena
    In this study, Zr-based metal organic frameworks (UiO-66) and graphene nanoplatelets UiO-66 nanocomposites (GNP/UiO-66) were prepared using acid promoted method, and used for adsorption of two different polyphenols; oleuropein and hydroxytyrosol. Different characterization techniques used for exploring the morphological and structure properties of the UiO-66 and GNP/UiO-66 nano composites. The adsorption of oleuropein and hydroxytyrosol was studied by UiO-66 and different GNP/UiO-66 nanocomposites and results showed that most of the oleuropein and hydroxytyrosol were removed from the solution in 60 min and 180 min, respectively. The kinetic modelling of adsorption was studied. The adsorption isotherms were constructed at different pH values. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.