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    Binary biomaterials (inorganic material/natural resin): Synthesis, characterization and performance for adsorption of dyes
    (Scientific Publ-India, 2019) Duran, Hakan; Sismanoglu, Sedef; Sismanoglu, Tuba
    The sol-get method has been reported a useful techniques for synthesizing inorganic material HSS. In this study, the sol-gel process was used in two stages. In the first step, the hydrolysis of phenyltrimethoxysilane (PTMS) was carried out under acidic conditions. In the second step, the silane condensation proceeded under basic conditions and as a result the HSS were obtained. The obtaining HSS was treated with epichlorohydrin to carry out an epoxidation process (HSEPC). Then, HSEPC was functionalized by treatment with natural resin (gum arabic) and obtained HSEPCGUM. Gum arabic has GA-GP-GA-glycoprotein, hydroxyproline glucuronic acid and polysaccharides groups. Anionic and cationic dyes were adsorbed onto HSEPCGUM and values of absorbance was measurement by UV-Visible spectrophotometers. Adsorption isotherm experiments of adsorbed dyes on HSEPCGUM were performed at 35 degrees C with Freundlich, Langmuir and Dubinin-Radushkevich (DR) methods. Adsorption maximum capacity of HSEPCGUM (X-max) was obtained 100 mg/g for BB3. Before and after dye adsorption the structure characterization of adsorbent was done by SEM and FTIR analysis.
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    Removal of Basic Blue 3 from the Aqueous Solution with Ternary Polymer Nanocomposite: Swelling, Kinetics, Isotherms and Error Function
    (Chem Soc Pakistan, 2017) Karakus, Selcan; Sismanoglu, Sedef; Akdut, Gizem; Urk, Oyku; Tan, Ezgi; Sismanoglu, Tuba; Kilislioglu, Ayben
    Ternary nanocomposite (Gum Arabic / PVA / Alginate) adsorbent was prepared by a cost effective method for dyes removal, because gum arabic and alginate are the cheapest materials. Gum arabic is a natural gum. Alginate that has long carboxylate functional group is a biosorbent. In this study, Gum arabic/PVA/Alginate was prepared that this absorbent has the high specific surface area. BET was measured as 12.93 m(2)/g. Swelling of adsorbent was determined at different pH. For the maximum swelling ratio was obtained at pH 6.88 congruent to 7, adsorption experiments were studied by the batch method. Freundlich, BET and Langmuir isotherm methods were applied at different concentrations and constant temperature 25 degrees C. Finally, the adsorption capacity of the nanocomposite was calculated as 200 mgg(-1). The different adsorption kinetic models were studied at temperature from 25 degrees C to 45 degrees C and different concentrations. The thermodynamic parameters as Delta H degrees, Delta G degrees, and Delta S degrees were calculated.