Author
Sema Erenturk
Other affiliations: Ege University
Bio: Sema Erenturk is an academic researcher from Istanbul Technical University. The author has contributed to research in topics: Adsorption & Freundlich equation. The author has an hindex of 10, co-authored 32 publications receiving 412 citations. Previous affiliations of Sema Erenturk include Ege University.
Topics: Adsorption, Freundlich equation, Sorption, Langmuir, Selenium
Papers
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TL;DR: In this article, the adsorption of Th(IV) on calcined and flux calcined diatomite was found to be a spontaneous and endothermic process and the experimental data fitted very well the pseudo-second-order kinetic model and also followed by intra-particle diffusion model.
82 citations
TL;DR: In this article, the authors studied the sorption of uranium (VI) ions on magnesium oxide (MgO) from aqueous solutions and found that the optimum sorption efficiency was 87.61 ± 3.10%.
Abstract: The objective of this work was to study the sorption of uranium (VI) ions on magnesium oxide (MgO) from aqueous solutions. The MgO has been prepared via hydroxide precipitation followed by thermal decomposition of the hydroxide. MgO was characterized by X-ray powder diffraction, scanning electron microscope, and multipoint Brunauer, Emmett, and Teller. The relative importance of test parameters such concentration of adsorbate, pH, contact time, and temperature on adsorption performance of MgO for U(VI) ion were studied and the optimum sorption efficiency was found as 87.61 ± 3.10%. Desorption tests were also carried out and desorption efficiency was found as 100% with NH4Cl and NaNO3 solutions containing 0.1 M on a single step. Typical sorption isotherms (Freundlich and Dubinin-Raduskevich) were determined for the mechanism of sorption process and thermodynamic constants (ΔH°, ΔS°, and ΔG°) were calculated as −8.738 kJ mol−1, −21.68 kJ mol−1, and 0.102 kJ mol−1 K−1, respectively. © 2011 American Institute of Chemical Engineers Environ Prog, 2011
76 citations
TL;DR: In this article, the ability of a synthetic goethite nanocrystal to remove hexavalent uranium from aqueous solutions under various conditions was examined and the experimental data fitted well with the pseudo-second-order kinetics.
65 citations
TL;DR: In this paper, the adsorption of strontium from aqueous solutions onto PAN/zeolite composite was studied as a function of the initial stontium concentration, pH of the solution, contact time and temperature.
Abstract: This work reports the adsorption of strontium from aqueous solutions onto PAN/zeolite composite. The strontium adsorption on the composite adsorbent was studied as a function of initial strontium concentration, pH of the solution, contact time and temperature. Adsorption isotherms like Langmuir, Freundlich,Dubinin–Radushkevich (D–R) and Temkin were used to analyze the equilibrium data at the different concentrations.Adsorption process well fitted to Temkin isotherm model. Thermodynamic parameters such as the changes in enthalpy, entropy and Gibbs’ free energy were determined, showing adsorption to be an exothermic and spontaneous process.
50 citations
TL;DR: In this paper, a series of experiments was conducted in a batch system to assess the effect of the system variables, i.e. initial pH, temperature, initial uranium concentration and contact time.
44 citations
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TL;DR: The present paper is focused on the remediation of noxious wastes from wastewater using graphene based materials as adsorbents, and it contains all the details on materials - i.e., from their synthesis to application in the field of wastewater treatment (removal of hazardous contaminants of different chemical nature - heavy and rare-earth metal ions, and organic compounds - from wastewater effluents).
320 citations
TL;DR: The main synthesis methods, antibacterial activity and antibacterial mechanisms of MgO nanoparticles are reviewed.
Abstract: Bacterial pollution is a great risk for human health Nanotechnology offers a way to develop new inorganic antibacterial agents Nano-inorganic metal oxide has a potential to reduce bacterial contamination MgO is an important inorganic oxide and has been widely used in many fields Many studies have shown that MgO nanoparticles have good antibacterial activity Therefore, in this paper, the main synthesis methods, antibacterial activity and antibacterial mechanisms of MgO nanoparticles are reviewed
305 citations
TL;DR: It is suggested that magnetic Fe(3)O(4)@SiO(2) composite particles can be used as a potential adsorbent for sorption uranium and also provided a simple, fast separation method for removal of heavy metal ion from aqueous solution.
238 citations
TL;DR: Magnesium hydroxide and magnesium oxide are compounds with favorable and unique properties, leading to a broad range of opportunities for their use in science, and above all in practical applications.
206 citations
TL;DR: In this paper, naturally occurring radionuclides were measured using HPGe γ-ray spectrometer to evaluate the radiation health hazard indices and excess lifetime cancer risk (ELCR ).
167 citations