Browsing by Author "Gode, Fethiye"

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    Conference Object
    Citation - Scopus: 6
    Efficient Decolorization of Anionic Dye (methyl Blue) by Natural-Based Biosorbent (nano-Magnetic Sophora Japonica Fruit Seed Biochar)
    (ISRES Publishing, 2022) Bayram, Okan; Köksal, Elif; Moral, Emel; Gode, Fethiye; Pehlivan, Erol
    Today, various methods are used to remove the dye pollution in the increasing water. Adsorption is a fast and effective method that has been used since the past. The value of the obtained adsorption capacity varies according to the type of biosorbent material used. The seeds of the fruit of Sophora Japonica (SJfs), a tree commonly found in nature, were pyrolyzed at 450°C to produce biochar (SJfsB) in this study. Iron nanoparticles were immobilized into the SJfsB structure to form a more active biosorbent matrix. The obtained SJfsB and nM-SJfsB were used in the removal of methyl blue, an anionic dye. SJfsB and nM-SJfsB used for dye removal were characterized by FT-IR and SEM instruments. The obtained results revealed that the adsorption process occurred in the pseudo-second-order and was consistent with the Langmuir model. The maximum adsorption capacity for MB removal was 434.783 mg/g for nM-SJfsB and 76.923 mg/g for SJfsB, respectively. © 2022 Published by ISRES.
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    Article
    Citation - WoS: 7
    Citation - Scopus: 10
    Efficient Decolorization of Cationic Dye (malachite Green) by Natural-Based Biosorbent (nano-Magnetic Sophora Japonica Fruit Seed Biochar)
    (Taylor & Francis Inc, 2022) Bayram, Okan; Köksal, Elif; Moral, Emel; Gode, Fethiye; Pehlivan, Erol
    Today, the importance of materials produced by natural means or by synthesis is increasing in the prevention of increasing water pollution. Sophora Japonica fruit seeds (SJfs) were pyrolyzed at 450 degrees C to produce SJfs-biochar (SJfsB) in this study. Iron nanoparticles were immobilized to the SJfsB structure to form a more active biosorbent matrix. SJfsB and the resulting novel biosorbent (nanomagnetic-Sophora Japonica fruit seeds biochar (nM-SJfsB) were used to remove malachite green (MG) from an aqueous solution. Fourier transform infrared analysis (FTIR) and scanning electron microscopy were used to elucidate the details of the biosorbent properties. The effect on removal was investigated using various parameters. A combined strategy was used to define the adsorption parameters such as adsorbent amount, time, initial dye concentration, pH, and temperature. The maximum adsorption capacity determined by the Langmuir model was 51.020 mg/g for SJfsB-MG and 101.010 mg/g was found for nM-SJfsB-MG. The pseudo second order equation made the equilibrium data suitable. After regeneration, nM-SJfsB can be used for re-adsorption studies and reused for multiple cycles in adsorption and desorption applications without discharging nano-iron particles into aqueous medium.
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    Article
    Citation - WoS: 2
    Citation - Scopus: 3
    Rapid Removal of Congo Red From Aqueous Solutions Using Ba2mg(bo3< Investigations Into Kinetics, Thermodynamics and Isotherms
    (Taylor & Francis Ltd, 2025) Bayram, Okan; Moral, Emel; Koksal, Elif; Pekgozlu, Ilhan; Gode, Fethiye; Pehlivan, Erol
    The current study investigates the removal of the toxic Congo red (CR) dye from wastewater using Ba2Mg(BO3)(2). The novel adsorbent with the formula Ba2Mg(BO3)(2) was prepared using a solution combustion process. Several characterisation techniques were used, including FT-IR, SEM-EDX, and XRD. The powder XRD technique was used to analyse the phase of the prepared adsorbent. Five factors were analysed in the experiments: contact time, pH, initial concentration, adsorbent dose, and temperature. The findings indicated that these factors had an impact on the adsorption capacity. The Langmuir, Freundlich, Dubinin&Radushkevich, and Temkin&Pyzhev isotherms models were used to assess the results from experiments on adsorption isotherms. According to the experimental findings, the Langmuir model fits with a maximal adsorption capacity of 1666.667 mg/g for CR. Physical adsorption and electrostatic interaction are thought to be the removal mechanisms based on fitting to pseudo-second-order kinetics model. The adsorption of Ba2Mg(BO3)(2) for CR is physisorption. CR was found to have favourable specific adsorption enthalpy and entropy on Ba2Mg(BO3)(2). With its high adsorption capacity and rapid synthesizability, Ba2Mg(BO3)(2) can be recommended for use in CR removal.