Browsing by Author "Fil, Baybars Ali"

Now showing 1 - 4 of 4

Adsorption of Methyl Violet Dye a Textile Industry Effluent Onto Montmorillonite-Batch Study
(Taylor & Francis inc, 2014) Aladag, Erdinc; Fil, Baybars Ali; Boncukcuoglu, Recep; Sozudogru, Onur; Yilmaz, Alper Erdem
In this study, methyl violet (MV) dye adsorption from synthetically prepared solutions onto montmorillonite was investigated. Experimental parameters were selected as stirring speed, adsorbent dosage, initial dyestuff concentration, initial solution pH, ionic strength, and temperature. It was determined that adsorption rate increased with increased stirring speed, initial dye concentration, solution pH, ionic strength, and temperature, but decreased with increased adsorbent dosage. The experimental data were analyzed by Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherms, and it was found that the isotherm data were reasonably correlated by Langmuir isotherm. Maximum adsorption capacity of montmorillonite for MV dye was calculated as 230.04 mg g(-1). Pseudo-first-order, pseudo-second-order, Elovich, and intraparticle particle diffusion models were used to fit the experimental data. Pseudo-second-order rate equation provided realistic description of adsorption kinetics. Thermodynamic parameters were calculated as 62.14 kJ mol(-1), 59.55 kJ mol(-1), 51.98 kJ mol(-1), and 0.0242 kJ mol(-1) K-1 for Ea, Delta H*, Delta G*, and Delta S* at 293 K, respectively. The value of the calculated parameters indicated that the physical adsorption of MV on the clay was dominant and the adsorption process was also endothermic. The positive values of Delta S degrees suggest the increased randomness. The positive Delta G degrees value indicated the un-spontaneous nature of the adsorption model.
Adsorptive Removal of Cationic (By2) Dye From Aqueous Solutions Onto Turkish Clay: Isotherm, Kinetic, and Thermodynamic Analysis
(Taylor & Francis inc, 2016) Sozudogru, Onur; Fil, Baybars Ali; Boncukcuoglu, Recep; Aladag, Erdinc; Kul, Sinan
The removal of Basic Yellow 2 (BY2), a cationic dye, from aqueous solution by using montmorillonite as adsorbent was studied in batch experiments. The effect of pH, agitation speed, adsorbent dosage, initial dye concentration ionic strength, and temperature on the removal of BY2 was also investigated. Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherms were applied to fit the adsorption data of BY2 dye. Equilibrium data were well described by the typical Langmuir adsorption isotherm. The maximum monolayer adsorption capacity was calculated as 434.196 mg g(-1) from the Langmuir isotherm model. The adsorption data was fitted to both the pseudo-first-order, pseudo-second-order, Elovich, and intraparticle kinetic models, and the calculated values of the amount adsorbed at equilibrium (q(e)) by pseudo-second-order equations were found to be in good agreement with the experimental values. The thermodynamic factors were also evaluated. The entropy change (Delta S*) was negative, suggesting that the adsorption process decreases in entropy and enthalpy change (Delta H*) was positive which indicates endothermic nature. The positive Delta G* value confirms the un-spontaneity of the process. In addition, a semiempirical model was calculated from kinetic data.
Central Composite Modeling for Electrochemical Degradation of Paint Manufacturing Plant Wastewater: One-step/Two-response Optimization
(Elsevier, 2021) Ozturk, Dilara; Dagdas, Esra; Fil, Baybars Ali; Bashir, Mohammed J. K.
Paint manufacturing wastewaters contain highly toxic and organic biorefractory substances and have adverse effects on human health. In this study, the removal of color and chemical oxygen demand (COD) from a paint manufacturing plant (PMW) wastewater by electrochemical degradation using Ti/Pt anodes were investigated with a five-factor central composite model. pH (4-11), temperature (10-40 degrees C), NaCl concentration (10-100 mM), current (5-15 A) and feed rate (10-40 mL/min.) were selected as independent operating parameters. The results obtained were analyzed with analysis of variance and a quadratic model was developed to examine the effects of parameters affecting degradation conditions. Optimum conditions for maximizing color and COD removal while minimizing energy consumption were determined by numerical optimization and found to be pH of 4, temperature of 39.99 degrees C, NaCl concentration of 100 mM, feed rate of 40 mL/min and current of 5.21 A. Under optimum conditions, the estimated color removal was 79.68% and the COD removal was 80.54%. The compatibility of the predicted optimum conditions was confirmed by experimental data. In experiments performed under optimum conditions, the energy consumed by the system was calculated as 8.51 kWh/m(3) and the operating cost to treat 1 m(3) PMW was determined as $1.02. (C) 2020 Elsevier B.V. All rights reserved.
Comparison of Cationic Dyes (Basic Orange 2, Basic Yellow 2 and Basic Violet 3) Removal From Aqueous Solution Using Clay as an Adsorbent
(Parlar Scientific Publications (p S P), 2019) Farizoglu, Burhanettin; Fil, Baybars Ali; Sozudogru, Onur; Aladag, Erdinc; Kul, Sinan
The present work aims to investigate the removal of three cationic dyes (Basic Orange 2, Basic Yellow 2 and Basic Violet 3) from aqueous solutions by montmorillonite under various experimental conditions. Cationic dyes were selected Basic Orange 2 (BO2), Basic Yellow 2 (BY2) and Basic Violet 3 (BV3). The effects of pH, initial dye concentration, adsorbent dose, agitation speed and ionic strength, on the removal of dyes were studied. According to the experiments results, it was shown, that maximum removal was achieved in less than 45 min. The results indicate that the montmorillonite can be used as a low cost alternative according to other adsorbents in the removal of dyes from wastewater. The maximum adsorption efficiency levels attained were as follows: 95.849% BO2, 99.562% BY2 and 99.169% BV3 onto montmorillonite at pH: 5.0, 100 mg/L initial dye concentration, 0.75g/L clay dosage, 300 rpm agitation speed, 0 M NaCl ionic strength and 293 K, reaction time of 45 min.