Deniz Bingöl | Kocaeli University (original) (raw)
Papers by Deniz Bingöl
Biomass Conversion and Biorefinery
Separation Science and Technology
Sustainable Chemistry and Pharmacy
International Journal of Environmental Analytical Chemistry
Biological Trace Element Research
International Journal of Environmental Analytical Chemistry
International Journal of Environmental Analytical Chemistry
Separation Science and Technology
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
DESALINATION AND WATER TREATMENT
Journal of Cleaner Production
Cumhuriyet Science Journal
Process Safety and Environmental Protection
SAÜ Fen Bilimleri Enstitüsü Dergisi
Journal of Inorganic and Organometallic Polymers and Materials, 2016
Chemical Engineering Research and Design, 2016
In this study, the role of optimized Jeffamine/diamino hexane reduced cryogel for Cu(II) ion remo... more In this study, the role of optimized Jeffamine/diamino hexane reduced cryogel for Cu(II) ion removal from aqueous solutions was investigated. The synthesized adsorbent was characterized by means of FT-IR, 13C-NMR, SEM-EDX and compression techniques. Maximum adsorption for Cu(II) ions was obtained at pH 5.5. The impact of several operating parameters such as metal ion concentration, adsorbent dosage, and temperature were elucidated and optimized by central composite design model of response surface methodology. Maximum adsorption capacity was determined as 119.13 mg/g at obtained optimum experimental conditions of initial Cu(II) ion concentration (100 mg/L), adsorbent dosage (80 mg) and temperature (55 °C). The isotherm and kinetic data revealed that the Langmuir and pseudo 2nd-order models to be in good agreement with the experimental data. Evaluation of adsorption mechanism by intra-particle diffusion and Boyd model suggested that particle diffusion was the rate limiting step for Cu(II) ion uptake and was mainly due to external mass transport. Thermodynamic parameters Gibbs free energy (ΔG°) and enthalpy (ΔH°) confirmed the spontaneity and endothermicity of the adsorption process. Theoretical calculations suggested that both physisorption and chemisorption were active processes. Performed consecuitive four cycles also show that the cryogel is a good alternative with high reusability and cost-friendly properties. Keywords: Central Composite Design; Cryogel; Diamino hexane; Jeffamine; Optimization; Reductive amination
SAÜ Fen Bilimleri Enstitüsü Dergisi, 2016
Biomass Conversion and Biorefinery
Separation Science and Technology
Sustainable Chemistry and Pharmacy
International Journal of Environmental Analytical Chemistry
Biological Trace Element Research
International Journal of Environmental Analytical Chemistry
International Journal of Environmental Analytical Chemistry
Separation Science and Technology
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
DESALINATION AND WATER TREATMENT
Journal of Cleaner Production
Cumhuriyet Science Journal
Process Safety and Environmental Protection
SAÜ Fen Bilimleri Enstitüsü Dergisi
Journal of Inorganic and Organometallic Polymers and Materials, 2016
Chemical Engineering Research and Design, 2016
In this study, the role of optimized Jeffamine/diamino hexane reduced cryogel for Cu(II) ion remo... more In this study, the role of optimized Jeffamine/diamino hexane reduced cryogel for Cu(II) ion removal from aqueous solutions was investigated. The synthesized adsorbent was characterized by means of FT-IR, 13C-NMR, SEM-EDX and compression techniques. Maximum adsorption for Cu(II) ions was obtained at pH 5.5. The impact of several operating parameters such as metal ion concentration, adsorbent dosage, and temperature were elucidated and optimized by central composite design model of response surface methodology. Maximum adsorption capacity was determined as 119.13 mg/g at obtained optimum experimental conditions of initial Cu(II) ion concentration (100 mg/L), adsorbent dosage (80 mg) and temperature (55 °C). The isotherm and kinetic data revealed that the Langmuir and pseudo 2nd-order models to be in good agreement with the experimental data. Evaluation of adsorption mechanism by intra-particle diffusion and Boyd model suggested that particle diffusion was the rate limiting step for Cu(II) ion uptake and was mainly due to external mass transport. Thermodynamic parameters Gibbs free energy (ΔG°) and enthalpy (ΔH°) confirmed the spontaneity and endothermicity of the adsorption process. Theoretical calculations suggested that both physisorption and chemisorption were active processes. Performed consecuitive four cycles also show that the cryogel is a good alternative with high reusability and cost-friendly properties. Keywords: Central Composite Design; Cryogel; Diamino hexane; Jeffamine; Optimization; Reductive amination
SAÜ Fen Bilimleri Enstitüsü Dergisi, 2016