Synthesis of Nano-Titanium Tannate as an adsorbent for Crystal Violet Dye, Kinetic and Equilibrium Isotherm Studies
نویسندگان
چکیده
The purpose of this study was to prepare nano-titanium tannate complex (TTC) and to investigate its adsorption capacity for removal of cationic dyes such as crystal violet (CV) dye. The morphology and the main elements of TTC adsorbent were characterized by scanning electron microscopy (SEM-EDS), while its crystal structure was characterized by X-ray diffraction (XRD). Also, FT-IR spectroscopy study structural aspects of TTC. A “cotton-ball”-like and porous surface structure of titanium tannate complex (TTC) with nanoparticle size of 16.18 nm show high capability for absorbing crystal violet dye. The effect of several parameters such as contact time, initial concentrations of CV, solution pH and the amount of TTC was investigated. Three different kinetic equations such as pseudo-first order, pseudo-second order and intraparticle diffusion were used to study the order and the mechanism of the adsorption process. The adsorption of CV dye followed pseudosecond order equation. Moreover, equilibrium data were tested with four adsorption isotherm models namely, Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D-R). Langmuir was the best fit for the data with maximum capacity as 58.8 mg/g. The results of Separation factor, Surface coverage and standard free energy (∆G ̊) indicated that adsorption of CV onto TTC was favorable with fast rate and spontaneous physical adsorption process.
منابع مشابه
Adsorption of Crystal Violet Dye from Aqueous Solutions onto Low-Cost Untreated and NaOH Treated Almond Shell
In the present study, comparative batch adsorption of basic dye namely Crystal Violet (CV) using the almond shell as an adsorbent in untreated form and activated with sodium hydroxide was carried out in search of optimum adsorption conditions. The operation parameters investigated was contact time (10 to 80 min), initial dye concentrations (40-240 mg/L), temperature, (20-5...
متن کاملApplication of Magnetic-modified Fe3O Nanoparticles for Removal of Crystal Violet from Aqueous Solution: Kinetic, Equilibrium and Thermodynamic Studies
The prepared magnetic-modified Fe3 O4 nanoparticles (Fe3 O4 -TAN) were used as adsorbent for removal of crystal violet (CV) from water solution. The effects of pH, contact time, dye concentration and temperature on adsorption were determined. The experimental data were analyzed using the Langmuir adsorption model. The data fitted well to the model with maximum adsorption capacities 84.0 mg/gund...
متن کاملKinetic and Equilibrium Studies on the Adsorption of Crystal Vio-let Dye Using Leucaena Leucocephala (Subabul)Seed Pods as an Adsorbent
متن کامل
Removal of Congo Red Anionic Dye from Aqueous Solution Using Polyaniline/TiO2 and Polypyrrole/TiO2 Nanocomposites: Isotherm, Kinetic, and Thermodynamic Studies
The present study seeks to investigate the capacity of polyaniline/titanium dioxide (PAn/TiO2) and Polypyrrole/titanium dioxide (PPy/TiO2) nano-adsorbents to adsorb Congo red anionic dye (CR) from aqueous solution. The variables effective in CR adsorption, including adsorbent dose, pH of the solution, contact time, initial dye concentration, and temperature were examined. The study yielded the ...
متن کاملRemoval of Crystal violet Dye from Aqueous Solution Using Surfactant Modified NiFe2O4 as Nanoadsorbent; Isotherms, Thermodynamics and kinetics Studies
The removal of crystal violet from aqueous solution by NiFe2O4 magnetic nanoparticles treated with sodium dodecyl sulfate was investigated. The modified magnetic nanoparticles were prepared by chemical reaction of a mixture of Ni+2 and Fe+3 ions mixture in aqueous solution at the presence of ammonia and then sodium dodecyl sulfate was utilized as an ionic surfactant to modified the obtained mag...
متن کامل