Abstract
The adsorption of Cibacron Brilliant Yellow (CBY) 3-GP dye onto TiO2 Degussa, Fe2O3, and TiO2 anatase/Diphenylcarbizide in aqueous solution was studied with respect to temperature, contact time, and pH. The CBY 3-GP adsorption at equilibrium increased as the initial dye concentration increased for TiO2/DPC, while it decreased for TiO2 Degussa; however, it increased the initial dye concentration. The best removal efficiency was obtained at 1 mg for TiO2/DPC, TiO2 Degussa, and the amount of adsorption decreases with the rising of temperature. The negative ΔH° reveals the adsorption is exothermic and extremely negative ΔS° for TiO2 Degussa. The negative value for ΔS° indicates a regular increase of the randomness at the TiO2/DPC and Fe2O3 solution interface during adsorption. The intraparticle diffusion, pseudo-first- and second-order kinetic models were used. The Langmuir, Temkin, Freundlich, and Dubbin adsorption models were examined to describe the equilibrium isotherms. The usage of TiO2 Degussa and TiO2/DPC indicates that the equilibrium sorption was favorable.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
