학술논문
SYNTHESIS AND CHARACTERIZATION OF CADMIUM SULFIDE NANOPARTICLE–LOADED ACTIVATED CARBON AS A NOVEL ADSORBENT FOR EFFICIENT REMOVAL OF REACTIVE ORANGE 12.
Document Type
Article
Source
Subject
*CADMIUM sulfide synthesis
*NANOPARTICLES
*ACTIVATED carbon
*SORBENTS
*REACTIVITY (Chemistry)
*AQUEOUS solutions
*SCANNING electron microscopy
*FREUNDLICH isotherm equation
*THERMODYNAMICS
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Language
ISSN
0098-6445
Abstract
The objective of this study was to evaluate the adsorption potential of cadmium sulfide nanoparticle–loaded activated carbon (CdSN-AC) for removal of reactive orange 12 (RO-12) dyestuffs from aqueous solutions. The characterization of CdSN-AC was performed by X-ray diffraction (XRD), transmission electron microscopy (TEM), and field emission scanning electron microscopy (FESEM) techniques. The effects of experimental parameters such as initial solution pH, contact time, initial RO-12 concentration, amount of CdSN-AC, and temperature on the adsorption process were evaluated in detail. The kinetic studies indicated that the adsorption process was best described by the pseudo-second-order kinetics model. The experimental data were analyzed by the Langmuir, Freundlich, and Tempkin isotherm models, and the monolayer adsorption capacity of CdSN-AC was found to be 150.0 mg g−1by using the Langmuir isotherm model. The thermodynamic parameters indicated that the adsorption of RO-12 onto CdSN-AC was feasible, spontaneous, and endothermic in nature. [ABSTRACT FROM AUTHOR]