Abstract
AbstractAdsorption of reactive blue 19 (RB19) dye onto NiO nanoparticles was investigated at various NiO dosages, dye concentrations, solution pHs, contact times, and temperatures in a batch system. Analysis of the adsorption data indicated that the adsorption process follows the pseudo-second-order kinetics and the adsorption equilibrium data fit to Langmuir–Freundlich (Sips) isotherm better than the Freundlich and Langmuir isotherm models. Evaluation of the thermodynamic parameters (∆G°, ∆H°, and ∆S°) revealed that the adsorption process is spontaneous, endothermic, and feasible. This study suggested NiO nanoparticles as effective adsorbents for removing RB19 from polluted water.
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