Rapid Removal of Noxious Nickel (Ii) Using Novel Γ-Alumina Nanoparticles and Multiwalled Carbon Nanotubes: Kinetic and Isotherm Studies Publisher



Agarwal S¹ ; Tyagi I¹ ; Gupta VK¹ ; Dehghani MH^{2, 3} ; Jaafari J^{3, 4} ; Balarak D⁵ ; Asif M⁶
Source: Journal of Molecular Liquids Published:2016

Abstract

Novel γ-alumina nanoparticles and MWCNTs were synthesized for the rapid removal of the noxious nickel (II) from the solvent phase. Hence this study investigated the ability of nano-sized particle in Ni (II) adsorption. The influential parameters including contact time (min), adsorbent dosage (g/L), pH and the initial concentration of Ni (II) were investigated and optimized using the batch adsorption study. The adsorption equilibrium and kinetic data were well fitted and found to be in good agreement with Langmuir and pseudo-second order kinetic model respectively and the maximum Ni (II) percentage removal using MWCNTs and novel γ-alumina nanoparticle was 87.65% and 99.41%, respectively under optimum conditions. The maximum removal of Ni (II) was observed at pH = 10. Upon experimentation, it was observed on increasing the adsorbent dosage and initial concentration the amount of Ni (II) removal efficiency also increased. Finally, it can be concluded that the synthesized nanoparticles can be applied as the best adsorbent to remove the Ni (II) from aqueous solution. © 2016 Elsevier B.V.