1Previously Postgraduate Student, Department of Civil Engineering, B.M.S. College of Engineering, Bangalore, India
2Department of Civil Engineering, B.M.S. College of Engineering, Bangalore-560018, India
3Department of Chemistry, M.S. Ramaiah Institute of Technology, Bangalore-560054, India
4Presently with Honda Motors, Kolar, India
Online published on 24 October, 2017.
Applicability of nickel-oxide nanoparticles for the selective removal of heavy metals from synthetic metal solutions was investigated. An average size of 26 nm were synthesized using lemon juice extract as fuel by solution combustion method and characterized by X-Ray diffraction, SEM and FTIR. Batch experiments were conducted to determine adsorption kinetics and mechanisms of Cr (VI), Cu (II) and Ni (II). The adsorption process was found to be highly pH dependent. Data were well defined with Langmuir isotherms. Adsorption mechanisms were found to follow pseudo second order for Cr (VI), Cu (II) and Ni (II).
Nickel-oxide nanoparticles, solution combustion method, heavy metal removal, adsorption kinetics, adsorption isotherms
