Studies on the
application of Zirconia nanoparticles for the removal of heavy metal (Pb (II)) from
the aqueous solution
Prabha N., Jayapriya G. and Vennila M.
Res. J. Chem. Environ; Vol. 26(7); 57-63;
doi: https://doi.org/10.25303/2607rjce057063; (2022)
Abstract
In this present study, Zirconia nanoparticles (nanosorbent) have been prepared by
both chemical and green methods. The nano sorbent was characterized by X-ray diffraction
(XRD), Scanning Electron Microscopy (SEM) - EDAX and FT-IR techniques. The XRD data
revealed the mean crystalline sizes of adsorbent. The surface morphology of adsorbent
was studied by SEM. Removal of lead (II) was studied by adsorption of nano sorbent.
An unadsorbed lead concentration was found using complexometric titration against
standard EDTA with EBT as an indicator.
The factors such as dosage, pH and concentration of Pb (II) were examined to find
the efficiency of the process. Adsorption isotherms such as Freundlich and Langmuir
isotherm models confirm that the reaction is spontaneous one. Kinetic studies proves
that it follows Pseudo-second order kinetic model and was found to be the best fitted
model.
