REMOVAL OF LEAD IONS BY NIFE2O4 NANOPARTICLES

Abstract

Nickel ferrite nanoparticles have been prepared by polymeric precursor method. The nanoparticles application in the removal of lead ion was investigated. The results showed that the adsorptive properties were dependent on pH, duration and temperature. Highest percentage (99%) lead adsorption was observed under basic condition at room temperature during 1 h stirring. Analysis of lead adsorbed nickel ferrite by powder XRD, FTIR and XPS techniques revealed the adsorption took place based on hydroxide mechanism. The lead salt formed on the surface of the ferrite powder was identified to be lead carbonate and lead hydroxy carbonate at pH 7 and 9 respectively.