Comparison of Pb2+ Removal Efficiency by Zero Valent Iron Nanoparticles and Ni/Fe Bimetallic Nanoparticles

In this study, synthesized bimetallic ni/fe nanoparticles and zero-valent iron nanoparticles (nzvi) were investigated for remediation of pb2+ against the effect of various parameters such as ph, volume to mass (v/m) ratio, contact time, initial concentration of pb2+ on removal efficiency. results of the present project suggest both ni/fe bimetallic nanoparticles and nzvi adsorbents have shown maximum removal of pb2+ at ph 5 with an increasing trend with increasing ph. the v/m ratio optimization study reveals that the same volume of the lead solution requires more ni/fe bimetallic nanoparticles than nzvi. the time to achieve equilibrium is same in both the cases. similarly, decrease in the removal efficiency with increase in initial concentration of pb2+ is observed in both the cases