Cementation of lead from mono-metallic nitrate solution using a modest-agitated reactor

The cementation of lead from mono-metallic nitrate solution onto iron powder in a modest agitated reactor was investigated in this paper. The influence of several parameters such as initial Pb+2 ions concentration, initial pH of the solution, stirring speed, reaction temperature and mass of iron powder on lead removal were inspected. Analysis of lead cementation kinetics was also performed so as to elucidate the influence of each parameter on the apparent rate constant of the cementation reaction. Eventually, a correlation for predicting the rate constant was obtained by using statistical and least square multivariate regression technique. R-2 of the acquired correlation was 93 %.