Statistical Modelling of Precipitation of Copper Ammonium Sulphite from Synthetic Copper Sulphate Solutions

Copper ammonium sulphite was precipitated under conditions by passing SO2 from a Synthetic aqueous,copper sulphate:solution. Copper ammonium sulphite Cu2SO3 center dot(NH4)center dot SO3, was characterised by XRD., The effects of parameters such concentration, pH 1 stirring speed and reaction, time were investigated on precipitation A first order model was obtained,using the 2 full factorial design method., It was observed that all parameters on the precipitation Of copper;ammonium sulphite were effective. The optimum conditions established for Maximum copper precipitation at room temperature were stirring speed 700 rpm inital concentration 0.8 moI L-1, pH 35 and reaction time 15 min: Under these optimum coditions,, the,percentage, of precipitated copper from solution was 99.80