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

Abstract

Obtaining copper compounds from aqueous solutions is widely realized with a chemical reaction. They have been produced from aqueous solutions through various technologies. These methods are electrowinning, reduction, segmentation, flotation and the electrolytic extraction process, etc. 1-4. Copper sulphites are of considerable interest in chemistry. Precipitation of mixed valence metal sulphates such as copper ammonium sulphite is important to obtain metals. The mixed valence copper sulphite, Cu2SO3•Cu SO3•2H2O, Cu2SO3•(NH4)2SO3 is a model compound characterizing the sulphite structure. This structure indicated that solid metal sulphites and sulphite complexes in solution may play a role as intermediates in various chemical processes. Thus, metal sulphites have been explained as used model compounds in the reactions. For instance, the structures of sulphite ion coordination have strongly influenced the course of the thermal decomposition stable up to 200 °C. At the same time, recovery of the precipitation of this complex compound has formed a key stage in the hydrometallurgical processes 5,6. Some studies on the performance of copper ammonium sulphite and the factorial design method in this study were found in the literature. Çolak et al. 7 precipitated as sulphites to produce copper powders from its impure solutions. Copper(I) sulphate solutions were prepared by utilizing these sulphites. The copper powders were produced by thermal disproportionation of copper(I) sulphate at 60 °C and 175 mm