Abstract
The importance of solid–liquid interfaces in separation and purification processes is very well documented and a number of analytical and instrumental methods were developed for better understanding of interfacial interactions. Separation and purification are considered the final stages of metal recovery. These stages can greatly impact the overall performance of the extraction process in cases where the underlying chemical and electrochemical interactions are not well controlled. This chapter deals with current separation technologies where solid–liquid interfaces are relevant including leaching of metals, adsorption on solids and magnetic materials, electroflotation, electrocoagulation and electrowinning. Emerging technologies such as magnetic solid phase extraction and its application in separation processes has been briefly described.
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