Recycling & Purification process and multiscale modelling. The functionalized MNPs will be utilized in order to remove contaminants from plating baths. The process will take place in situ and will consist of two steps. The first step concerns the treatment of the bath with the suitable functionalized MNPs in the plating tank and second the removal/separation of the particles from the plating solution. The process will be supported and validated by multiscale modelling to evaluate the operational conditions of the purification procedure.