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All that glitters is not gold: Selective recovery of value metals

Research Area: Chemistry, colloid and interface science, electrochemistry and nanotechnology

Supervisors: Prof Thomas Nann, Prof Jonas Addai-Mensah, A/Prof Dusan Losic and Prof Bill Skinner

Description: Value metals such as noble or transition metals (Au, Cu, Ni, Ag etc.) are conventionally leached from mineral matrices by irrigation of ground minerals with appropriate lixiviants (acidic or alkaline leaching solutions). Selective separation and/or purification of such metals in solutions can be achieved by using customised chemical reagents (e.g., complexants), special adsorbents and electrochemical deposition methods suitable for single metal solutions. For multi-component valuable metal systems, however, these treatment approaches are either costly (special chemicals required) or inefficient. To date, a more selective and economically competitive method for leaching and selective separation and recovery of pure metals of high value is still lacking for multi-component systems.

We will develop a new, nano-structured material-based electrochemical approach to separate multi-component value metal solutions. Nano-structured materials offer many interesting properties that cannot be found in equivalent bulk materials (mesoscopic properties). We will exploit mesoscopic properties to realise a nano-structured electrode for the selective recovery of value metals from leaching solutions

 The following methods will be used within this project:

This project is of high industrial value. Therefore, confidentiality and willingness to interact with industry are pre-requisites.

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