Ion flotation is an efficient separation technique for the recovery of metal ions from dilute aqueous solutions. Provided that both collected and surfactant are recovered foam phase, it could be considered as alternative to ion exchange, adsorption or solvent extraction in hydrometallurgy. However, most studies focusing only on by neglect development a closed-loop flow sheet with regeneration c...

For a large amount of spent lithium battery electrode materials (SLBEMs), direct recycling by traditional hydrometallurgy or pyrometallurgy technologies suffers from high cost and low efficiency even serious secondary pollution. Therefore, aiming to maximize the benefits both environmental protection e-waste resource recovery, applications SLBEM containing redox-active transition metals (e.g., ...

In recent years, critical and secondary raw materials (CRMs SRMs, respectively) have received great interest within the circular economy model. this work, mycorrhizal-assisted phytomining (MAP) system, composed of Helianthus annuus–arbuscular mycorrhizal fungus Rhizophagus intraradices–Zn-volcanic ashes, was applied in bioreactors for recovery CRMs (Sr, P) SRMs (Cr, Zn, Cu, Mn, Rb, Ni) from min...

<p style='text-indent:20px;'>Iron removal by goethite is a key procedure in zinc hydrometallurgy. Due to its complex chemical reaction mechanism, multiple reactors cascade, and high uncertainty, it difficult optimize control industrial process. In this paper, distributed optimization method which based on novel hybrid model of the iron process proposed. By combining mechanism data-driven ...

There are no appreciable amounts of nickel resources in Iran; therefore, secondary resources of this element are to be more considered in future. Spent nickel catalysts that are used in various industrial processes are one of them. For example nickel catalyst that is used in hydrogenation of edible oil have large amounts of nickel and they are generally supported on porous materials like silica...

The extraction of nickel (Ni) from sulfide resources commences with flotation to produce a concentrate which is then smelted nickel-enriched phase called matte, and further refined pure Ni products as well by-products, such cobalt (Co), copper (Cu) precious metals. However, the traditional smelting-matte refining process, whilst technologically robust, capital intensive suffers several environm...