Revolutionizing Urban Mining: Solvent Extraction for Sustainable Metal Recovery from Electronic Waste

Urban mining offers a transformative solution to the growing challenge of electronic waste (e-waste) by recovering valuable metals sustainably. E-waste is a rich reservoir of critical metals, including lead, indium, gallium, gold, silver, copper, and platinum, which can be effectively extracted using solvent extraction techniques. This method leverages specific solvents to selectively isolate metals, enabling industrial-scale operations with high efficiency. Advanced extractants like calix [4] arene and pseudo calix [3] arene have demonstrated exceptional capability in recovering metals such as lead, indium, and gallium from acidic media (e.g., 0.1 N HCl). Key factors influencing extraction success include solvent selection, solution concentration, and metal composition. Integrating solvent extraction into e-waste recycling minimizes landfill accumulation, reduces environmental impacts, and promotes resource sustainability. By adopting this approach, urban mining not only addresses the environmental burden of e-waste but also advances the circular economy by reclaiming precious metals for future use.