1.1WEEE Recycling Systems 1.2Supply and Demand of Typical Critical Metals in Electrical and Electronic Equipment 1.3WEEE Generation 1.4Critical Metals Recycling 1.5Recovery of Precious Metals from E-waste 1.6Integrated Process for Recycling Copper Anode Slime from Electronic Waste Smelting References Chapter 2Recovery of Platinum Group Metals from Spent Petrochemical Catalysts 2.1Spent Reforming Catalysts 2.2Platinum Recovery Optimization by Using Response Surface Methodology 2.3Leaching of Palladium through Oxidation with Fe3 2.4Slag Design and Optimization for Iron Capturing of PGMs from Alumina-based Spent Catalysts References Chapter 3Recovery of Ni, Mo, V, Co from Spent Hydrogenation Catalysts 3.1Characterization of Spent Hydrogenation Catalysts 3.2Hydrometallurgical Processes 3.3Alkali Roasting Followed by Leaching Methods 3.4Pyrometallurgical Processes 3.5Enrichment of NiMoV Via Pyrometallurgical Reduction References Chapter 4Recovery of Platinum, Palldium and Rhodium from Spent Automotive Catalysts 4.1Pyrometallurgical Process 4.2Hydrometallurgical Process 4.3Advantages and Environmental Impacts of Recycling Technologies 4.4Recovery of Platinum, Palladium, and Rhodium Via Iron Melting Collection 4.5Highly Porous Ceramics Production Using Slags from Smelting of Spent Automotive Catalysts 4.6Process and Mechanism of Electrolytic Enrichment of PGMs from Fe-PGMs Alloy References Chapter 5Separation and Purification of Platinum Group Metals 5.1Liquid-liquid Extraction 5.2Membranes Separation Technique 5.3Supercritical Fluids Technique 5.4Solid-phase Extraction 5.5Other Separation Technologies 5.6Industrial Processes 5.7Recommendations for Future Research References Chapter 6Recovery of Rare Earth Elements from Waste Fluorescent Powders 6.1Recovery of Rare Earth Elements by Dual Hydrochloric Acid Dissolution 6.2Complete Recovery of Eu from BaMgAl10O17:Eu2 by Alkaline Fusion 6.3Mechanism and Kinetics of The BaMgAl10O17:Eu2 Alkaline Fusion Reaction 6.4Mechanism of CeMgAl11O19: Tb3 Alkaline Fusion with Sodium Hydroxide 6.5Alkaline Fusion Mechanism for Aluminate Rare Earth Phosphor: Cation-oxoanion Synergies Theory References Chapter 7Recovery of Critical Metals from Spent Lithium-ion Batteries 7.1The Recycling Policies 7.2The Recycling Status 7.3Recovery of Critical Metals from Spent Ternary LIBs 7.4Recovery of Li from Spent LFP Battery References Chapter 8Recovery of Critical Metals from Spent Solar Photovoltaic Modules 8.1Recycling Technologies of Spent Silicon Photovoltaic Panels 8.2Recovery of Critical Metals from Spent Thin Film Photovoltaic Panels References