Recovery of Rare Earth Elements from Hard Disk Drives: Technologies, Challenges, and Circular Economy Perspectives

Antonio Clareti Pereira* PhD in Chemical Engineering Federal University of Minas Gerais – UFMG, Department of Chemical Engineering Belo Horizonte – MG – Brazil DOI: 10.5281/zenodo.19068704 Rare earth elements (REEs), especially neodymium (Nd), praseodymium (Pr), and dysprosium (Dy), are crucial Read More …

Recovery and Recycling of Spent Ni–Mo–V Catalysts: Technologies, Environmental Drivers and Circular Economy Perspectives

Antonio Clareti Pereira, Ph.D.* Department of Graduate Program in Materials Engineering Federal University of Ouro Preto (UFOP) Ouro Preto, MG, Brazil DOI: 10.5281/zenodo.18838023 Spent nickel–molybdenum–vanadium (Ni–Mo–V) sulfide catalysts are widely used in hydrotreating, hydrodesulfurization and residue-upgrading units across the global Read More …

Antimony Hydrometallurgy from Primary and Secondary Sources (2020–2025): Critical Review of Leaching Systems and Downstream Separation

Antonio Clareti Pereira* Ph.D. in Chemical Engineering, Federal University of Ouro Preto (UFOP) – Department of Graduate Program in Materials Engineering, Ouro Preto, MG, Brazil. DOI: 10.5281/zenodo.18176967 Antimony (Sb) is a critical element with growing strategic importance, yet its hydrometallurgical Read More …

Mining Waste Valorization for Construction Materials: A Systematic Review of Technologies, Environmental Performance, and Circular Economy Perspectives (2010–2025)

Antonio Clareti Pereira* PhD in Chemical Engineering Federal University of Minas Gerais – UFMG, Department of Chemical Engineering Belo Horizonte – MG – Brazil. DOI: 10.5281/zenodo.17682185 The ongoing production of mining waste worldwide presents significant environmental and technical challenges due Read More …