A Special Issue of Metals was commissioned that devoted to aspects Mineral Processing and Hydrometallurgy [...]

Ionic liquids, low temperature molten salts, have various advantages manifesting themselves as durable and environmentally friendly solvents. Their application is expanding into various fields including hydrometallurgy due to their unique properties such as non-volatility, inflammability, low toxicity, good ionic conductivity, and wide electrochemical potential window. This paper reviews previo...

Abstract This paper reviews the properties of methanesulfonic acid (MSA) and its potential for use in hydrometallurgy. Although MSA is much less known than sulfuric, hydrochloric or nitric acid, it has several appealing that makes very attractive development new circular flowsheets Unlike other organic acids such as acetic a strong ( pK = ? 1.9). In addition, stable against chemical oxidation r...

Abstract In this academic position paper, we propose the 12 Principles of a novel and more sustainable approach to hydrometallurgy that call “circular hydrometallurgy.” The paper intends set basis for identifying future areas research in field hydrometallurgy, while providing “sustainability” benchmark assessing existing processes technological developments. Circular refers designing energy-eff...