Dear Colleagues,

Heavy metals are raw materials employed in numerous industrial processes. Their demand in the modern world is increasing exponentially owing to their extensive use in electronics and other manufactured products. However, heavy metals are one of the major pollutants in the industrial waste waters. Therefore, metal removal from wastewater and metal recovery from readily available products are important and timely concern. Various methods have been developed to achieve heavy metal removal from wastewater, such as ion exchange, reverse osmosis, chemical precipitation, solvent extraction, and membrane processes. However, these methods are expensive, tedious, and cause secondary pollution, which limits their industrial application. Many scientific studies have been conducted for the recovery of metals from wastes including sludges, slags, fly ashes, shales, spent catalysts, and spent liquors; industrial-scale treatments units have also been developed recently.

This Special Issue focuses on innovative trends in heavy metal removal/recovery using advanced materials, reagents, and technologies that respect environmental and economic requirements over the world. Additionally, composition and properties of used materials, experimental conditions, and mechanisms of the studied processes and efficiency are of interest.

Prof. Dr. Jei-Pil Wang
Guest Editor

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• heavy metals
• wastes
• recovery
• removal