Rotten Eggs Revaluated: Ionic Liquids and Deep Eutectic Solvents for Removal and Utilization of Hydrogen Sulfide

Hydrogen sulfide (H2S) is highly toxic and one of the problematic impurities in industrial gas streams, calling for H2S removal down to single-digit ppm levels protect health environment, not harm downstream processes. Here, we discuss recent developments challenges current technologies. Furthermore, present a comprehensive review ionic liquids (ILs), IL-based solvents/adsorbents/membranes, deep eutectic solvents (DESs) due their unique advantages. We analyze theoretical studies better understand microscopic details behind removal. new research on IL/DES-based processes from an perspective. Finally, summarize utilization systems recovery sulfur hydrogen, synthesis value-added chemicals. This will provide both general in-depth knowledge achievements, difficulties, priorities developing novel ILs/DESs efficient sustainable utilization.