Abatement of Greenhouse Gas Emissions from Ventilation Air Methane (VAM) Using Ionic Liquids: A Review of Experimental Methods and Modelling Approaches

Ventilation Air Methane (VAM) refers to the release of fugitive methane (CH4) emissions into atmosphere during underground coal mining operations. Growing concerns regarding greenhouse effects CH4 have led a worldwide effort in developing efficient and cost-effective methods capturing CH4. Among these, absorption-based processes, particularly those using Ionic Liquids (ILs) are appealing due their advantages over conventional methods. In this study, solubility various ILs, expressed by Henry’s law constant, is first reviewed examining wide range experimental techniques. This followed review thermodynamic modelling tools such as extended model, Pitzer’s Peng–Robinson (PR) equation state, Krichevsky−Kasarnovsky (KK) state well computational (Artificial Neural Network) approaches. The comprehensive analysis presented paper aims provide deeper understanding factors that significantly influence process interest. Furthermore, study provides critical examination recent advancements innovations capture ILs. general, higher selectivity for compared solvents. means ILs can remove more effectively from VAM, resulting purity recovered methane. Overall, offer several solvents after treatment VAM. They selective, less volatile, wider temperature range, chemically stable, be made renewable materials. As result many advantages, becoming increasingly popular sustainable, efficient, safe alternative solvents, they likely continue gaining market share coming years.