Solvent regeneration can be achieved through several methods, including: - Distillation: This is one of the most common methods where the solvent is heated until it vaporizes and then condensed back into a liquid form, leaving impurities behind. - Adsorption: In this method, impurities are removed by passing the solvent through a material that adsorbs the unwanted substances. - Membrane Filtration: This involves passing the solvent through a membrane that selectively allows the solvent molecules to pass while blocking impurities. - Chemical Treatment: This involves adding chemicals that react with impurities, making them easier to separate from the solvent.