The quest for sustainable solutions to address plastic waste has led to innovative techniques such as solvent-assisted separation and extraction. This paper explores recent advancements in the field of polymer purification through solvent-based methods. By leveraging the unique solubility properties of different polymers, these techniques enable efficient separation and extraction of plastics from complex waste streams. We discuss key principles, methodologies, and emerging trends in solvent-based plastic purification, highlighting their potential for mitigating environmental pollution and promoting circular economy practices.