The aim of The 3rd International Congress on Separation and Purification Technology (ISPT 2026) is to provide a forum for global leading researchers, scientists and engineers in academia, national laboratories, industry, and representatives of government organizations, to present and discuss their latest developments on Separation and Purification Technology. The conference scope will include novel methods for separation and purification in chemical and environmental engineering for homogeneous solutions and heterogeneous mixtures. This includes any separation and/or purification of liquids, vapors, and gases, with the exception of methods intended for analytical purposes.