Development of High- Performance Polymerbased Mixed Matrix Membranes for Water Purification / Subhan Mahmood / FA21-RCH-003

Abstract

Water is the prime source of survival on earth. Its recycling and preservation must be addressed properly. The presence of biological contaminants like virus and bacteria’s make water sources highly vulnerable to use. Other than biological pollutants, presence of various inorganic salts and oil in water also makes it almost impossible to be used both for domestic and industrial purposes. So, there is a strong urge between researchers to find efficient methods that can remove both type of contaminants. Scientists have tried to solve this problem of recycling by applying different methods. Among various technologies used for removal of toxic pollutants from water, membrane technology has gained the most attention due to the inherent advantages This research thesis aims to develop high-performance mixed matrix membranes for water purification by integrating Magnesium Stearate into polymer matrices (PES). Conventional polymeric membranes face challenges concerning their selectivity, permeability, and stability under extreme conditions. This study explores the impact of different concentrations of Magnesium Stearate on the membrane's morphology, transport properties, and stability. The performance assessment of the synthesized membranes is based on water flux, pollutant rejection efficiency, and long-term stability under diverse operating conditions. The research findings reveal that the incorporation of Magnesium Stearate significantly enhances the membrane's performance, particularly in rejecting Dyes and Salts; 100% Dye Rejection (Congo Red) and maximum of 71% Salt Rejection (Calcium Chloride) has been achieved with the formed membrane. Additionally, the developed mixed matrix membranes demonstrate exceptional stability under harsh conditions, including high pH, and pressure. Ultimately, this research provides compelling evidence for the potential of polymer-based mixed matrix membranes as a cost-effective and efficient technology for water treatment applications.