Innovative Recycling of Saline Bittern for Soda Ash Synthesis: A Pathway to Green Chemistry in Industrial Applications

Abstract The synthesis of Na 2 CO 3 using saline bittern solutions presents a promising approach to addressing environmental challenges in the soda industry. This involves the development of resource‐efficient, low‐waste technologies that focus on recycling valuable waste components. Sodium sulfate, chemically deposited, and possessing specific physical and chemical properties, serves as a key raw material. The optimal conditions for producing magnesia were achieved using 5% NaOH at a pH of 12.4. Sodium sulfate (Na 2 SO 4 ), the primary material for soda ash production, was obtained by cooling the filtrate of a magnesium‐free bittern solution. Multiple fusion tests were conducted to achieve a high‐purity product. The resulting magnesia and soda ash were verified through XRD and EDX analyses. Kinetic data indicated that the leaching process follows a shrinking‐core model, with an apparent activation energy of 22.91 kJ/mol. The low activation energy suggests that the leaching rate is chemically controlled, supporting the experimental findings.