How is sodium chloride obtained from seawater, and what process is used to separate it from other salts?

Sodium chloride is obtained from seawater through a process called solar evaporation. Seawater is collected in large, shallow ponds, and the sun’s heat promotes evaporation, leaving behind concentrated brine. As the brine becomes more concentrated, sodium chloride begins to crystallize and precipitate. The crystals are then harvested, and further refining processes, such as washing and recrystallization, may be employed to obtain high-purity sodium chloride. Although other salts are present in seawater, the selective crystallization of sodium chloride allows for its separation, providing a cost-effective and environmentally friendly method to obtain salt from abundant seawater resources.