Effect of Purification on Sodium Chloride produced from Seawater Based on Solar Evaporation

Abstract

The aims of this study were to evaluate the raw salt (Sodium Chloride (NaCl)) manufactured at Port Sudan and to find the effect of purifying this raw salt to conform with the international and Sudanese standards for table salt. Samples were taken from two factories: Baboud and Rwaia which produce raw salt. The samples were analyzed to determine their quality. The samples were then treated in the laboratory by washing with saturated solution of pure NaCl to remove the impurities i.e. SO42-, Ca+2, Mg+2, CO32-, CL— etc. The treated samples were analyzed and the results revealed that washing of the raw salt with brine must be adapted for the salt produced in Port Sudan at different factories for it is contaminated with elements that make it not conforming with the standard.