Increasing NaCl Concentration by using Precipitation and Filtration Process at Optimum Temperature

Abstract

The sodium chloride salt or (food salt) is commonly used for consumption in our homes, as well as a raw material in industries and laboratories. The quality of this salt mainly depends on the sodium chloride concentration. The aim of this research is to obtain an optimum condition in production of NaCl industrial salt by using sedimentation and filtration process in order to achieve high concentration of industrial salt. The research has been conducted in two parts, mathematical calculations by mathematical models and experiment process by mixing the stearic acid with NaOH solution to produce the sodium stearic and the solution has been mixed with sea water, then the white solid was emerged, there are a calcium stearic and magnesium stearic. The final step is the filtration of evaporated mixture to obtain the intended salt concentration. Results obtained indicate that both result data are approximately identical with small deviation. The maximum concentration obtained of NaCl is 95% at optimum temperature of 83 oC.