الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Sulfate anions represent the most popular impurity in depleted brine cycle during brine purification in chlor-alkali industry. The object of the present work is to study the removal of SO4 -2 from lean brine in chloralkali industry using stirred tank reactor and a Macro porous weak base anion exchange resin Purolite® A830 in relation to the following parameters: 1. PH value of sulfate solution which ranged from 1 to 3. 2. Initial concentration of sulfate solution which ranged from 3000 to 9000 ppm. 3. Speed of rotation of the impeller which ranged from 100 to 500 rpm. 4. Resin dosage which ranged from 550 to 1100 g/l. 5. Contact time The results indicated that the percentage removal of sulfate ion increased as PH value decreased, thus PH=1 reported as the optimum PH value. Furthermore, it was noticed that by increasing initial sulfate concentration, the percentage of sulfate ion removal increased. Another remarkable factor was resin dosage, by increasing amount of resin used, the percentage of removal increased. Moreover, it was found that 200 rpm was the best rotational speed to work on. It was noticed that the data fits Langmuir isotherm model, also kinetic modeling was studied and it was proved that sulfate removal by anion exchange resin could be described by Pseudo Second order Kinetic model.