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| Adsorption and Desorption of Resin for Sulfate in FGD with Sodium Citrate Buffer Solution |
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Received:March 08, 2015
Revised:March 12, 2015
Accepted:March 13, 2015
Published Online:July 17, 2015
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| DOI：doi：10.3969/j.issn.1007-7545.2015.08.016 |
| KeyWord:flue gas desulfurization(FGD); citric acid; weak base anion resin; sulfate |
| Author | Institution |
| ZhuHang |
西安建筑科技大学 |
| HongTao |
西安建筑科技大学 |
| GaoMeng |
西安建筑科技大学 |
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| Abstract: |
| D301R, D301G, D370 and D315 weak base anion exchange resins were selected to investigate their effects on desorption of sulfate from desorption lean solution by static method. The effects of adsorption time, citric acid concentration, resin dosage and pH value on sulfate adsorption capacity; desorption time and concentration of alkali liquor on resin desorption; and effect of cyclic regeneration of adsorption and desorption on activity of resin adsorption were analyzed. The results show that D315 resin has bigger effect on desorption of sulfate in high concentration sodium citrate solution (1.0 mol/L). SO42- ions can be completely desorbed within 3 min by concentration of sodium hydroxide of 1.5 mol/L. Adsorption capacity drops by 15% after ten rounds adsorption and desorption recycling. |
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