离子交换法从糖蜜中吸附氯的实验研究

Experimental Research on Adsorption of Chlorine from Molasses Solution with Ion Exchange

糖蜜是制糖业的副产品,可做为软锰矿生产电解锰的还原剂,但是糖蜜中含有的氯离子限制了其应用。采用静态和动态实验方法,选用大孔阴离子树脂对糖蜜中的氯离子进行了吸附实验研究,结果表明,树脂对Cl-具有良好的吸附性能和解吸效果,在氯离子含量为12.2 g/L的条件下,对氯的吸附容量为121 mg/g湿树脂,氯离子的解吸剂为1.0 mol/L的稀硫酸,解吸率可达95.4%。经过工业化试验,糖蜜中氯离子脱除率为84%。

Molasses is a by-product of the sugar industry, it could be used as reducing agent in production of electrolytic manganese by pyrolusite, but the chloride ion has limited its application. Using static and dynamic experimental methods, macroporous anion resin was carried out as experimental study on adsorption of chloride ion in molasses. The results showed that the resin had good adsorption and desorption effect on Cl-, under the condition of the chloride ion content of 12. 2 g/L, the adsorption capacity of the resin could reach 121 mg/g wet resin, the loaded resin could be eluted with 1. 0 mol/L dilute sulfuric acid, the elution rate was 95. 4%. After the industrial test, molasses chloride removal rate reached 84%.