Studied of impact ZGC108 resin penetration exchange capacity factors through single factor experiment. The orthogonal test obtained the best optimum conditions were; velocity 1. 2 mL/min, concentration 9. 45 g/L, temperature 298 K and columns filling height 14 cm . At the above condition, the penetrable capability was 52. 98 mg/mL. Variance analysis showed the order of the impact to the penetrating capacity were : velocity > temperature >concentration > height of resin. The velocity and temperature were significant. At the condition of 6BV eluant to resin bed, flow rate 3BV/h , temperature 298 K, 0. 2 mol/L,0. 4 mol/L,0. 6 mol/L of Sulfuric acid used as the eluant,the K~+ eluting were 53. 4% ,78. 6% ,98. 6% respectively; at temperatures 298 K,308 K,318 K of 0. 6 mol/L Sulfuric acid, eluting K~+ were 98.6% ,99.7% ,99.8% separately; it is feasible to recycle the posterior segment of 0. 6mol/L sulfuric acid , at 308 K with the recovery 30% . The research showed the possibility of using molasses vinasse to produce potassium sulfate at low cost.%通过单因素实验选择影响ZGC108树脂穿透交换容量的因素,由L_9(3~4)安排试验得最佳工艺条件为:流速1.2 mL/min、K~+浓度9.45 g/L、温度298 K、树脂高度14 cm,此条件下穿透交换容量为52.98 mg/mL,方差分析可知,各因素影响穿透交换容量的顺序为流速＞温度＞K~+浓度＞树脂高度,其中流速和温度的影响达极显著水平.在洗脱剂的体积为树脂床6BV(1BV=75 mL)和流速3BV/h的条件下:温度为298 K的0.2、0.4、0.6mol/L H_2SO_4分别洗脱树脂上的K~+,K~+洗脱率分别为53.4%、78.6%和98.6%;温度分别为298、308、318 K的0.6 moL/L H_2SO_4洗脱树脂上的K~+,K~+洗脱率分别为98.6%、99.7%和99.8%;温度为308 K的0.6 moL/LH_2SO_4洗脱树脂上的K~+时从后段低浓度的洗脱液回收30%配成混合洗脱剂回洗在工艺上是可行的.此工艺为工业化利用糖蜜酒精废液中K~+生产硫酸钾降低成本和提高废液综合利用率提供了基础.
展开▼
