二混蜜中钾的离子交换柱层析法分离和回收

在制糖工业中钾是一种影响糖分回收的造蜜剂.提出以离子交换柱层析分离和回收二混蜜中钾盐的新思路,研究了钾在离子交换层析柱上的分离和洗脱工艺条件.结果表明,实验条件下BK001树脂在层析柱中吸附K+的最佳的工艺条件为:操作流速2 BV/h、锤度50°Bx、温度60℃、高径比为8:1；各工艺条件对钾的分离影响大小顺序是:高径...

Separation and recycling of potassium from mother liquor B by ion exchange column chromatography

K＋ prevents sugar from crystallizing as a melassigenic ion in sugar industry. This work presented a new way to separate and recycle the potassium in mother liquor B by ion exchange column chromatography. The process conditions of separation and elution of K＋ on ion exchange column chromatography were studied. Results showed that,the best process condition of adsorbing K＋ using resin BK001 was that,temperature 60℃, brix 50° Bx, flow rate 2BV/h, and the ratio of height to diameter of the resin column was 8 ： 1. The process conditions affect the separation of potassium in the order： resin height 〉 temperature 〉 concentration of K＋ 〉 flow rate. Un- der the optimum process conditions, 90mL of resin bed can absorb K＋ 5.29g. The optimum condition of eluting K＋ using sodium -containing eluant is that, the mass and volume of eluant was 10.6g and 5BV, temperature 80℃ and the flow rate was 2 BV/h. Under these conditions the elution rate was 100.4 %.