The organic bentonites were prepared by the organic modification to bentonites by cationexchangeprocess using cationic surfactant as modifier.
用阳离子表面活性剂作改性剂，通过阳离子交换法对膨润土进行有机改性制得有机膨润土。
2
The waste acid from the manufacture of cationexchange resin can be successfully recovered and reused by a new washing process with dilute acid instead of traditional washing process with water.
采用稀酸套洗工艺代替传统的加水稀释洗涤工艺，成功地解决了阳离子交换树脂生产中废酸的回收利用问题。
3
Objective to select the optimum purifying process of total alkaloids in Sophora flavescens by different eluents on cationexchange resin.