Furthermore, the mechanism and the methods of the (Ca)bentonite modified by the sodium salt, and the (Na)bentonite modified by the organic salt, have been investigated in detail.

• 以山东潍坊二级膨润土为原料，研究了钙基膨润土钠化改性和钠基膨润土有机改性的机理和方法，并探讨了有机膨润土处理含油水时的机理。