The cost parameters for membrane separation of gases are defined in terms of effective selectivity and cost permeability.
将膜分离过程的成本定义为成本渗透率和有效选择性的函数。
2
Recently, some new methods, such as supercritical chemical reaction, membrane reaction, and reactive distillation, have been applied to improve the selectivity of complex reaction.
近年来，出现了一些提高复合反应选择性的新方法，如：超临界反应、膜反应、反应精馏等。
3
But membrane technology is a potential solvent recovery means, and the major problem is how to increase the membrane flux and selectivity.