Regeneration of solid desiccants by electro-osmostic effect caught more and more attentions due to its energy saving and simplicity. The surface area and pore size analyzer was used to test the adsorption performance of the zeolite and the macroporous silica gel firstly. The possibility of electro-osmosis regeneration for the zeolite and the macroporous silica gel has been analyzed combined with different desiccants adsorption and electro-osmosis effect. The adsorption mechanism of the zeolite is monolayer adsorption or porous filler. The water exists in the micro pore of the zeolite in molecular state

thus it can’t form electro-osmosis effect. Capillary condensation happens for macroporous silica gel. The liquid water exists when it is saturated

so it is possible for macroporous silica gel to be regenerated by the electro-osmosis effect. The experiment results show the critical moisture content existing electro-osmosis effect of zeolite is between 40%~55% when the voltage is 30V which is higher than its saturated moisture content. This result verifies that there is no electro-osmosis effect for the zeolite when it is unsaturated. As for the macroporous silica

there is no electro-osmosis effect when the moisture content is 95% and the voltage is 60V. And electro-osmosis effect exists for 105% moisture content and 40V

50V and 60V voltage. Electro-osmosis effect can reduce the moisture content of the macroporous silica gel when it is unsaturated.