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Desiccanting material is used as dehumid...

Desiccanting material is used as dehumidifying agent for absorbing moisture from highly humid air and again it is made reusable by low humid air. What is the principle involved in this process ?

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Desiccant materials have a high affinity for water vapour. The process involves exposing the desiccant material to humid air stream, allowing it to attract and retain some of the water vapour and then exposing the same desiccants to a dry air stream which has the effect of drawing the retained moisture from the desiccant. The first air stream is the air that is being dehumidified while the second air stream is used only to regenerate the desiccant material.
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