Differing kinds of desiccant dehumidifiers work in different ways, but the primary method they use to extract moisture in the air is either absorption or adsorption. Absorption takes place if the desiccant material dissolves as it will take moisture with the air, as is the situation with moisture absorbers. Both https://dstdehumidifiers.co.uk/case-studies/desiccant-dehumidifiers-in-cold-stores/