Differing kinds of desiccant dehumidifiers work in various ways, but the key course of action they use to extract dampness through the air is possibly absorption or adsorption. Absorption occurs when the desiccant substance dissolves as it will require moisture in the air, as is the situation with dampness absorbers. https://dstdehumidifiers.co.uk/case-studies/desiccant-dehumidifiers-in-cold-stores/