Different types of desiccant dehumidifiers function in other ways, but the main approach they use to extract dampness with the air is both absorption or adsorption. Absorption happens if the desiccant material dissolves as it will take moisture from the air, as is the situation with dampness absorbers. Desiccant dehumidifiers https://dstdehumidifiers.co.uk/case-studies/desiccant-dehumidifiers-in-cold-stores/