We can get really humid days sometimes. Recently I was digging around in boxes and found some old mineral specimens, and I set out a few of the salt crystal rocks. I soon found that they had pools of water accumulating underneath them, which required some cleaning and attention.
After putting them on drinkable trays, I found that the surface tension was pulling the water off the bottom of the block and causing it to collect. This got me thinking about passing the air in coming to this space through a baffle of salt blocks.
The good thing about salt blocks is that the absorbed moisture can be 'wicked' away. Whatever the solution, this needs to be a cycle that is ongoing using the material(s) installed. I am fine to imagining the installation of a plumbed drain or collection reservoir.
Is there another material or better technique for removing moisture from the air in this passive manner?
*Passive meaning 'without an energized / motorized compressor to dehumidify'. Mostly, the mechanism needs to be designed to leverage ambient energy or mechanics, and minimize maintenance cycles and materials handling.