Zeolite Absorption Box

Tools

• Screwdriver
• Drill
• Hot glue or silicone
• Marker

Safety

• Use molecular sieve grade zeolite labeled for desiccant use
• Vent hot extraction carefully — surfaces get hot in sun

How to put it together

1. 1

   Build the housing

   Assemble a small box (~30×20×15 cm) with a lid. Cut mesh vents that can open at night and close by day.

2. 2

   Load zeolite

   Place ~2 kg dry zeolite (13X or similar) in a breathable mesh tray inside so air contacts the beads.

3. 3

   Add extraction chamber

   Fit the aluminum black-coated chamber that will sit in sun during regeneration. Ensure vapor can flow to the bottle.

4. 4

   Attach collection bottle

   Connect a clean 2L glass bottle under the condenser outlet with a sealed food-safe joint.

5. 5

   Night absorption

   Open vents overnight so zeolite absorbs moisture (indicator blue→pink if using indicator beads).

6. 6

   Day extraction

   Close vents, place the extraction face in sun 4–6 hours. Water should drip into the bottle as zeolite regenerates.

7. 7

   Cycle & store

   Repeat nightly. Store spare zeolite dry. Do not wash beads with tap water.

Tips

• Works even around 15% RH — patience on very dry weeks
• Sun angle on the black chamber drives extraction speed
• Keep vents insect-screened