The model simulates air pollution control in factories. The cotton acts as a filter, mimicking industrial carbon or HEPA filters that trap dust and carbon particles.
It shows how factories can reduce emissions and prevent harmful smoke from entering the atmosphere
Video Steps to Make the Model:
Step 1: Build Factory Chimney
- Make a factory building using a cardboard box.
- Attach a vertical chimney using a paper roll or cylindrical pipe on top.
Step 2: Create the Purifier Chamber
- Cut a transparent bottle in half.
- Insert cotton inside (this acts as the carbon/cotton filter).
- Fix the bottle horizontally behind or inside the chimney.
Step 3: Setup Smoke Inlet
- Fix a straw or small pipe leading from an incense stick chamber to the cotton filter bottle.
- You can also place a mini DC fan at the end of the system to pull air inside and show real movement.
Step 4: Connect Output
- After cotton filter, connect another pipe upward – this shows clean air release through another mini chimney.
- Optionally, use white cotton at the outlet to show clean smoke.
Working Demonstration:
- Light the incense stick (polluted smoke source) and place it in the chamber.
- The smoke moves through the cotton-filled purifier.
- The cotton traps particles (dust, carbon).
- Only cleaner air exits through the final pipe/chimney.
Add a before and after smoke comparison panel using two transparent tubes – one direct, one filtered – to enhance clarity.