Specially Treated Cotton Can Harvest Water From Fog

Specially Treated Cotton Can Harvest Water From Fog
Innovation

The cotton is coated with a polymer known as PNIPAAm, which allows it to absorb 340% of its weight in fog droplets.

Emma Hutchings
  • 23 january 2013

‘Fog harvesting’ for water isn’t a new technique. People use netting to capture fog droplets, which are then collected in a container. The process is hardly efficient, but thanks to a special treatment for cotton, it may become a viable solution for obtaining water in desert regions.

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