A membrane technology co-developed by Eastman Chemical and Hydration Technologies may help deliver clean drinking water to developing countries and disaster areas, writes Angie DeRosa. The HydroPack, a small pouch with a cellulose-based membrane, is designed to filter contaminants when soaked in untreated water for several hours. "Forward osmosis is the process by which water goes through trees; there is no power required. ... Cellulose technology is the heart of the membrane," said Eastman official Gaylon White.
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