Cheap ‘nano-tablet’ purifies water for up to six months

SciDevNet: Researchers have developed a water purification tablet comprised of nanoparticles that can be used by developing world communities with no access to clean water. The tablet, MadiDrop, invented by PureMadi -- a non-profit organisation of the University of Virginia, United States -- was presented at the organisation's one-year celebration event last week (8 March). It consists of a small ceramic disk filled with silver or copper nanoparticles that is placed a water vessel, where it can repeatedly......

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