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This Brilliant Water Filter Made From A Tree Branch Could Help Millions Of People

Posted by Krishna Kalki on February 28, 2014 at 8:47pm in Food, Health and Nutrition
Researchers from MIT have created a water filter fashioned from a small piece of sapwood, an inexpensive and disposable technology that could help millions of people in the developing world who don't have access to safe drinking water.The key ingredient is plant xylem — a tissue in plants made up of vessels and tiny pores. The vessel pathways allow sap to travel up from the tree's roots to the shoots, while the pores trap air bubbles so they don't spread into the wood and kill the tree.“It’s the same problem with water filtration where we want to filter out microbes but maintain a high flow rate," Rohit Karnik, co-author of the study and an associate professor of mechanical engineering at MIT, said in a media release.It's also a coincidence that the size of these xylem pores, anywhere from a few nanometers to 500 nanometers depending on the plant, are the perfect size for blocking out pathogens, researchers said in a study published Wednesday in the journal PLoS One.Read More Plus See Photos @ http://www.businessinsider.com/mit-researchers-create-water-filter-made-from-a-tree-branch-2014-2
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