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8/3/2019 'Miracle Tree' Substance Produces Clean Drinking Water
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'Miracle Tree' Substance Produces Clean Drinking Water Inexpensively and SustainablyJanuary 19, 2012"Antimicrobial Sand via Adsorption of Cationic Moringaoleifera Protein"Langmuir A natural substance obtained from seeds of the "miracletree" could purify and clarify water inexpensively andsustainably in the developing world, where more than 1billion people lack access to clean drinking water, scientistsreport. Research on the potential of a sustainable water-treatment process requiring only tree seeds and sandappears in ACS' journal Langmuir .
Stephanie B. Velegol and colleagues explain that removingthe disease-causing microbes and sediment from drinkingwater requires technology not always available in rural areasof developing countries. For an alternative approach, Velegollooked to Moringa oleifera, also called the "miracle tree," aplant grown in equatorial regions for food, traditionalmedicine and biofuel. Past research showed that a protein inMoringa seeds can clean water, but using the approach was
too expensive and complicated. So Velegol's team sought todevelop a simpler and less expensive way to utilize theseeds' power.To do that, they added an extract of the seed containing thepositively charged Moringa protein, which binds to sedimentand kills microbes, to negatively charged sand. The resulting"functionalized," or "f-sand," proved effective in killingharmful E. coli bacteria and removing sediment from water samples. "The results open the possibility that ... f-sand canprovide a simple, locally sustainable process for producingstorable drinking water," the researchers say.
The authors acknowledge funding from the National ScienceFoundation and the U.S. Environmental Protection Agency.
SOURCE: American Chemical Society
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