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    Simple Pine Branches Can Filter Out 99% of Bacteria Producing Clean Water

    mudra
    mudra

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    Simple Pine Branches Can Filter Out 99% of Bacteria Producing Clean Water Empty Simple Pine Branches Can Filter Out 99% of Bacteria Producing Clean Water

    Post  mudra on Fri Apr 11, 2014 3:46 pm

    Simple Pine Branches Can Filter Out 99% of Bacteria Producing Clean Water


    If you’ve run out of drinking water during a lakeside camping trip, there’s a simple solution: Break off a branch from the nearest pine tree, peel away the bark, and slowly pour lake water through the stick. The improvised filter should trap any bacteria, producing fresh, uncontaminated water.

    In fact, an MIT team has discovered that this low-tech filtration system can produce up to four liters of drinking water a day — enough to quench the thirst of a typical person.

    In a paper published this week in the journal PLoS ONE, the researchers demonstrate that a small piece of sapwood (the youngest wood of a tree which serves to move water up from the roots) can filter out more than 99 percent of the bacteria E. coli from water. They say the size of the pores in sapwood — which contains xylem tissue evolved to transport sap up the length of a tree — also allows water through while blocking most types of bacteria.

    read on:  Arrow http://www.goodnewsnetwork.org/earth/science/pine-branch-can-filter-99-pct-of-bacteria.html

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