CHICKEN FAECES
July 1st, 2005
BY KEITH NUTHALLSCIENTISTS from the USA Agricultural Research Service (ARS) have discovered that charred chicken faeces can be used as a filter to rid wastewater of heavy metals, such as hard to dispose of copper, cadmium and zinc. When burnt in an oxygen free environment, a spongy substance with a wide surface area is created that can be processed into pellets, granules and powders to accommodate different filters. An note from the American government run ARS said: "Charred filtering materials are also attractive in that they require less energy to produce than ...
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