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By simply passing the water through the sand covered with the common graphite seems is possible to purify the water in very cheap manner and making possible the use of water resources in developing countries already accustomed to using the sand to filter the water, but the important thing would be to use very fine grains of graphite covered with dust (practically the same obtained from draw pencils). This economic technique would have effect similar to that of normal carbon filters, then modifying the composition of graphite oxide for Australian researchers can "catch" specific pollutants; or is possible melt the graphite in the water first and add coarse sand to mix before bringing the mixture for about two hours at a temperature slightly higher of one hundred degrees centigrade and proceed to evaporate the water finally getting the product ready to purify water.

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Telephone: +39 338 1809310 Date: 27/06/2011 article n°: 1616 _____________________________________________________________________________________________________