A tea bag and nanotechnology can help make the quality of life for millions of people get a bit better, at least in the aspect that has to do with the most precious liquid by man: the water or, better yet, drinking water.
Actually it is not just a tea bag, but a water filter that resembles it. It is designed to fit the neck of a standard size water bottle and costs between one and five cents per liter, depending on the quality of the filter and water to be obtained.
“The outside of the bag is covered in a polymer that includes a biocide, which means that both filters the water as it kills bacteria – we have not yet found a bacterium that can kill,” says Professor Cloete University of Stellenbosch.
But this is not the only research Water Filtration being carried out. Other research interests us even more has to do with nanotechnology course. Researchers in California are developing a filter that uses nanotechnology and silver to produce potable water.
Operated through a mesh made of a combination of nanotubes and silver wire. Silver stimulated by an electric current causes can kill up to 98% of the bacteria.
“The concentration of bacteria after filtration depends on the initial concentration of bacteria in the water,” said Dr Cui developer at Stanford University.
“If the initial concentration is too high, one would have to make filtering more times using the device you have now. However, we are trying to optimize our filter to make it more effective. And maybe after you get filtered water only ‘safe’. “
