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one billion people do not have access to clean safe water. Scientists are now creating new tests that kills up 98 percent of disease filled bacteria. The scientists have studied that regular purifiers collect the bacteria with tiny pores in filters. By doing this alot of energy is used and these filters get clogged periodicly and need to be cleaned. In the end when the proces is finished it only traps the bacteria and not killing.
Yi Cui and collegues have studied that silver and electricity are both components of killing bacteria. There new plan for the filter would be large pores and allows water to flow through easily. The proces in which they use to filter the proces is as follows. They spread tiny silver nanowires onto cotton then they add a coating of carbon nanotubes. By doing this step it gives extra electricle conduct. Coli tanted water showed that this filter killed up to 98 percent of the disease filled bacteria inside of it. With this new filter it never cloged and could run throught the filter quickly without any pump. The coast of these new filters are very expensive. But in the long run it will coast less to filter things like air food and of course water. The new machines last longer and are more efficient and can lead us into a beter future.
I think we should invest in these filters. If they can take more disease's out of things we have a less chance of getting sick. In the long run it will actually cut down money we have to spend to replace clogged filters. I was amazed that with such huge pores it could filter so well.
1. What percent of bacteria does this filter kill?
2. What two components kill bacteria?
3. Who with the help of his colegues are working on this?
4. About how many people do not have access to clean water?
