Based on solar energy, this solar water filter destroys all pathogens

Based on solar energy, this solar water filter destroys all pathogens

An experimental solar water filter has just been created, which can significantly improve the condition of water resources in places with abundant access to fresh but polluted water. All because this solar water filter destroys all pathogens, using only natural resources.

A solar water filter has been created with great potential

The prototype device was developed at the Swiss EPFL institute and consists of a theoretically simple form which is reduced to two tubes and a multilayer composite material between two glass panes. In practice, water enters through the upper tube, cleans inside the glass section with a mixture of titanium dioxide and carbon nanowires, to finally flow out through the lower tube in a purified form.

It only requires exposure to sunlight, because the ultraviolet part of it causes the composite to produce a group of molecules called reactive oxygen species. These are very effective in killing harmful bacteria and viruses, which has already been confirmed in tests. Therefore, it is believed that this technology may also prove effective in eliminating micropollutants such as pesticides and drug residues.

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Although ultraviolet light itself has a beneficial effect on the water level, the addition of both types of nanotubes significantly accelerates the process and intensifies it. Therefore, the current small-scale model can purify 2 liters of water per day, but has considerable scaling potential and even room for improvement with the addition of gold nanoparticles. However, nothing is known about its use in practice.


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