If you plan ahead a little bit you could have your own system of water purification to use in emergencies. Everyone needs clean drinking water and this gadget will let your produce your own ...
Biofiltration as a treatment technology in water and wastewater purification ... Most bacteria live in a biofilm state to enhance their survival and propagation, and to perform essential tasks ...
The floating solar still can desalinate water and produce a small amount of electricity. The technology centers around refractory plasmonic materials, which can turn light into heat. Generally ...