The World Health Organization estimates that over 785 million people lack a clean source of drinking water. Even though 71 percent of the Earth's surf

Nanofiber Membrane Filters 99.9% of Salt from Seawater within Minutes

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2021-07-07 17:30:04

The World Health Organization estimates that over 785 million people lack a clean source of drinking water. Even though 71 percent of the Earth's surface is covered by seawater, we cannot drink this water. Scientists around the globe have been working to find efficient ways to desalinate seawater cheaply. Now, a team of Korean scientists may have found a way to do it in minutes. 

Freshwater, needed for most human activities accounts for only 2.5 percent of the total water available on the planet. Changing climate conditions are resulting in changes in precipitation and dry rivers, prompting countries to declare water shortages for the first time in their history. It is hardly surprising that desalination of seawater is the easiest way to address this issue. But these processes have their own limitations. One such limitation is membrane wetting. 

When using membranes to filter seawater, the membrane must remain dry for long periods of time. If the membrane becomes wet, the filtration process becomes ineffective and allows large amounts of salt to pass through the membrane. For long term operations, progressive membrane wetting has been observed regularly, which be resolved by changing the membrane. 

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