Thursday, February 2, 2023

La Jornada: US scientists want to convert ocean moisture into potable water

AFP

Newspaper La Jornada
Wednesday, January 4, 2023, p. 2

Paris. A team of American scientists claims to have invented a system that could allow ocean moisture to be converted into potable water, according to a study published in the journal Nature. nature,

with climate change We need to find a way to increase the supply of fresh water, because conserving and recycling water from existing sources, while necessary, will not be enough to meet human needsexplained Praveen Kumar, a professor at the University of Illinois at Urbana-Champaign, one of the study’s authors.

We think our proposal can achieve this in a big way.estimated.

Instead of being lost to the atmosphere, the water-saturated air would be captured by extraction structures located on the coasts, which would then be condensed and transported through pipes to suitable deposits.

Compared to classical desalination, this method would have a significant advantage: evaporating and turning into gas, seawater loses almost all of its natural salt. That’s why rain water is not salty.

So recycling it into drinking water would require very little energy consumption. And it will also not be necessary to use products such as brine, which are harmful to the environment.

natural system

According to these scientists, wind farms offshore And terrestrial solar panels can contribute to powering the purification circuit.

The researchers believe that this technique reproduces the natural system but in a directed manner.

“The ‘vertical capture surface’ 210 meters wide and 100 meters high could supply enough extractable moisture for the daily drinking water needs of approximately 500,000 people.”

The scientists rely on simulations from 14 locations where there are problems with water supplies, such as Los Angeles or Rome. According to models, this type of device could generate between 37.6 billion and 78.3 billion liters of water per year, depending on local conditions.

Climate projections suggest ocean vapor flux will increase over the years, making even more fresh water availablesaid Afifa Rehman, co-author of the report.

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