Around the world, access to clean drinking water is becoming more difficult. Climate change, growing populations, and ongoing conflicts are putting serious pressure on water supplies.
According to the World Health Organization and UNICEF, nearly 2 billion people still do not have safe drinking water.
Because of this, scientists are searching for new ways to produce water, especially in dry areas where it is needed most.
One promising idea is to collect water directly from the air. Even in dry environments, the air contains some moisture.
Special devices called atmospheric water generators can capture this moisture and turn it into drinking water.
However, there is a problem. These systems work well in humid conditions, but they become less efficient and more expensive when the air is dry. This limits their use in the very places where water is most scarce.
Researchers in Norway, working at SINTEF, are trying to solve this problem.
Led by scientist Roberto Mennitto, the team has developed a new material that can collect water from the air more efficiently, even when humidity levels are low.
The key to their innovation is a special type of polymer. This material is made from two main parts. One part is a soft, flexible substance similar to rubber or silicone.
The other part is a water-absorbing polymer, similar to the material used in baby diapers. When combined, these materials create a structure that can pull water from the air and hold it inside.
Mennitto explains that the material works like it has tiny “magnets” that attract water molecules. As the material absorbs moisture, it stores it until it becomes full. Then, by applying heat, the water can be released and collected.
The process is similar to drying wet hair with a hairdryer. Warm air helps pull water out of the material, turning it into vapor. This vapor is then cooled and turned into liquid water, which can be collected in a tank and used for drinking.
One of the advantages of this new material is that it is both affordable and durable. It is made from common, low-cost ingredients and does not require expensive or harmful chemicals during production.
It can also be shaped in different ways, such as thin layers or coatings, and even produced using 3D printing. This flexibility allows engineers to design more efficient systems that use less energy.
Another important feature is its strength. In testing, the material was able to collect water continuously for 120 hours without losing its ability to work. This is a big improvement over similar materials, which often break down quickly during use.
At the moment, the cost of using this new material is similar to existing water generators. However, the research team hopes to reduce costs by about 25% in the future. They plan to do this by improving the design and increasing production from small laboratory amounts to larger industrial scales.
There is already growing interest in this technology. Several start-ups and investors have shown enthusiasm, and the researchers are now working toward building a prototype. Their goal is to create a system that is easy to use, requires little maintenance, and can operate in a wide range of environments.
If successful, this technology could provide a reliable source of clean water in places where traditional water supplies are limited or unreliable. In remote or dry regions, where bottled water is expensive or unavailable, turning air into water could become a practical and life-changing solution.
While more work is needed before this technology is widely available, the idea is simple but powerful. By using advanced materials and smart design, scientists may soon be able to turn the air around us into a safe and steady source of drinking water.
Source: KSR.
