Image Courtesy: Earth.com

Researchers have developed a wearable jacket capable of harvesting drinking water directly from the air, offering a new approach to addressing water shortages in remote and drought-prone regions.

The innovative garment was created by engineers at the University of Texas at Austin and uses specially designed fabric to capture moisture from the atmosphere as the wearer moves. Unlike most atmospheric water harvesting systems, which rely on stationary devices installed on rooftops or other fixed locations, the new design allows water collection to occur during everyday activities.

The project was led by Guihua Yu, a professor of mechanical engineering at UT Austin, whose team sought to overcome a major challenge in atmospheric water harvesting. Previous materials often performed well in small laboratory samples but lost efficiency when scaled up for practical use. To solve this problem, the researchers redesigned the internal structure of the fibers, creating branching channels that allow moisture to move through the material more quickly and efficiently.

The fabric relies on a hydrogel made from plant-based materials combined with lithium chloride, a salt known for its ability to attract water vapor. During testing, the most effective fibers absorbed more than their own weight in water within roughly 20 minutes. More importantly, larger fabric samples retained much of their efficiency, a hurdle that has limited previous designs.

The jacket incorporates four detachable moisture-capturing panels positioned on the front and back. Once saturated, the panels are removed and placed inside a foldable collection unit. A small heater then releases the trapped moisture as vapor, which condenses into liquid water and flows into a storage channel.

Field tests were conducted in Austin as well as two locations in China, including an arid region far from traditional water sources. Depending on humidity levels, the system produced between 400 and 900 milliliters of drinking water per day, roughly equivalent to one or two standard water bottles. Researchers reported that the collected water met World Health Organization drinking water standards, containing only trace amounts of residual lithium.

The team believes the technology could eventually be integrated into backpacks, tents, emergency shelters, and other outdoor equipment. While the jacket remains a prototype, the results demonstrate that wearable fabrics can generate meaningful amounts of potable water from the air, potentially providing a valuable resource in areas where access to clean water is limited.