Engineers Develop Jacket That Creates Drinking Water From Air

Engineers at the University of Texas have developed a jacket capable of converting water vapor from the air into drinking water, a technology they call AirGel. This innovation addresses water scarcity, which the researchers note threatens two-thirds of the global population.

The AirGel technology employs a hydrogel material that utilizes solar energy. According to a report in Science Advances, the device provides a sustainable and accessible clean water solution. "AirGel provides a complementary solution to existing water-processing systems," said Yaxuan Zhao, one of the researchers, in a University of Texas press release. "It can produce water using only air and sunlight, and it can deliver water directly to the point of need."

This approach differs from centralized systems that may require extensive transportation, potentially increasing costs and energy demands. Zhao added that the system's portability, modularity, and reliance on solar energy make it suitable for various applications, including outdoor activities, household or community needs, and disaster relief. The wearable prototype is seen as particularly valuable for individuals in remote outdoor environments, such as soldiers and emergency responders.

In testing, the jacket prototype produced approximately 14 to 30 ounces of water daily, with the output varying based on humidity levels. Researchers stated this represents a threefold to tenfold improvement in performance compared to other materials. The fabric functions by absorbing moisture from the air, then releasing it when heated by sunlight, allowing the water to be condensed and collected.

This technology has also been used in a separate device that successfully harvested a significant amount of drinking water in both the arid Chihuahuan Desert and the more humid environment of Austin. Keith Johnston, a co-author and professor at the Cockrell School of Engineering, highlighted that the team designed a rapid pathway for water to move from vapor in the air to liquid on the fiber surface and then into the textile. This design advancement is crucial for the material's effectiveness in a wearable system.

The University of Texas's commercialization unit, Discovery to Impact, has a pending patent for the AirGel technology. The university is exploring its use in other outdoor gear, such as tents, and for various other applications. Graduate researcher Weixin Guan expressed hope that AirGel can be deployed globally to areas with the greatest need for water, allowing for further study of its field performance and cost-effectiveness to advance its practical implementation.