The MIT created a device that can extract water from the air even in desert
Researchers at the Massachusetts Institute of Technology and the University of California at Berkeley have developed and now successfully tested an innovative technology capable of removing water from the air even under a dry arid climate. Water production in the desert is a matter extremely difficult, and the introduction of such technology could significantly make life easier for many people. Researchers first told about it to the scientific world as early as last year, and now, and to test it in real conditions.
moisture from the air separation technology is not new. But all the currently existing ways of doing it faced serious constraints. Typically, for effective operation of the devices required humidity above 50%, and a large amount of energy. American researchers have been able to establish the mechanism of separation of water from air passively without the use of energy and at a low level up to 10% moisture. Technology Operating Principles were published in the journal Nature Communications.
The essence of the new technology is a special metamaterials, which scientists called metal-organic framework (MOF). It consists of related molecules, creating ultraporous high surface area. MOF is able to be very hydrophilic, literally attracting the moisture. At night, it extracts water from the air and stores it in its pores, and under the influence of sunlight the water leaves the pores and condenses, which allows to collect it. The system is completely passive, it does not need energy sources or any mechanical parts.
The possibilities of this technology is already quite impressive. After all, using only about a kilogram of the MOF, you can collect more than 250 milliliters of water per day, even in the driest desert. Scientists have tested the water recovery system in the arid climate of Arizona and were very pleased with the results of the technology in the field. It is also important that the MOF material does not add any impurities in the water held by them, in no way reflected on its quality. At the moment, scientists think about how to make the system even more efficient, compact and convenient.