Practical water production from desert air

作者：Farhad Fathieh, Markus J. Kalmutzki, Eugene A. Kapustin, Peter J. Waller, Jingjing Yang, Omar M. Yaghi · 发表于：Science Advances · 年份：2018 · DOI：10.1126/sciadv.aat3198 · 被引用次数：722 · 研究领域：Spacecraft and Cryogenic Technologies、Groundwater and Isotope Geochemistry、Wind and Air Flow Studies

Energy-efficient production of water from desert air has not been developed. A proof-of-concept device for harvesting water at low relative humidity was reported; however, it used external cooling and was not desert-tested. We report a laboratory-to-desert experiment where a prototype using up to 1.2 kg of metal-organic framework (MOF)-801 was tested in the laboratory and later in the desert of Arizona, USA. It produced 100 g of water per kilogram of MOF-801 per day-and-night cycle, using only natural cooling and ambient sunlight as a source of energy. We also report an aluminum-based MOF-303, which delivers more than twice the amount of water. The desert experiment uncovered key parameters pertaining to the energy, material, and air requirements for efficient production of water from desert air, even at a subzero dew point.