Environmentally adaptive MOF-based device enables continuous self-optimizing atmospheric water harvesting

Husam A. Almassad, Rada I. Abaza, Lama Siwwan, Bassem Al-Maythalony and Kyle E. Cordova ()
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Husam A. Almassad: Royal Scientific Society
Rada I. Abaza: Royal Scientific Society
Lama Siwwan: Royal Scientific Society
Bassem Al-Maythalony: Royal Scientific Society
Kyle E. Cordova: Royal Scientific Society

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Harvesting water vapor from desert, arid environments by metal-organic framework (MOF) based devices to deliver clean liquid water is critically dependent on environment and climate conditions. However, reported devices have yet been developed to adapt in real-time to such conditions during their operation, which severely limits water production efficiency and unnecessarily increases power consumption. Herein, we report and detail a mode of water harvesting operation, termed ‘adaptive water harvesting’, from which a MOF-based device is proven capable of adapting the adsorption and desorption phases of its water harvesting cycle to weather fluctuations throughout a given day, week, and month such that its water production efficiency is continuously optimized. In performance evaluation experiments in a desert, arid climate (17–32% relative humidity), the adaptive water harvesting device achieves a 169% increase in water production (3.5 LH2O kgMOF−1 d−1) when compared to the best-performing, reported active device (0.7–1.3 LH2O kgMOF−1 d−1 at 10–32% relative humidity), a lower power consumption (1.67–5.25 kWh LH2O−1), and saves time by requiring nearly 1.5 cycles less than a counterpart active device. Furthermore, the produced water meets the national drinking standards of a potential technology-adopting country.

Date: 2022
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DOI: 10.1038/s41467-022-32642-0

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