He Shan (Author), Quanwen Pan (Author), Chengjie Xiang (Author), Primož Poredoš (Author), Qiuming Ma (Author), Zhanyu Ye (Author), Guodong Hou (Author), Ruzhu Wang (Author)

Abstract

Sorption-based atmospheric water harvesting (SAWH) is recognized as a feasible and sustainable approach to address global water scarcity in arid regions. However, easy-to-prepare and inexpensive salt-based sorbents have stringent requirements referring to sorption duration and environmental humidity; otherwise, the leakage of salt solution can occur. Here, we develop a composite sorbent with remarkably high salt content of 80 wt % and without the risk of leakage by introducing a polytetrafluoroethylene membrane encapsulation method. The developed composite HSCC-E10 shows both fast sorption kinetics inherent to the matrix of composites and high absorption capacity of hygroscopic salt solutions, achieving ultra-high sorption capacity of 3.75 g/g, 2.83 g/g, and 1.47 g/g for 90%, 70%, and 30% relative humidity (RH), respectively. A lab-scale device is developed demonstrating 560 mL/m2 water yield under outdoor natural sunlight. The applicability of proposed sorbents could pave the road for future middle- or large-scale applications, such as vehicle-mounted and continuous SAWH.

Keywords

pridobivanje atmosferske vode;vsebnost soli;sorbent;razlitje raztopine;membrana;higroskopska sol;atmospheric water harvesting;salt content;solution leakage;membrane;hygroscopic salt;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 628.116:502.3
COBISS: 91975171 Link will open in a new window
ISSN: 2666-3864
Views: 137
Downloads: 56
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Other data

Secondary language: Slovenian
Secondary keywords: pridobivanje atmosferske vode;vsebnost soli;sorbent;razlitje raztopine;membrana;higroskopska sol;
Type (COBISS): Article
Pages: str. 1-17
Volume: ǂVol. ǂ2
Issue: ǂiss. ǂ12
Chronology: Dec. 2021
DOI: 10.1016/j.xcrp.2021.100664
ID: 14229754