High-yield solar-driven atmospheric water harvesting with ultra-high salt content composites encapsulated in porous membrane

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

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.

• Jezik: Angleški jezik
• Ključne besede: atmospheric water harvesting, salt content, solution leakage, sorbent, membrane, hygroscopic salt
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 17 str.
• Številčenje: Vol. 2, iss. 12, art. 100664
• PID: 20.500.12556/RUL-134277
• UDK: 628.116:502.3
• ISSN pri članku: 2666-3864
• DOI: 10.1016/j.xcrp.2021.100664
• COBISS.SI-ID: 91975171
• Datum objave v RUL: 04.01.2022

Gradivo je del revije

• Naslov: Cell reports physical science
• Založnik: Cell Press, Elsevier
• ISSN: 2666-3864
• COBISS.SI-ID: 56382467

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: pridobivanje atmosferske vode, vsebnost soli, sorbent, razlitje raztopine, membrana, higroskopska sol

Projekti

• Financer: Drugi - Drug financer ali več financerjev
• Program financ.: Foundation for Innovative Research Groups ofthe National Natural Science Foundation of China
• Številka projekta: 51521004

• Financer: Drugi - Drug financer ali več financerjev
• Program financ.: National Nat-ural Science Foundation of China
• Številka projekta: 52006143