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Solar-Driven Drum-Type Atmospheric Water Harvester Based on Bio-Based Gels with Fast Adsorption/Desorption Kinetics.
- Source :
-
Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Aug; Vol. 36 (32), pp. e2403876. Date of Electronic Publication: 2024 Jun 02. - Publication Year :
- 2024
-
Abstract
- Sorption-based atmospheric water harvesting is an attractive technology for exploiting unconventional water sources. A critical challenge is how to facilitate fast and continuous collection of potable water from air. Here, a bio-based gel (cellulose/alginate/lignin gel, CAL gel), resulting from the integration of a whole biomass-derived polymer network with lithium chloride is reported. A fast adsorption/desorption kinetics, with a water capture rate of 1.74 kg kg <superscript>-1</superscript> h <superscript>-1</superscript> at 30% relative humidity and a desorption rate of 1.98 kg kg <superscript>-1</superscript> h <superscript>-1</superscript> , is simultaneously realized in one piece of CAL gel, because of its strong hygroscopicity, hydrophilic network, abundant water transport channels, photothermal conversion ability, and ≈200-µm-thick self-supporting bulky structure caused by multicomponent synergy. A solar-driven, drum-type, tunable, and portable harvester is designed that can harvest atmospheric water within a brief time. Under outdoor conditions, the harvester with CAL gels operates 36 switches (180°) per day realizes a water yield of 8.96 kg kg <subscript>gel</subscript> <superscript>-1</superscript> (18.87 g kg <subscript>device</subscript> <superscript>-1</superscript> ). This portable harvester highlights the potential for fast and scalable atmospheric water harvesting in extreme environments.<br /> (© 2024 Wiley‐VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-4095
- Volume :
- 36
- Issue :
- 32
- Database :
- MEDLINE
- Journal :
- Advanced materials (Deerfield Beach, Fla.)
- Publication Type :
- Academic Journal
- Accession number :
- 38739951
- Full Text :
- https://doi.org/10.1002/adma.202403876