Adsorption-based atmospheric water harvesting: A review of adsorbents and systems

Bilal, Muhammad, Sultan, Muhammad, Morosuk, Tatiana, Den, Walter, Sajjad, Uzair, Aslam, Mian MA, Shahzad, Muhammad Wakil and Farooq, Muhammad (2022) Adsorption-based atmospheric water harvesting: A review of adsorbents and systems. International Communications in Heat and Mass Transfer, 133. p. 105961. ISSN 0735-1933

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Atmospheric water harvesting (AWH) has been an appealing prospect for decades to overcome water scarcity in remote areas. Adsorption-based AWH technologies have gained popularity due to their adaptability, and applicability using low-grade heat sources. This study presents up-to-date and future possibilities of adsorbents and systems for adsorption-based AWH. In this review, in-depth advancements in adsorbent materials are compartmentalized into adsorption equilibrium/isotherms, adsorption kinetics, and thermal conductivity. Various systems designs and modifications have been reviewed and classified accordingly. Liquid desiccants i.e., CaCl2 and LiCl-based AWH systems produced in between 0.63 to 1.0 kg/m/d of water. Recently, metal-organic frameworks (MOFs) are realized as effective adsorbents for AWH. Their excellent hydrophilicity, structural integrity, and tailorable structures can provide water in high and low relative humidity (RH) areas. MOF-841 and MOF-801 yielded maximum adsorption uptakes at 25 °C i.e., 0.5 and 0.3 g/g, respectively. MOF- 801 showed an excellent water production of 0.2-0.3 L/kg/d at 5-40 RH and 20-40°C. MOF-303 delivered ~0.7 L/kg/d at 10 RH and 27oC. Cr-soc-MOF-1 and MIL-101(Cr) resulted in maximum adsorption uptakes i.e., 1.9 g/g and 1.4 g/g, respectively. Future possibilities regarding these captivating and emerging adsorption technologies are discussed as concluding remarks.

Item Type: Article
Additional Information: Funding information: The authors acknowledge the financial support from Bahauddin Zakariya University under the research grant of ORIC Project# 2020-21, awarded to Principal Investigator Dr. Muhammad Sultan.
Uncontrolled Keywords: atmospheric water harvesting, adsorbents, technologies, systems, metal-organic framework, solid and liquid desiccants
Subjects: H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: John Coen
Date Deposited: 16 Mar 2022 10:52
Last Modified: 09 Mar 2023 08:00

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