Design considerations for next-generation sorbent-based atmospheric water-harvesting devices

Wilson, Chad T.; Cha, Hyeongyun; Zhong, Yang; Li, Adela Chenyang; Lin, Emily; El Fil, Bachir

doi:10.1016/j.device.2023.100052

Cited by 15 publications

(7 citation statements)

References 69 publications

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“…For such atmospheric conditions, sorbent-based AWHs are appropriate. Many materials, including zeolite, metal–organic frameworks (MOFs), silica gels, and hydrogels, can be used for selective adsorption of water vapor from air Figure c depicts a prototype of an AWH based on MOFs. , The prototype comprises a MOF layer that absorbs water vapor from the air and then releases it under natural sunlight.…”

Section: Applicationsmentioning

confidence: 99%

Fundamentals and Applications of Surface Wetting

Josyula,

Kumar Malla,

Thomas

et al. 2024

Langmuir

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In an era defined by an insatiable thirst for sustainable energy solutions, responsible water management, and cutting-edge lab-on-a-chip diagnostics, surface wettability plays a pivotal role in these fields. The seamless integration of fundamental research and the following demonstration of applications on these groundbreaking technologies hinges on manipulating fluid through surface wettability, significantly optimizing performance, enhancing efficiency, and advancing overall sustainability. This Review explores the behavior of liquids when they engage with engineered surfaces, delving into the farreaching implications of these interactions in various applications. Specifically, we explore surface wetting, dissecting it into three distinctive facets. First, we delve into the fundamental principles that underpin surface wetting. Next, we navigate the intricate liquid−surface interactions, unraveling the complex interplay of various fluid dynamics, as well as heat-and mass-transport mechanisms. Finally, we report on the practical realm, where we scrutinize the myriad applications of these principles in everyday processes and real-world scenarios.

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Section: Applicationsmentioning

confidence: 99%

Fundamentals and Applications of Surface Wetting

Josyula,

Kumar Malla,

Thomas

et al. 2024

Langmuir

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“…This translates to ∼1.3 L potable water per day with 0.23 kg of zeolite AQSOA Z02 and a 1 L adsorbent bed, or 2−5 times the daily water production compared to that of previous devices. 25,31 This proposed compact adsorption bed design provides a reliable and effective source of potable water production that can be integrated into various existing applications, such as in buildings, industrial plants, and transportation with suitable high-density waste heat. Further development and implementation of other novel materials can benefit and improve upon the above performance, including metal−organic frameworks and salt-impregnated hybrid materials that achieve higher water uptake and more accessible desorption temperature.…”

Section: Conventionalmentioning

confidence: 99%

“…The sorbent coating kinetics scale as D v /δ ads 2 , where D v is the effective diffusivity of vapor transport through Table 1. Performance Summary of Solar-Driven and High Energy Density-Driven SAWH 25…”

mentioning

confidence: 99%

Design of a Compact Multicyclic High-Performance Atmospheric Water Harvester for Arid Environments

Li,

El Fil,

et al. 2024

ACS Energy Lett.

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Water scarcity remains a grand challenge across the globe. Sorption-based atmospheric water harvesting (SAWH) is an emerging and promising solution for water scarcity, especially in arid and noncoastal regions. Traditional approaches to AWH such as fog harvesting and dewing are often not applicable in an arid environment (<30% relative humidity (RH)), whereas SAWH has demonstrated great potential to provide fresh water under a wide range of climate conditions. Despite advances in materials development, most demonstrated SAWH devices still lack sufficient water production. In this work, we focus on the adsorption bed design to achieve high water production, multicyclic operation, and a compact form factor (high material loading per heat source contact area). The modeling efforts and experimental validation illustrate an optimized design space with a fin-array adsorption bed enabled by high-density waste heat, which promises 5.826 L water kg sorbent −1 day −1 at 30% RH within a compact 1 L adsorbent bed and commercial adsorbent materials.

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“…However, its application is hampered by significant energy losses in fuel-to-electricity conversion, often less than 30% with conventional diesel generators, and necessitates supplementary infrastructure such as batteries and converters, escalating operational costs. 193,194 In pursuit of sustainable and low-carbon AWH solutions, alternative heating methodologies, particularly solar-thermal energy, have garnered attention. 195 Strategies like integrating photothermal layers on sorbent surfaces or embedding solar absorbers within materials have shown promise, capitalizing on the abundant and renewable nature of solar energy.…”

Section: System-level Design Considerationsmentioning

confidence: 99%