Sustainable water generation: grand challenges in continuous atmospheric water harvesting

Poredoš, Primož; He, Shan; Wang, Chenxi; Deng, Fangfang; Wang, Ruzhu

doi:10.1039/d2ee01234k

Cited by 64 publications

(34 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, each time switching to the next bed and heating and cooling the adsorbent bed can cause energy waste. 156 day −1 . This system produced water from air outside the operating range of compression systems and in dry conditions of RH = 10% and temperature of 27 °C (related to dew point −4 °C).…”

Section: Sorption-based Water Harvesting Devicesmentioning

confidence: 99%

An overview of atmospheric water harvesting methods, the inevitable path of the future in water supply

2023

View full text Add to dashboard Cite

show abstract

Section: Sorption-based Water Harvesting Devicesmentioning

confidence: 99%

An overview of atmospheric water harvesting methods, the inevitable path of the future in water supply

2023

View full text Add to dashboard Cite

show abstract

“…For example, radiative cooling technology can be exploited to enhance systemic water harvesting performance by assisting the exothermal sorption process and subsequent condensation process. [ 64 ] For the water sorption process, the radiative cooling materials can be configured with an HPP‐based sorption bed to expedite the dissipation of sorption heat, further advancing the sorption kinetics. For the desorption–condensation process, the release of condensation heat dominates moisture's condensation efficiency, while the heat transfer mainly relies on the natural convection with ambient air to some extent.…”

Section: Discussionmentioning

confidence: 99%

Section: Sorption and Desorption Performancementioning

confidence: 99%

“…[63] Different from the static sorption performance, sorbent's sorption kinetics not only rely on the material's intrinsic properties but also have tight relationships with the sorbent's size, shape, and specific operational condition (temperature, relative humidity, and airflow rate). [25,64] Considering the material properties of HPP, its sorption kinetics property is directly determined by its heat and mass transfer properties. It denotes that the smaller the resistances of diffusion and permeation are, the better the kinetic sorption performance is.…”

Section: Kinetic Performancementioning

confidence: 99%

“…To fully employ the available solar energy in order to gain optimal SAWH performance, matching the time between the sorption and desorption process is pivotal. [ 64,77 ] For a passive SAWH device, utilizing a batch or continuous desorption process could be utilized to improve solar utilization efficiency during the entire daytime. [ 21 ] Several HPP‐based sorbent beds can sorb moisture from the atmosphere fully at night.…”

Section: Sorption and Desorption Performancementioning

confidence: 99%

See 2 more Smart Citations

Hygroscopic Porous Polymer for Sorption‐Based Atmospheric Water Harvesting

et al. 2022

Self Cite

View full text Add to dashboard Cite

Sorption-based atmospheric water harvesting (SAWH) holds huge potential due to its freshwater capabilities for alleviating water scarcity stress. The two essential parts, sorbent material and system structure, dominate the water sorption-desorption performance and the total water productivity for SAWH system together. Attributed to the superiorities in aspects of sorption-desorption performance, scalability, and compatibility in practical SAWH devices, hygroscopic porous polymers (HPPs) as next-generation sorbents are recently going through a vast surge. However, as HPPs' sorption mechanism, performance, and applied potential lack comprehensive and accurate guidelines, SAWH's subsequent development is restricted. To address the aforementioned problems, this review introduces HPPs' recent development related to mechanism, performance, and application. Furthermore, corresponding optimized strategies for both HPP-based sorbent bed and coupling structural design are proposed. Finally, original research routes are directed to develop next-generation HPP-based SAWH systems. The presented guidelines and insights can influence and inspire the future development of SAWH technology, further achieving SAWH's practical applications.

show abstract

Self‐Contained Moisture Management and Evaporative Cooling Through 1D to 3D Hygroscopic All‐Polymer Composites

Li,

Shao,

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Sorption‐based moisture management and evaporative cooling represent emerging technologies with substantial potential for energy‐saving personal thermal management (PTM). However, design of high‐performance and durable hygroscopic composites combining efficient heat dissipation with wearing comfort presents significant challenges. Herein, hygroscopic 1D nanofibers and 2D fabrics are developed using two hygroscopic polymers and crosslinking strategies. The design endows the fabrics with self‐contained properties including excellent hygroscopicity, durability, ductility, breathability, washability, and antimicrobial capability. The fabrics exhibit thickness‐independent moisture sorption and equilibrium water uptake of 1.19 g g−1 in 4 h under 90% relative humidity (RH). About 80% of the absorbed water can be rapidly released through mild heating within 10 min. These high moisture sorption/desorption rates outperform the majority of composite desiccants, enabling up to five sorption/desorption cycles per day under a real sky. The hygroscopic fabrics can reduce apparent temperatures and prevent unsightly sweat stains on clothing, improving thermal and clothing comfort. Furthermore, hygroscopic 3D hierarchical matrices are printed, showcasing the potential to use small amounts of hygroscopic materials to boost moisture sorption. This work advances the controlled fabrication of hygroscopic polymer composites, ranging from 1D nanofibers and 2D fabrics to 3D matrices, highlighting their promising prospects for future sorption‐based PTM applications.

show abstract

Sustainable water generation: grand challenges in continuous atmospheric water harvesting

Abstract: This perspective provides possible development paths for future advancement of continuously operated sorption and radiative sky cooling atmospheric water harvesting on material and system levels.

Cited by 64 publications

References 79 publications

An overview of atmospheric water harvesting methods, the inevitable path of the future in water supply

An overview of atmospheric water harvesting methods, the inevitable path of the future in water supply

Hygroscopic Porous Polymer for Sorption‐Based Atmospheric Water Harvesting

Self‐Contained Moisture Management and Evaporative Cooling Through 1D to 3D Hygroscopic All‐Polymer Composites

Contact Info

Product

Resources

About