A review of the methods of harvesting atmospheric moisture

Ahmad, Meraj; Nighojkar, Amrita; Plappally, Anand

doi:10.1007/s11356-023-30727-x

Cited by 5 publications

(2 citation statements)

References 142 publications

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“…However, the high cost and low efficiency of this method render it unsuitable for use in economically underdevelopment areas with scarce water resources. 20 The primary method of active water collection involves fog collection, known for its effectiveness, simplicity, and cost-efficiency, making it particularly suitable for addressing water scarcity in semiarid and water-deficient regions. 21 In recent years, researchers have focused on improving the efficiency of fog collection to promote better practical applications.…”

Section: Introductionmentioning

confidence: 99%

“…Passive water harvesting (current main research materials: MOF, − hydrogels, − and so on) can be utilized in a relatively low-humidity environment with enough sunshine. However, the high cost and low efficiency of this method render it unsuitable for use in economically underdevelopment areas with scarce water resources . The primary method of active water collection involves fog collection, known for its effectiveness, simplicity, and cost-efficiency, making it particularly suitable for addressing water scarcity in semiarid and water-deficient regions .…”

Section: Introductionmentioning

confidence: 99%

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Improved Fog Collection on a Hybrid Surface with Acylated Cellulose Coating

Zhan,

Chen,

Xia

et al. 2024

ACS Appl. Mater. Interfaces

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Fog collection serves as an efficient method to alleviate water scarcity in foggy, water-stressed regions. Recent research has focused on constructing a hybrid surface to enhance fog collection efficiency, with one approach being the prevention of liquid film formation at hydrophilic sites. Inspired by the desert beetle, a coating (10-MCC) made by partially acylating microcrystalline cellulose (MCC) exhibits hydrophilic sites alongside a hydrophobic skeleton enabling rapid droplet capture despite its overall hydrophobicity. The captured droplets quickly coalesce into a large droplet driven by the wetting gradient created by the hydrophobic backbone and hydrophilic sites. To achieve greater fog collection efficiency, a hydrophobic–superhydrophobic hybrid surface is formed by combining a coating of 10-MCC with a superhydrophobic surface. The construction of superhydrophobic surfaces typically involves creating a rough surface with a distinctive structure produced by the anodization technique and modifying it with stearic acid. The superhydrophobic surface exhibits excellent corrosion resistance and mechanical stability. Moreover, the hybrid surface shows high efficiency in fog collection, with a tested maximum efficiency of approximately 1.5092 g/cm2/h, 1.77 times that of the original Al sheets. The results demonstrate a remarkable enhancement in fog collection capacity. Furthermore, this work serves as an inspiration for the low-cost and innovative design of engineered surfaces for efficient fog collection.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improved Fog Collection on a Hybrid Surface with Acylated Cellulose Coating

Zhan,

Chen,

Xia

et al. 2024

ACS Appl. Mater. Interfaces

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Multifunctional Piezoelectric Yarns and Meshes for Efficient Fog Water Collection, Energy Harvesting, and Sensing

Parisi,

Szewczyk,

Narayan

et al. 2024

Small Science

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Given global water scarcity and the quest for sustainable energy, there's a pressing need for integrated approaches addressing water‐energy interdependence worldwide. A practical approach for this challenge involves the implementation of fog water collectors. Herein, a polyvinylidene fluoride (PVDF) multifunctional device capable of harvesting water and electricity from wind is developed and tested, collecting up to 365 mg cm−2 h−1 of fog water. Due to the piezoelectric nature of electrospun PVDF, these yarns and meshes not only serve as piezoelectric sensors, enabling the detection of incoming fog flow and determination of its speed and, bust also harvest electricity by charging a capacitor, making it a green and renewable power source. In this study, promising insights are offered into developing efficient fog water collection methods and utilizing piezoelectric fiber‐based yarns and meshes for multifunctional applications in sustainable water management, energy harvesting, and sensing in a single device.

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