Atmospheric water generation in arid regions – A perspective on deployment challenges for the Middle East

Ansari, Essa; Ferber, Nicolas Lopez; Milošević, Tamara; Barron, Jose; Karanikolos, Georgios N.; AlMarzooqi, Faisal; Dumée, Ludovic F.; Calvet, Nicolas

doi:10.1016/j.jwpe.2022.103163

Cited by 18 publications

(12 citation statements)

References 128 publications

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“…Nevertheless, in this case, large spaces are also required if more than a few L/day are needed. It is worth noting that one of the tests most performing reports a yield of about 5 L/(day m 2 ) [10].…”

Section: Awg Technologiesmentioning

confidence: 99%

“…Nevertheless, water quality plays a fundamental role. In particular, water coming from air conditioning systems can be affected by heavy metals and microbiological pollution [10]; thus, its legal employment normally is confined to uses not related to humans, as underlined, for example, in Dubai regulations [11]. Moreover, air conditioning systems are usually designed to minimise condensation, as the latent heat is perceived as an energy waste, because the condensate is normally treated as a polluted liquid to be disposed of.…”

Section: Introductionmentioning

confidence: 99%

“…The same lack of tests-in particular, for Middle East regions-was also underlined in ref. [10]. As a matter of fact, it is possible to find some data coming from tests about little size systems capable of producing some litres per day up to a few hundreds.…”

Section: Introductionmentioning

confidence: 99%

“…As a matter of fact, it is possible to find some data coming from tests about little size systems capable of producing some litres per day up to a few hundreds. For example, in the review of [10], concerning the Middle East, the maximum water extraction test, performed by AWGs, gave a production of about 232 L/day. In ref.…”

Section: Introductionmentioning

confidence: 99%

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Air to Water Generator Integrated System Real Application: A Study Case in a Worker Village in United Arab Emirates

Cattani¹,

Cattani

Magrini

2023

Applied Sciences

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The water crisis is currently affecting billions of people. To mitigate the issue, unconventional water sources should be taken into account. Among them, atmosphere is a promising possibility, but it is still considered a novel source, and more studies, based on real results concerning the behaviour of the Atmospheric/Air-to Water Generator (AWG) systems, also known as Atmospheric Water Harvesting (AWH) systems, are needed to prove the water extraction sustainability. The current research work describes the real application of an integrated AWG system, based on a thermodynamic reverse cycle, designed to extract water from air and take advantage of the other useful effects of the cycle at the same time. The integrated machine was placed in Dubai, in a worker village, and tested. The machine is able to provide, at the same time, with the same energy consumption, water, heating and cooling energy. On the basis of onsite measurements, calculations about the efficiencies, using the Water Energy Transformation (WET), plastic savings, due to bottled water avoidance, and economic sustainability were carried out. The work answers to research questions concerning the potentiality of integrated systems in Heating Ventilation Air Conditioning (HVAC) plants revamping, the economic sustainability of water extraction from air and the lack of tests on real AWG machines of thousand-litre production capability (large size).

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Section: Awg Technologiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Air to Water Generator Integrated System Real Application: A Study Case in a Worker Village in United Arab Emirates

Cattani¹,

Cattani

Magrini

2023

Applied Sciences

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“…Atmospheric water harvesting (AWH) is an alternative approach to address water scarcity and increase water security through decentralized water production. 4 Atmospheric water is estimated to be around 13 × 10 15 m 3 at any given time, therefore largely dwarfing all available sources of liquid freshwater both in volumes and availability since the majority of liquid freshwater is stored within icecaps. 5 Dew harvesting, sorbent-assisted methods, and fog capture are among the current low-tech passive AWH technologies that can be adapted to various regional geographical and meteorological conditions and generate deionized water at low footprints and energy requirements.…”

Section: Introductionmentioning

confidence: 99%

A Semi-Interpenetrating Network Sorbent of Superior Efficiency for Atmospheric Water Harvesting and Solar-Regenerated Release

Elwadood,

Farinha,

Al Wahedi

et al. 2024

ACS Appl. Mater. Interfaces

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Water is readily available nearly anywhere as vapor. Thus, atmospheric water harvesting (AWH) technologies are seen as a promising solution to support sustainable water production. This work reports a novel semi-interpenetrating network, which integrates poly(pyrrole) doped with a hygroscopic salt and 2D graphene-based nanosheets optimally assembled within an alginate matrix, capable of harvesting water from the atmosphere with a record intake of up to 7.15 g w /g s . Owing to the incorporated graphene nanosheets, natural sunlight was solely used to enable desorption, achieving an increase of the temperature of the developed network of up to 71 °C within 20 min, resulting in a water yield of 3.36 L/kg S in each cycle with quality well within the World Health Organization standard ranges. Notably, after 30 cycles of sorption and desorption, the composite hydrogel displayed unchanged water uptake and stability. This study demonstrates that atmospheric water vapor as a complementary source of water can be harvested sustainably and effectively at a minimal cost and without external energy input.

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A Super‐Hygroscopic Solar‐Regenerated Alginate‐Based Composite for Atmospheric Water Harvesting

Abd Elwadood,

Farinha,

Al Wahedi

et al. 2024

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Global water scarcity is leading to increasingly tense competition across populations. In order to complement the largely fast‐depleting fresh water sources and mitigate the challenges generated by brine discharge from desalination, atmospheric water harvesting (AWH) has emerged to support long‐term water supply. This work presents a novel alginate‐based hybrid material comprised of porous silico‐aluminophosphate‐34 (SAPO‐34) as fast‐transport channel medium as well as hydrophilicity and stability enhancer, and graphene‐based sheets as light absorber for solar‐enabled evaporation, both optimally incorporated in an alginate matrix, resulting in a composite sorbent capable of harvesting water from the atmosphere with a record intake of up to 6.85 gw gs−1. Natural sunlight is solely used to enable desorption achieving increase of the temperature of the developed network up to 60 °C and resulting in release of the sorbed water, with impurities content well below the World Health Organization (WHO) upper limits. After 30 cycles of sorption and desorption, the composite hydrogel displayed unchanged water uptake and stability. This work provides an impactful perspective toward sustainable generation of water from humidity without external energy consumption supporting the emergence of alternative water production solutions.

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Atmospheric water generation in arid regions – A perspective on deployment challenges for the Middle East

Cited by 18 publications

References 128 publications

Air to Water Generator Integrated System Real Application: A Study Case in a Worker Village in United Arab Emirates

Air to Water Generator Integrated System Real Application: A Study Case in a Worker Village in United Arab Emirates

A Semi-Interpenetrating Network Sorbent of Superior Efficiency for Atmospheric Water Harvesting and Solar-Regenerated Release

A Super‐Hygroscopic Solar‐Regenerated Alginate‐Based Composite for Atmospheric Water Harvesting

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