TY - JOUR

T1 - MIL-160 as an Adsorbent for Atmospheric Water Harvesting

AU - Solovyeva, Marina

AU - Krivosheeva, Irina

AU - Gordeeva, Larisa

AU - Aristov, Yuri

N1 - This research was funded by the Russian Foundation for Basic Research (grant no. 18-29-04033) and by the Ministry of Science and Higher Education of the Russian Federation within the governmental order for Boreskov Institute of Catalysis (project AAAA-A21-121011390006-0).

PY - 2021/6

Y1 - 2021/6

N2 - Nowadays, the rapidly growing population, climate change, and environment pollution put heavy pressure on fresh water resources. The atmosphere is the immense worldwide and available water source. The Adsorptive Water Harvesting from the Atmosphere (AWHA) method is considered a promising alternative to desalination technologies for remote arid regions. The development of novel adsorbents with advanced water-adsorption properties is a prerequisite for practical realization of this method. Metal-organic frameworks (MOFs) are a novel class of porous crystalline solids that bring a great potential for AWHA due to their extremely high specific surface area, porosity, and tailored adsorption properties. This work addresses MIL-160 as a water adsorbent for AWHA. The water-adsorption equilibrium of MIL-160 was studied by volumetric method, the isosteric heat of adsorption was calculated, and finally, the potential of MIL-160 for AWHA was evaluated for climatic conditions of the deserts of Saudi Arabia, Mongolia, the Sahara, Atacama, and Mojave as reference arid regions. MIL-160 was shown to ensure a maximum specific water productivity of 0.31-0.33 g(H2O)/g(ads) per cycle. High fractions of water extracted (0.90-0.98) and collected (0.48-0.97) could be achieved at a regeneration temperature of 80 degrees C with natural cooling of the condenser by ambient air. The specific energy consumption for water production varied from 3.5 to 6.8 kJ/g, which is acceptable if solar heat is used to drive the desorption. The AWHA method employing MIL-160 is a promising way to achieve a fresh water supply in remote arid areas.

AB - Nowadays, the rapidly growing population, climate change, and environment pollution put heavy pressure on fresh water resources. The atmosphere is the immense worldwide and available water source. The Adsorptive Water Harvesting from the Atmosphere (AWHA) method is considered a promising alternative to desalination technologies for remote arid regions. The development of novel adsorbents with advanced water-adsorption properties is a prerequisite for practical realization of this method. Metal-organic frameworks (MOFs) are a novel class of porous crystalline solids that bring a great potential for AWHA due to their extremely high specific surface area, porosity, and tailored adsorption properties. This work addresses MIL-160 as a water adsorbent for AWHA. The water-adsorption equilibrium of MIL-160 was studied by volumetric method, the isosteric heat of adsorption was calculated, and finally, the potential of MIL-160 for AWHA was evaluated for climatic conditions of the deserts of Saudi Arabia, Mongolia, the Sahara, Atacama, and Mojave as reference arid regions. MIL-160 was shown to ensure a maximum specific water productivity of 0.31-0.33 g(H2O)/g(ads) per cycle. High fractions of water extracted (0.90-0.98) and collected (0.48-0.97) could be achieved at a regeneration temperature of 80 degrees C with natural cooling of the condenser by ambient air. The specific energy consumption for water production varied from 3.5 to 6.8 kJ/g, which is acceptable if solar heat is used to drive the desorption. The AWHA method employing MIL-160 is a promising way to achieve a fresh water supply in remote arid areas.

KW - adsorptive water harvesting from the atmosphere

KW - metal-organic frameworks

KW - MIL-160

KW - water vapor adsorption

KW - specific water productivity

KW - specific energy consumption

KW - METAL-ORGANIC FRAMEWORKS

KW - CLIMATE-CHANGE

KW - AIR

KW - EXTRACTION

KW - ADSORPTION

KW - RESOURCES

KW - SORBENTS

KW - DESIGN

KW - DEVICE

KW - HOT

U2 - 10.3390/en14123586

DO - 10.3390/en14123586

M3 - Article

VL - 14

JO - Energies

JF - Energies

SN - 1996-1073

IS - 12

M1 - 3586

ER -