Reference number : GC-2017-Q2-04408, amendment number : , agreement type : G, recipient legal name : Meunier, Jean-Luc (McGill University)|Meunier, Jean-Luc (Université McGill), recipient country : CA, recipient province : nan, recipient city : Quebec|Québec, recipient postal code : nan, program name english : Engage Grants for Universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : This project involves the development of an innovative strategy for water generation based on the recovery of_x000D_
atmospheric humidity in the gas phase. It tries to avoid the current hindrances in fog harvesting technologies_x000D_
based on the recovery of water micro droplets from fog and clouds, i.e. from very humid air. Achieving a low_x000D_
cost method able to collect water from ambient air even at low relative humidity (RH), down to around 20%RH_x000D_
in arid regions, would strongly impact many regions of the world particularly in the present climate change_x000D_
evolution. The proposed idea consists in forcing the water vapor in the air to nucleate heterogeneously into_x000D_
water droplets on super-hydrophillic surfaces having strongly enhanced surface area, and extracting the water_x000D_
droplets using various strategies based on hydrophobicity and porous media. Water generation from humid air_x000D_
corresponds to typical dehumidification devices. The challenge is however to generate a surface on which the_x000D_
heterogeneous nucleation, i.e. the gas-to-liquid micro-droplet generation, is made to occur under a very small_x000D_
cooling temperature below the ambient temperature. In other words, a dehumidifier requiring a minimal energy_x000D_
input. Such conditions were shown by the Plasma Processing Laboratory at McGill University to occur on_x000D_
forests of carbon nanotubes functionalized to full hydrophillicity. Water was shown to be captured, while zones_x000D_
functionalized to be hydrophobic were shown to enable the extraction of water droplets. This collaboration_x000D_
project focusses on evaluating three potential avenues for the design of water-collecting structures, all three_x000D_
based on the approach developed by PPL for functionalized forests of carbon nanotubes., program purpose french : This project involves the development of an innovative strategy for water generation based on the recovery of_x000D_
atmospheric humidity in the gas phase. It tries to avoid the current hindrances in fog harvesting technologies_x000D_
based on the recovery of water micro droplets from fog and clouds, i.e. from very humid air. Achieving a low_x000D_
cost method able to collect water from ambient air even at low relative humidity (RH), down to around 20%RH_x000D_
in arid regions, would strongly impact many regions of the world particularly in the present climate change_x000D_
evolution. The proposed idea consists in forcing the water vapor in the air to nucleate heterogeneously into_x000D_
water droplets on super-hydrophillic surfaces having strongly enhanced surface area, and extracting the water_x000D_
droplets using various strategies based on hydrophobicity and porous media. Water generation from humid air_x000D_
corresponds to typical dehumidification devices. The challenge is however to generate a surface on which the_x000D_
heterogeneous nucleation, i.e. the gas-to-liquid micro-droplet generation, is made to occur under a very small_x000D_
cooling temperature below the ambient temperature. In other words, a dehumidifier requiring a minimal energy_x000D_
input. Such conditions were shown by the Plasma Processing Laboratory at McGill University to occur on_x000D_
forests of carbon nanotubes functionalized to full hydrophillicity. Water was shown to be captured, while zones_x000D_
functionalized to be hydrophobic were shown to enable the extraction of water droplets. This collaboration_x000D_
project focusses on evaluating three potential avenues for the design of water-collecting structures, all three_x000D_
based on the approach developed by PPL for functionalized forests of carbon nanotubes., agreement title english : Generating a technology platform for water harvesting from humid air using carbon nanotube-based nanocomposites, agreement title french : Generating a technology platform for water harvesting from humid air using carbon nanotube-based nanocomposites, agreement number : EGP, agreement value : 25000.0, agreement start date : 2017-09-20, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada