| Grant number: | 23/12713-3 |
| Support Opportunities: | Regular Research Grants |
| Start date: | February 01, 2024 |
| End date: | January 31, 2026 |
| Field of knowledge: | Engineering - Chemical Engineering - Chemical Technology |
| Principal Investigator: | Valquiria de Campos |
| Grantee: | Valquiria de Campos |
| Host Institution: | Instituto de Ciência e Tecnologia. Universidade Estadual Paulista (UNESP). Campus de Sorocaba. Sorocaba , SP, Brazil |
Abstract
The goal of this work is to produce drinking water using atmospheric air as a reservoir. Atmospheric humidity and droplets are a significant source of fresh water, especially at low levels of relative humidity typical of arid environments. Synthetic superabsorbent polymers are hydrophilic three-dimensionally cross-linked materials characterized by considerable durability and significant water absorption capacity. In this study, nanoSAP was synthesized from polyacrylonitrile and a device was built for the absorption/desorption of atmospheric water. Metal-organic networks (MOFs) will be synthesized concomitantly for purposes of comparison of the prototype's atmospheric water adsorption and desorption capacity. The prototype, to be designed for a daily water capture capacity of 10 kg of nanoSAP/6L water, in a closed environment, will be created by assembling a metal structure upon which to fix the polymer plates, as well as a ventilation system. When daylight ends, the plates are placed in the desorption system in an adapted oven. The new water production system is completely passive, requiring only sunlight. The properties of hygroscopicity and thermal stability of the atmospheric water generation device will be determined, as will the service life of the nanoSAP plates (AU)
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