SEAS R&D Manager Luccia Cattani explores the integration of air-to-water generator (AWG) systems into green hydrogen production via atmospheric water electrolysis, addressing critical challenges in water supply and sustainability. This study evaluates water extraction from air through atmospheric water harvesting (AWH), focusing on water quality and energy efficiency for electrolysis. Rigorous chemical analyses were conducted on water produced by a certified air-to-water integrated system, confirming compliance with electrolysis standards.
A case study on Iriomote Island demonstrated the viability of AWGs in sustainable hydrogen production, pairing a 2 MW photovoltaic field with an electrolyzer. The AWG system, tested under local climatic conditions, not only met but exceeded the electrolyzer’s water demands, highlighting its potential for scalable green hydrogen infrastructure. The research underscores the dual benefits of atmospheric water harvesting: ensuring high-purity water for electrolysis while optimizing energy use in renewable systems. These findings position air-to-water integrated systems as a pragmatic solution for water-scarce regions, advancing the decarbonization of hydrogen production.
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