A. Al Mazrouei and A. Alami
Cite As :
A. Al Mazrouei and A. Alami, “Green hydrogen production from seawater: Technology review and future outlook,” Renewable Energy and Environmental Sustainability, vol. 6, 9, 2021.
Recognising that electrolysis demands highly pure water—approximately 9 litres per kilogram of hydrogen—the authors highlight significant considerations for water supply, particularly in arid regions such as Kuwait. They note that a large-scale hydrogen production plant generating 20,000 tonnes of hydrogen annually would consume roughly 180,000 cubic metres of water per year (about 0.5 million litres per day). Due to the necessity for purity, seawater desalination coupled with subsequent deionisation steps is critical to prevent electrolyser catalyst poisoning. Importantly, this requirement represents only a minor fraction of Kuwait’s existing extensive desalination capacity, making large-scale hydrogen production feasible and sustainable.