Water Consumption in Hydrogen Production Through Electrolysis: Overview, State‐of‐the‐Art, and Future Trends
電解による水素製造における水消費：概要、最先端、将来動向 (AI 翻訳)
Antonio Santos Sánchez, Gleizer Vitor Nonato, André Luís Silva, Idelfonso Bessa dos Reis Nogueira, C. Rebello, Diego Lima Medeiros, Julian David Hunt
🤖 gxceed AI 要約
日本語
グリーン水素製造における水消費に焦点を当てた総説。PEMやアルカリ電解の水消費量（平均17.5L/kg水素）を分析し、冷却用水の最適化や海水淡水化、排水再利用の可能性を指摘。水資源制約が水素プロジェクトの重要な課題であると強調。
English
This review examines water consumption in green hydrogen production via electrolysis, highlighting that PEM electrolysis consumes 17.5 L water per kg H2, with 49% used for cooling. It notes that most large projects rely on desalinated seawater, but reclaimed wastewater is emerging. Opportunities exist in cooling optimization and seawater use.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は水素社会の実現を目指しており、水資源が限られる中で、本レビューは水素製造の水消費実態や冷却最適化の手法を提供し、国内の水素プロジェクト計画に役立つ。特に、沿岸部での海水利用や排水再利用の議論は、日本の産業立地に示唆を与える。
In the global GX context
Globally, as green hydrogen scales up, water scarcity becomes a critical factor. This paper provides a needed lifecycle perspective on water use in electrolysis, relevant for project developers and policymakers integrating hydrogen into decarbonization strategies. It complements disclosure frameworks by highlighting resource dependencies.
👥 読者別の含意
🔬研究者:Researchers can benchmark water consumption values and identify research gaps in cooling optimization and alternative water sources.
🏢実務担当者:Corporate sustainability teams can use this to assess water footprint of hydrogen projects and plan for water-efficient operations.
🏛政策担当者:Policymakers should consider water availability as a siting constraint for hydrogen hubs and incentivize water recycling technologies.
📄 Abstract（原文）
Green hydrogen is increasingly positioned to play a transformational role in the decarbonization of the global economy. The number of announced green hydrogen projects is growing rapidly, with a substantial portion located in water‐stressed regions. Commercial‐scale green hydrogen projects rely on PEM and alkaline electrolysis to produce hydrogen from water, powered by electricity generated from renewable sources. The objective of this article is to provide a comprehensive review of water consumption in green hydrogen production, addressing the often‐overlooked implications of freshwater use in large‐scale electrolysis. Water resources represent a critical constraint for hydrogen production, and their availability must be carefully addressed. A review of ongoing green hydrogen projects showed that most of them rely on desalinated seawater, though reclaimed wastewater is emerging as an increasingly attractive alternative source. Currently, PEM electrolysis is the most water‐efficient technology for producing green hydrogen, consuming an average of 17.5 L of water/kg of hydrogen. Of this amount, 51% is used directly in the electrolysis process, while the remaining 49% is allocated to cooling. There are opportunities to improve water efficiency in green hydrogen production by focusing on the optimization of water consumption for cooling. The most relevant ones are the adjustment of the cycles of concentration in cooling towers, the reuse of blowdown water, and the use of adiabatic cooling systems. In coastal areas with favorable bathymetric conditions, the use of seawater could also help lower the demand for cooling water.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1002/wene.70035first seen 2026-05-26 05:03:13 · last seen 2026-05-27 05:03:10
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。