Carbon footprint of water treatment technologies in arid and semi-arid regions: A comparative life cycle assessment
乾燥・半乾燥地域における水処理技術の炭素フットプリント：比較ライフサイクルアセスメント (AI 翻訳)
Akhmet Ramazan, Lyailim Taizhanova, Mohamed Salem, Samal Syrlybekkyzy, Yevgeniy Muralev
🤖 gxceed AI 要約
日本語
乾燥地域の水処理技術の炭素フットプリントを比較したLCA研究。熱脱塩が最大排出（24 kg CO2/m3）で、逆浸透は1-4 kg、廃水再利用は熱脱塩より79%低い。再生可能エネルギーで排出を90%以上削減可能。水-エネルギー-炭素ネクサスの統合を提言。
English
This LCA study compares carbon footprints of water treatment technologies in arid regions, finding thermal desalination highest (up to 24 kg CO2/m3), reverse osmosis 1-4 kg, and wastewater reuse 79% lower. Renewable energy cuts emissions by over 90%, highlighting the water-energy-carbon nexus for planning.
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
日本の水処理産業や海外展開企業にとって、省エネ型水処理技術の選択はGX戦略に直結する。特に中東・アフリカ市場での技術輸出や、国内の水インフラ更新における低炭素化の参考となる。
In the global GX context
This study provides global benchmarks for water treatment emissions, supporting ISSB-aligned disclosure of Scope 3 emissions in water-intensive sectors. It informs transition finance for water infrastructure and aligns with SDG 6 and 13, offering data for climate risk assessments.
👥 読者別の含意
🔬研究者:Provides a comprehensive comparative dataset on water treatment carbon footprints, useful for LCA methodology and water-energy nexus research.
🏢実務担当者:Offers actionable insights for selecting low-carbon water treatment technologies and integrating renewable energy to reduce operational emissions.
🏛政策担当者:Highlights the need for policy incentives for wastewater reuse and renewable-powered desalination to meet climate and water goals.
📄 Abstract（原文）
Water scarcity in arid and semi-arid regions relies on energy-intensive water treatment technologies, leading to increased greenhouse gas emissions. However, consistent cross-technology comparisons are limited. This study analyzed the carbon footprint of major water treatment systems and identified the key drivers of environmental performance. The authors reviewed 40 studies using a PRISMA-based approach and normalized the results to 1 m³ of treated water. The analysis includes seawater desalination, brackish water treatment, wastewater reuse, and conventional treatments. The carbon footprint varied from 0.07 to 24 kg CO₂-eq/m³. Thermal desalination exhibited the highest emissions (up to 24 kg CO₂-eq/m³). Reverse osmosis has lower values (approximately 1–4 kg CO₂-eq/m³). Wastewater reuse had the lowest impact, with emissions up to 79% lower than those of traditional thermal seawater desalination. Renewable energy reduces emissions by over 90%. Energy sources, salinity, plant scale, and chemical use drive these differences. These results highlight the need to integrate the water–energy–carbon nexus into water-supply planning. Wastewater reuse and renewable-powered desalination offer clear pathways for reducing environmental impacts in water-scarce regions. These findings directly support Sustainable Development Goal 6 (Clean Water and Sanitation) and Sustainable Development Goal 13 (Climate Action) by identifying low-carbon pathways for water supply in arid regions.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.clwat.2026.100306first seen 2026-08-15 04:57:54
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