Net ecological benefits of co-processing papermaking waste into alkali-activated slag mortar building materials: a gate-to-gate LCA approach
製紙廃棄物をアルカリ活性化スラグモルタル建築材料に共処理する正味生態学的便益：ゲートツーゲートLCAアプローチ (AI 翻訳)
Teng Yi, H P Zhu
🤖 gxceed AI 要約
日本語
本研究は、製紙廃棄物と高炉スラグを共処理することで、建築材料を廃棄物から資源に転換する可能性を検討。ゲートツーゲートLCAを用いて評価した結果、高率の廃棄物置換により、正味地球温暖化係数が-7.9kgCO2 eq/m³とネガティブになり、人間健康被害に対しても129%の正味環境便益が得られることを示した。埋立回避と一次材料削減の効果が化学活性化の影響を上回るためである。この研究は建設材料の脱炭素化に向けた構造的アプローチを提示している。
English
This study uses a gate-to-gate LCA to evaluate co-processing of papermaking waste and blast furnace slag into alkali-activated mortar. It finds that high-volume waste substitution achieves net-negative global warming potential (-7.9 kg CO2 eq/m³) and a 129% net environmental benefit for human health, because avoided landfill emissions and primary material production outweigh activation impacts. The work provides a structured approach to decarbonizing construction materials.
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
日本でも建設廃材のリサイクルや低炭素建材の需要が高まっている。本研究は廃棄物共処理によるCO2ネットネガティブの実証事例を提供し、日本の循環経済政策や建設業界の脱炭素化目標に示唆を与える。
In the global GX context
This study demonstrates a circular industrial model for construction materials, achieving net-negative emissions through waste co-processing. It contributes to global efforts in decarbonizing the built environment and circular economy, offering a replicable LCA framework that could inform waste management and low-carbon material policies worldwide.
👥 読者別の含意
🔬研究者:Provides a detailed LCA methodology and empirical evidence for net-negative building materials, useful for scholars in industrial ecology and sustainable construction.
🏢実務担当者:Demonstrates technical feasibility and environmental benefits of using papermaking waste in mortar, offering guidance for construction companies seeking low-carbon alternatives.
🏛政策担当者:Shows how regulatory support for waste-to-resource symbiosis can yield substantial carbon and health benefits, relevant for circular economy and construction material standards.
📄 Abstract（原文）
Global climate crisis and waste disposal costs drive the need for circular industrial models. This study investigates whether industrial symbiosis through co-disposal of papermaking waste and blast furnace slag can convert these materials from waste to resources. Using a system expansion Life Cycle Assessment framework, we assessed alkali-activated mortars based on global warming potential, water footprint, and toxic impacts. Results indicate that high-volume waste substitution significantly improves the material’s environmental profile, achieving a net-negative Global Warming Potential of − 7.9 kg CO 2 eq/m³ and a 129% net environmental benefit for human health damage compared to the baseline. These results occur because the avoidance of landfill-related greenhouse gas emissions and primary material production outweigh the impacts of chemical activation. This study outlines a structured approach to decarbonizing construction materials. It shows how technological innovation can strengthen competitiveness within circular economic systems. This work verifies the technical feasibility of regenerative material strategies and identifies activator optimization as a critical factor for advancing next-generation sustainable materials, thereby offering practical guidance to help industrial sectors meet global sustainability requirements.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1038/s41598-026-59050-4first seen 2026-06-25 04:55:44
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