Consequential life cycle assessment of activated hydrochar-enhanced cement plaster from municipal waste.
都市ごみ由来の活性化ハイドロチャー強化セメントプラスターの結果的ライフサイクルアセスメント (AI 翻訳)
A. Cardarelli, C. Fabiani, E. Fanelli, Lorena Foschi, A. Pisello, Marco Barbanera
🤖 gxceed AI 要約
日本語
本研究は、都市ごみ由来の活性化ハイドロチャーを混入したセメントプラスターの結果的LCAを実施。50年間で気候変動影響を68%削減することを示し、炭素隔離、埋立回避、熱効率向上が寄与する。廃棄物由来建材の循環型・低炭素代替としての可能性を実証。
English
This consequential LCA evaluates a cement plaster incorporating activated hydrochar from municipal solid waste. The cradle-to-grave analysis shows a 68% reduction in climate change impacts over 50 years, driven by biogenic carbon sequestration, carbonation, avoided landfill emissions, and thermal efficiency gains. The findings support hydrochar-based plasters as a circular, low-carbon alternative in construction.
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
日本の建設セクターでは、廃棄物由来の建材活用が循環経済の促進に貢献します。本論文のハイドロチャーを利用したセメントプラスターは、炭素隔離と熱効率向上により温室効果ガス排出を大幅に削減できる有望な技術です。日本の廃棄物処理・建設業界にとって参考となる知見を提供しています。
In the global GX context
This LCA demonstrates a novel circular material solution for the construction sector, achieving significant climate impact reduction through waste valorization and carbon sequestration. It provides robust evidence for policymakers and industry aiming to decarbonize building materials, relevant to global initiatives like the EU's Circular Economy Action Plan and the IEA's net-zero pathway for buildings.
👥 読者別の含意
🔬研究者:This consequential LCA provides a rigorous methodology for assessing waste-derived construction materials, highlighting the importance of system boundaries and scenario analysis.
🏢実務担当者:Construction firms can consider hydrochar-enhanced plaster as a viable low-carbon alternative, with potential for improved thermal performance and waste diversion.
🏛政策担当者:This study supports policies promoting circular economy in construction, offering quantitative evidence for carbon reduction benefits of using municipal waste in building materials.
📄 Abstract（原文）
This study presents a comprehensive life cycle assessment (LCA) of a novel cement-lime-based plaster incorporating 4 wt% activated hydrochar (AHYP), produced via hydrothermal carbonization of the stabilized organic fraction (SOF) of municipal solid waste (MSW) using landfill leachate as the process medium. A consequential LCA approach, following ISO 14040/14044 standards, was adopted to capture the broader environmental consequences of substituting conventional materials and streams with waste-derived alternatives. Two system levels were assessed: a cradle-to-gate analysis per kilogram of plaster produced, and a cradle-to-grave comparison of a 4 cm application on both sides of a reference building façade. Cradle-to-gate results identified the activation process as the most impactful stage in AHYP production. However, the benefits of avoiding waste treatment and energy savings outweighed these burdens compared to conventional cement-lime plaster (CP). Further, at the cradle-to-grave scale, AHYP reduced climate change impacts by 68% over a 50-year lifespan, driven by biogenic carbon sequestration, carbonation, avoided landfill emissions, and improved thermal efficiency. Evaluation of alternative scenarios (AS) reinforced the consistency and reliability of the findings. Higher methane recovery rates from landfill up to 50% (AS1-50%), and 64% (AS1-64%), as well as the halving of plaster's service life to 25 years (AS2) and changing gas boilers with electric heating technologies (AS3), were investigated. While these alternatives (AS1-50%, AS1-64%, AS2, AS3) slightly increased impacts relative to the Inn-Scenario, they consistently performed better than the Ref-Scenario, underscoring the sustained environmental benefits observed across different conditions. Overall, results demonstrate the promising role of hydrochar-based plasters as a circular and climate-conscious alternative in the construction sector.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1016/j.jenvman.2026.128953first seen 2026-06-29 07:05:47
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