教育機関における電子廃棄物のライフサイクル評価：インド・カルナータカ州の工科大学における複数年の炭素排出分析と環境影響評価
Life Cycle Assessment of Institutional E-Waste: A Multi-Year Carbon Emission Analysis and Environmental Impact Evaluation at an Engineering Institution in Karnataka, India (原題)
Sathisha N. S. Syeda Nausheen Fathima
🤖 gxceed AI 要約
日本語
インド・カルナータカ州の工科大学で5学年にわたり発生した電子廃棄物を対象にLCAを実施。累積11,870.5kgのe-wasteを分析し、リサイクル処理は埋立比で約8,265kgCO₂eの純回避排出をもたらした。埋立排出係数の経年改訂や廃棄物組成の変化も示し、キャンパス単位の炭素会計フレームワークを提示する。
English
A five-year LCA of institutional e-waste at an Indian engineering college quantified 11,870.5 kg of waste. Recycling yielded ~8,265 kgCO2e net avoided emissions versus landfill. It offers a reproducible campus-level carbon accounting framework and notes evolving emission factors and shifting waste composition.
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
日本企業・大学にもScope 3カテゴリ5（廃棄物）算定の実務的示唆を与える。SSBJ開示における上流・下流排出の把握や、サーキュラーエコノミー対応の基礎データとして参考になる。
In the global GX context
Adds empirical, multi-year primary data to institutional e-waste carbon accounting, relevant to Scope 3 Category 5 and circular-economy disclosure under ISSB/CSRD. Provides a transferable methodology for campuses and public institutions in emerging economies.
👥 読者別の含意
🔬研究者:LCA手法と経年排出係数改訂の扱いに関する実証的知見を提供する。
🏢実務担当者:キャンパスや事業所の廃棄物由来Scope 3算定とリサイクル優位性の根拠として活用できる。
🏛政策担当者:教育機関のe-waste管理政策と炭素会計基準の整備に示唆を与える。
📄 Abstract（原文）
The rapidly accelerating pace of technological adoption within higher educational institutions has generated significant volumes of electronic waste (e-waste), posing substantial environmental, human health, and policy challenges. This study presents a comprehensive Life Cycle Assessment (LCA) of institutional e-waste generated over five academic years: 2018-19, 2019-20, 2021-22, 2024-25, and 2025-26 at an Engineering Institution, Mysuru, Karnataka, India. The assessment quantifies the carbon implications of two end-of-life disposal pathways: controlled recycling and landfill disposal, using category-specific greenhouse gas (GHG) emission factors derived from established WEEE benchmarks.Over the study period, a cumulative mass of 11,870.5 kg of e-waste was generated and processed. Recycling-based disposal yielded net carbon savings of 8,374 kgCO₂e, while the landfill counterfactual scenario would have resulted in emissions of 109.2 kgCO₂e, yielding an overall net avoided emission of approximately 8,265 kgCO₂e. The peak carbon savings year was 2021-22 (2,843 kgCO₂e), driven by high-emission-factor electrical laboratory equipment. A critical methodological finding is the evolution of the landfill emission factor from 0.004 to 0.04 kgCO₂e/kg in 2025-26, reflecting improved accounting of leachate toxicity and decomposition-related emissions. The study also identifies a compositional shift in waste streams from IT hardware to infrastructure-level electrical components over the study period. To the best of the authors' knowledge, this study represents the first comprehensive multi-year Life Cycle Assessment of institutional e-waste conducted at an engineering college in India. By analysing five academic years of primary institutional inventory data using category-specific emission factors, the study establishes a reproducible framework for campus-level carbon accounting and environmentally sustainable e-waste management. Findings establish a data-driven baseline for institutional e-waste carbon accounting and offer transferable recommendations for engineering institutions across India and similar developing economies.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.53365/nrfhh.737first seen 2026-09-21 05:10:13
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