廃水輸送における環境・エネルギー持続可能性:ペルー・リマにおける軽油からCNGへの転換へのISO 50001およびISO 14040/14044の統合
Environmental and Energy Sustainability in Wastewater Transportation: Integration of ISO 50001 and ISO 14040/14044 in the Replacement of Diesel with Compressed Natural Gas, Lima, Peru (原題)
Gamboa, Noelia Carolina Hinojosa; Nieto Rojas, Margaret Jennifer; Flores Vela, Liliam Susana; Ocaña, Claveli Chang; Huamani Taipe, Neyruth Milagros; Alvarez, Yoisdel Castillo; Rodríguez Pérez, Berl...
🤖 gxceed AI 要約
日本語
ペルー・リマの廃水輸送車隊38便を対象に、軽油からCNGへの転換とEuro V→VI車両更新をISO 50001のエネルギー管理とISO 14040/14044のLCAで統合評価した。エネルギー原単位は45.3%、直接燃焼GWP100は61.1%削減されたが、この効果は燃料転換単独には帰属できない。メタンスリップはCNG由来GWPの1.3%にとどまり、上流漏洩が15.5%を超えれば気候便益は相殺される。タイヤ交換が最大のホットスポット(64.5%/51.7%)で、30台の即時転換は10年で2530t-CO2eqを回避する。
English
A Lima wastewater fleet study jointly applied ISO 50001 energy management and ISO 14040/14044 LCA to a diesel-to-CNG switch combined with Euro V-to-VI vehicle renewal across 38 documented services. Energy intensity fell 45.3% and direct-combustion GWP100 fell 61.1%, though the effect is not attributable to fuel substitution alone. Methane slip was only 1.3% of CNG GWP100, and upstream leakage above 15.5% would cancel the climate benefit; tires remained the dominant hotspot (64.5%/51.7%).
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
日本では廃棄物・下水処理分野の車両脱炭素化はScope 1削減とSSBJ開示の対象になりつつあり、エネルギー管理とLCAを同一機能単位で結びつける本手法は、自治体・環境事業者の排出算定や車両更新投資の説明材料として参考になる。
In the global GX context
As ISSB/CSRD reporting pushes companies to substantiate Scope 1 reduction claims, this paper shows how to pair energy-management baselines with LCA under a shared functional unit—and why attributing savings to a single lever (fuel swap vs. fleet renewal) matters for credible transition disclosure.
👥 読者別の含意
🔬研究者:実運用データでエネルギー管理とLCAを統合する手法と、燃料転換効果の帰属分離という方法論的課題を提示する。
🏢実務担当者:車両更新・燃料転換の投資判断に、エネルギー原単位とLCAホットスポット(タイヤ)を組み合わせた評価枠組みを提供する。
🏛政策担当者:廃棄物・下水輸送の脱炭素政策で、上流メタン漏洩率の閾値管理と車両更新の同時効果を考慮すべき点を示す。
📄 Abstract(原文)
Evidence combining energy management and life cycle assessment of diesel-to-CNG substitution under real fleet operation remains limited. The energy and environmental assessments were jointly applied over a common functional unit—the transport of 30 m3 of non-hazardous wastewater per documented service—with an annual reference flow of 82,422 m3·km derived from 38 services (1140 m3; 5905.2 km) in Lima, Peru. A single primary dataset fed both the energy baseline (characteristic monthly consumption of 22,828 ± 1435 MJ month−1; service-level intensities of (Formula presented.) vs. (Formula presented.) MJ (m3·km)−1, (Formula presented.), (Formula presented.)) and the life cycle inventory, assessed in SimaPro v9.6.0.1 (ReCiPe 2016 Midpoint (H)) under an extended tank-to-wheel boundary with Pedigree–Monte Carlo uncertainty propagation. The transition—fuel substitution combined with Euro V-to-Euro VI platform renewal—reduced energy intensity by 45.3% and direct-combustion GWP100 by 61.1%; this integrated effect is not attributable to the fuel change alone. Methane slip contributed 1.3% of the CNG GWP100, and only an upstream leakage of 15.5% of the delivered gas would cancel the climate benefit. Tire replacement remained the dominant hotspot (64.5%/51.7%); immediate 30-vehicle fleet conversion would avoid 2530 t CO2-eq over ten years.
🔗 Provenance — このレコードを発見したソース
- Zenodo https://zenodo.org/records/23570866first seen 2026-10-23 04:32:23 · last seen 2026-10-28 04:12:29
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