Carbon footprint analysis of the whole industry chain of China's aluminum industry based on life cycle assessment
ライフサイクルアセスメントに基づく中国アルミニウム産業の全産業連鎖のカーボンフットプリント分析 (AI 翻訳)
Yan L, Zhou H, Weng K, Zhu D, Zhou Y, Wang J, Yang H
🤖 gxceed AI 要約
日本語
本研究は、中国のアルミニウム産業（ボーキサイト採掘から加工まで）を対象にライフサイクルアセスメントを用い、全工程の炭素フローを定量化した。電解アルミ工程が排出の85％以上を占め、炭素原単位は低下傾向にあるものの総排出量は増加。石炭依存の山東省や内モンゴルで排出が高く、地域差が顕著。技術会計と産業動態を統合し、脱炭素政策への示唆を提供。
English
This study uses life cycle assessment to quantify carbon flows across China's entire aluminum value chain, from bauxite mining to product processing. Electrolytic smelting accounts for over 85% of emissions; carbon intensity declined from 17.6 to 11.4 tCO2e/t Al (2012-2022) but total emissions rose. Regional disparities persist with coal-dependent provinces showing higher intensities. The work integrates technical carbon accounting with industrial dynamics, offering data-driven insights for decarbonization policy.
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
中国のアルミ産業は世界最大級で、同国のScope 3排出削減にも直結する。本稿のLCA手法は、日本の素材産業（鉄鋼・化学等）のサプライチェーン排出評価にも応用可能であり、SSBJ対応やサステナビリティ報告の実証基盤となる。
In the global GX context
China's aluminum industry is the world's largest, making this LCA-based carbon footprint analysis globally significant for industrial decarbonization. The detailed mapping of regional and process-level emissions provides a methodological template that can inform ISSB-aligned value chain disclosures and transition finance strategies in hard-to-abate sectors worldwide.
👥 読者別の含意
🔬研究者:Offers a comprehensive LCA methodology for industrial carbon footprinting, with spatio-temporal resolution useful for supply chain emission modeling.
🏢実務担当者:Provides benchmarks and region-specific emission factors that corporate sustainability teams can use for Scope 3 inventory and supplier engagement.
🏛政策担当者:Highlights emission hotspots and regional disparities, supporting targeted policy design for industrial capacity optimization and clean energy transition.
📄 Abstract（原文）
<title>Abstract</title> <p>As an industry with high emissions and high energy consumption, the aluminum sector plays a critical role in China's carbon peak strategy. This study employs a life cycle assessment (LCA) framework to systematically quantify carbon flows across the aluminum value chain, which covers bauxite mining, alumina refining, electrolytic aluminum smelting, and aluminum processing. This study presents a pioneering spatio-temporal analysis of the carbon footprint across China's entire aluminum industry chain (from bauxite mining to aluminum product processing), a systematic scope that remains under-explored in existing literature.Key findings reveal: (1) Electrolytic aluminum production dominates emissions, accounting for over 85% of total flows. Carbon intensity declined from 17.6 to 11.4 tCO₂e/t Al between 2012-2022, but the total amount still shows a rising trend of fluctuations (2)Processing emissions exhibit strong output correlation, particularly for aluminum tubes and sheets. The rapid growth of carbon emissions from aluminum processing reflects the contradiction between the expansion of the industry scale and the lagging application of green technology. (3) Regional disparities persist, with coal-dependent provinces such as Shandong and Inner Mongolia facing elevated emissions from thermal power reliance and concentrated production. The analysis integrates technical carbon accounting with industrial operational dynamics, providing empirical evidence for sector management and capacity optimization. By linking micro-level production data with macro-sustainability objectives, this work establishes a data-driven foundation for industrial restructuring aligned with national decarbonization goals.</p>
🔗 Provenance — このレコードを発見したソース
- Research Square https://doi.org/10.21203/rs.3.rs-9729033/v1first seen 2026-06-04 04:23:20
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