リサイクルが製品カーボンフットプリント算定に与える影響分析：太陽光発電モジュールのケーススタディ

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:リサイクル材のカットオフ法適用と静的LCAデータベースの過大評価を定量化した実証として、CFP算定研究の手法比較に有用。

🏢実務担当者:PV調達・製造企業は、高炭素強度材（シリコン・アルミ）のリサイクル優先とリサイクル材データ収集体制の構築により、輸出市場のCFP基準対応とScope 3削減を図れる。

🏛政策担当者:動的排出係数DB、ブロックチェーン基盤のリサイクル材データ管理、算定手法の国際相互認証の整備が、CFP市場アクセス障壁への政策対応として示唆される。

Several countries, such as France, the European Union and South Korea, use carbon footprint of photovoltaic (PV) as the market access standards. Recycling enables the recycled materials to bear only the emissions from reprocessing, avoiding carbon emissions from raw material extraction, thereby significantly reducing the carbon footprint of products. This study focuses on bifacial glass-glass PV modules, selecting three kinds of recyclable materials: aluminum frames, glass, and silicon materials. Using the cut-off method, the carbon footprint of PV modules made from virgin materials was calculated, which comparing with the PV modules made from recycled materials. The carbon reduction effect of recycling was quantified. The results indicate that under the primary material pathway, the carbon footprint of a 1 kWp PV module is 351.64 kgCO2-eq, with silicon wafers, aluminum frames and glass being the main contributors. Using 85% recycled aluminum +30% recycled glass +10% recycled silicon, reduces the footprint to 303.17 kgCO2-eq, an 13.9% decrease. If the recycled content is increased to 100% recycled aluminum+50% recycled glass+30% recycled silicon , the reduction reaches 22.9%. Comparing our results, based on China’s electricity factor (0.6205 kgCO2-eq/kWh) and supply chain primary data, with an international static database (Ecoinvent 3.9) shows that the latter overestimates the carbon footprint by ~50% due to outdated electricity factors, misaligned technological representation, and neglect of circularity effects. Based on the aforementioned research findings, this paper recommends that enterprises prioritize the recycling of materials with high carbon intensity and develop data collection capabilities for recycled materials. For government authorities, it proposes establishing a dynamic database for carbon emission factors of recycled materials, building a data management platform for recycling material based on blockchain technology, and promoting the international mutual recognition of carbon accounting methods and related data for recycled materials. These recommendations aim to provide insights for China’s PV industry to address international carbon footprint barriers.

• openalex https://doi.org/10.1117/12.3129853first seen 2026-10-21 04:43:22
• semanticscholar https://doi.org/10.1117/12.3129853first seen 2026-10-23 06:10:11 · last seen 2026-11-06 05:36:44