農業用木質廃棄物の熱分解ガス化によるバイオ炭の環境影響と気候変動緩和：ゆりかごから墓場までの研究
Environmental Impact and Climate Change Mitigation of Biochar from Pyro-Gasification of Agricultural Wood Waste: A Cradle-to-Grave Study (原題)
Nadia Cerone, Luca Contuzzi, Giuseppe Domenico Zito, Umberto Calice, Carmine Florio, Francesco Zimbardi
🤖 gxceed AI 要約
日本語
農業用木質廃棄物の熱分解ガス化で生成したバイオ炭のライフサイクルアセスメント（LCA）を実施。基本シナリオと熱回収シナリオを比較し、バイオ炭1kgあたり-5.52kg CO2 eq.のGWP削減（植物成長時の炭素固定を含む）と、土壌貯留による1.81kg CO2 eq.の貯留を定量化。熱回収により化石燃料消費を約20MJ/kg削減できることを示した。
English
This study conducts a cradle-to-grave Life Cycle Assessment (LCA) of biochar produced from agricultural wood waste via pyro-gasification. Comparing a basic scenario with one that recovers heat, the authors find a Global Warming Potential (GWP) of -5.52 kg CO2 eq. per kg of biochar (including carbon sequestration during plant growth) and 1.81 kg CO2 eq. stored in soil. Heat recovery avoids approximately 20 MJ/kg of fossil fuel consumption, supporting biochar as an environmentally beneficial carbon storage strategy.
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、バイオ炭の土壌施用はJ-クレジット制度の対象となっており、本研究成果はLCA手法による排出削減量の定量評価に貢献する。また、農林業残渣の有効活用は、日本のカーボンニュートラル政策や地域循環共生圏の構築に資する。
In the global GX context
Globally, biochar is recognized as a negative emission technology (NET) and is increasingly integrated into carbon removal certification frameworks (e.g., Puro.earth, Verra). This LCA provides robust, experimental-based evidence on the climate mitigation potential of biochar from agricultural residues, informing carbon accounting methodologies and policy design for biochar-based carbon dioxide removal (CDR).
👥 読者別の含意
🔬研究者:Provides a detailed LCA of biochar production with experimental data, useful for refining carbon footprint models and comparing with other CDR methods.
🏢実務担当者:Offers quantitative evidence on the environmental benefits of biochar, supporting sustainability claims and potential carbon credit eligibility for agricultural waste management.
🏛政策担当者:Informs policy on biochar as a carbon removal strategy, highlighting its potential for climate mitigation and waste valorization.
📄 Abstract（原文）
The use of biochar derived from agricultural wood waste represents a promising long-term carbon storage strategy, contributing to mitigation of climate change effects while offering agronomic benefits. This residue is considered as an appropriate material since it does not compete directly with the food chain. Life Cycle Assessment (LCA) is a widely recognized methodology to evaluate the potential environmental impacts associated with all the stages of the life cycle of a product, process or service. In this study, the potential environmental impact of biochar production and its application on soil have been assessed employing a cradle-to-grave approach. The biochar was produced through the pyrogasification of residual lignocellulosic biomass in a pilot-scale plant. The LCA model has been generated employing the GaBi software (LCA for experts 10.7), in accordance with ISO LCA standards and ILCD Handbook, using the experimental results collected during the test carried out in the pilot plant. Two scenarios have been discussed: a basic scenario, involving the biochar production and application on the soil, and an improved scenario, in which by-products from biochar production are used to replace energy in thermal processes. The Global Warming Potential (GWP) of biochar production resulted in −5.52 kg CO2 eq./kg of biochar including the sequestered carbon during plant growth and 1.81 kg CO2 eq./kg of biochar stored in soil and the heat recovery resulted in approximately 20 MJ/kg of biochar of avoided consumption of fossil-based fuels. These findings provide additional support to evaluate biochar potential as an environmentally beneficial solution.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/pr14152492first seen 2026-08-22 04:43:16
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