Biochar and Hydrochar as Soil‐Based Carbon Sequestration Technologies: Implications for Greenhouse Gas Mitigation
土壌ベース炭素隔離技術としてのバイオ炭と水熱炭：温室効果ガス削減への影響 (AI 翻訳)
João Marcos Rodrigues dos Santos
🤖 gxceed AI 要約
日本語
本レビューは、バイオ炭と水熱炭の土壌炭素隔離技術としての可能性を比較。バイオ炭は長期的安定性が高い一方、水熱炭は湿潤原料処理に優れるが安定性に課題。ライフサイクル評価ではバイオ炭が一貫して気候便益を示すが、普及には方法論の標準化と長期実証が必要。
English
This review compares biochar and hydrochar as carbon sequestration technologies. Biochar offers long-term stability in soils, while hydrochar is advantageous for wet feedstocks but less stable. Life-cycle assessments show biochar consistently yields net climate benefits, though large-scale deployment requires standardized methodologies and long-term field validation.
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2030年までにGHG46%削減目標を掲げており、ネガティブエミッション技術としてのバイオ炭・水熱炭の役割が注目される。ただし、国内での普及には農地管理との統合や炭素クレジット制度との整合性が課題。SSBJや有報における炭素除去の開示基準策定にも示唆を与える。
In the global GX context
This review contributes to global discussions on negative emission technologies (NETs) and their role in net-zero pathways. It highlights the need for harmonized carbon accounting frameworks, which is relevant to ISSB and other disclosure standards that are increasingly incorporating carbon removal activities.
👥 読者別の含意
🔬研究者:Provides a comprehensive comparison of biochar and hydrochar stability, LCA, and mechanisms, informing future research on soil carbon sequestration.
🏢実務担当者:Offers insights for land managers and waste processing companies considering biochar/hydrochar for carbon credits or soil improvement.
🏛政策担当者:Highlights the need for standardized methodologies and regulatory frameworks to integrate biochar/hydrochar into national carbon accounting and climate policies.
📄 Abstract（原文）
ABSTRACT Biochar and hydrochar have emerged as promising carbon‐based amendments for enhancing soil carbon sequestration and mitigating greenhouse gas emissions. This review synthesizes and critically compares current knowledge on the production technologies, physicochemical properties, stabilization mechanisms, carbon persistence, and life‐cycle climate performance of biochar and hydrochar, emphasizing their comparative roles as negative emission technologies. Biochar, produced via pyrolysis, is characterized by highly aromatic and condensed carbon structures that confer long‐term stability in soils, frequently yielding mean residence times from centuries to millennia. Hydrochar, generated through hydrothermal carbonization, offers a more efficient path for processing wet feedstocks and waste valorization, yet generally exhibits lower intrinsic stability and greater variability in mineralization rates. The review demonstrates that carbon persistence is governed not only by molecular recalcitrance but also by soil‐mediated mechanisms, including organo‐mineral interactions, aggregate occlusion, and microbial feedbacks. Impacts on CO 2 , N 2 O, and CH 4 fluxes are strongly context‐dependent, reflecting interactions among char properties, soil texture, climate, and management practices. Life‐cycle assessments indicate that biochar systems more consistently deliver net climate benefits, whereas hydrochar performance depends on energy sources and process integration. Beyond climate mitigation, both materials provide agronomic and environmental co‐benefits, including improved soil fertility, water retention, and waste recycling. However, large‐scale deployment remains constrained by methodological heterogeneity, regulatory uncertainty, and economic barriers. The review concludes that biochar and hydrochar are complementary components of climate‐smart land management systems. Future progress depends on standardized methodologies, long‐term field experiment validation, and harmonized carbon accounting frameworks enabling reliable contributions to global net‐zero pathways. Policy alignment will be decisive for responsible and equitable global deployment.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.1002/jpln.70100first seen 2026-07-25 06:27:38
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