Life cycle assessment of hydrochar produced from wood waste for agricultural applications
木質廃棄物から生成されたハイドロチャーの農業用途におけるライフサイクル評価 (AI 翻訳)
Ekaterina Kravchenko, Muhammad Huzaifa Raza, Dariya Privizentseva, Weiwei Niu, Tatiana Minkina, Nyamgarav Tserendorj, Shauhrat S. Chopra
🤖 gxceed AI 要約
日本語
本研究では、リンゴ剪定枝を原料として水熱炭化（HTC）によりハイドロチャーを生成し、その環境性能をLCAで評価した。堆肥化と比較して、HTCは温室効果ガス排出がマイナス（-0.797～-0.819 kg CO2-eq/kg）であり、カーボンネガティブの可能性を示した。プロセス水の再利用により収率が向上し、環境負荷が低減された。HTCは水消費や生態毒性の面で課題があるが、気候変動対策として有効である。
English
This study evaluates the environmental performance of hydrochar produced from apple tree pruning residues via hydrothermal carbonization (HTC) at 180°C and 250°C using LCA. Compared to composting, HTC achieves negative net greenhouse gas emissions (−0.797 to −0.819 kg CO2-eq per kg hydrochar), demonstrating carbon-negative potential. Process water recirculation improves hydrochar yield by up to 9.3% while reducing ecosystem burdens. Although HTC has higher impacts on water consumption and ecotoxicity, the climate benefits outweigh these trade-offs.
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
日本では農業廃棄物の有効利用が課題であり、本技術はカーボンネガティブな土壌改良材として注目される。日本のカーボンニュートラル目標や循環経済政策に貢献する可能性がある。
In the global GX context
Globally, this paper contributes to the growing interest in negative emission technologies (NETs) and carbon dioxide removal (CDR). Hydrochar as a soil amendment offers a scalable option for carbon sequestration while improving soil health. The LCA methodology provides rigorous evidence for policy support in agricultural carbon credits and bioeconomy frameworks.
👥 読者別の含意
🔬研究者:Provides a detailed LCA of hydrochar from wood waste, useful for researchers in carbon sequestration and waste valorization.
🏢実務担当者:Companies in agriculture or waste management can consider HTC for carbon-negative soil amendments and potential carbon credit revenue.
🏛政策担当者:Supports policies promoting negative emission technologies and integrating LCA into carbon accounting for agricultural biomass.
📄 Abstract（原文）
The growing need to address soil degradation and climate change requires sustainable approaches for managing agricultural biomass waste. Orchard wood residues are commonly disposed of by burning or composting, which contributes to greenhouse gas emissions and environmental risks. Hydrothermal carbonization (HTC) offers a promising alternative by converting biomass into hydrochar that can be used as a soil amendment while potentially reducing carbon emissions. In this study, apple tree pruning residues were converted into hydrochar via HTC at 180 °C and 250 °C. The environmental performance of HTC was evaluated using life cycle assessment (LCA) and compared with conventional composting scenarios. The LCA results demonstrate that HTC yields negative net greenhouse gas emissions (−0.797 to −0.819 kg CO 2 -eq per kg hydrochar), highlighting its carbon-negative potential, while composting results in positive emissions (2.212–2.675 kg CO 2 -eq). Process water recirculation further increased hydrochar yield by up to 9.3% at 180 °C and 3.3% at 250 °C, while lowering ecosystem burdens through a reduction in freshwater demand and minimizing carbon loss, thereby improving the overall environmental performance of HTC. Although hydrochar scenarios show higher impacts on categories such as water consumption and ecotoxicity compared to composting, the climate benefits strongly outweigh these trade-offs. The Monte Carlo analysis validates the reliability of negative emission results amid various uncertainties, indicating that 250 °C HTC exhibits marginally enhanced sequestration potential, albeit with increased variability.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.susmat.2026.e02111first seen 2026-07-04 04:43:17
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