Greenhouse Gas Emissions and Nutrient Recovery from Fish Waste During Composting and Burial

魚廃棄物の堆肥化と埋設における温室効果ガス排出と栄養回収 (AI 翻訳)

Juliana Dias de Oliveira, Ana Carolina Amorim Orrico, Luís Antonio Kioshi Aoki Inoue, Michely Tomazi, Tarcila Souza de Castro Silva, Érika do Carmo Ota, Cláudio Teodoro de Carvalho, Ranielle Nogueira da Silva Vilela, Marco Antonio Previdelli Orrico

Biomass📚 査読済 / ジャーナル2026-05-09#気候科学

DOI: 10.3390/biomass6030036

原典: https://doi.org/10.3390/biomass6030036

🤖 gxceed AI 要約

日本語

本研究は魚加工残渣の堆肥化と埋設処理におけるGHG排出を比較。バイオ炭添加でCH4とN2Oがそれぞれ15%、10%減少し、地球温暖化係数が低減。埋設処理では栄養保持が高いがGHG排出増加の可能性。バイオ炭とバルキング剤の組み合わせが有望。

English

This study compares GHG emissions from fish waste composting vs burial. Biochar amendment reduced CH4 and N2O by 15% and 10% respectively, lowering global warming potential. Burial with bulking agents improved nutrient retention but increased overall GHG impact. Combining bulking agents and biochar shows promise for mitigation.

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

日本の水産廃棄物処理への応用可能性はあるが、GX政策や開示基準との直接的な関連は薄い。バイオ炭活用は循環経済や炭素固定策として参考になる。

In the global GX context

Provides empirical emission factors for fish waste treatment, relevant for national GHG inventories and waste sector decarbonization. Biochar's mitigation potential aligns with negative emissions technologies in global climate portfolios.

👥 読者別の含意

🔬研究者:Useful for life-cycle assessment and emission factor development for organic waste management.

🏢実務担当者:Waste management operators can consider biochar and bulking agents to lower emissions.

🏛政策担当者:Informs guidelines for GHG reporting in the waste management sector.

📄 Abstract（原文）

Fish-processing residues represent a significant environmental challenge due to their high moisture and nitrogen contents, which favor greenhouse gas (GHG) emissions during degradation. This study evaluated how different waste management strategies affect GHG emissions from fish waste, including conventional composting (Bulk), composting amended with biochar (BulkBioch), burial with soil (S), and burial with soil plus sawdust (BulkS). Daily emissions of CH4, N2O, and CO2 were monitored, and cumulative emissions were modeled using generalized additive models. Composting treatments (Bulk and BulkBioch) released higher CO2, suggesting greater microbial degradation, while burial treatments developed earlier anaerobic conditions with reduced decomposition efficiency. Bulk showed the highest cumulative CH4 and CO2 emissions, whereas N2O fluxes were greater in burial methods, reaching 2.18 g N2O kg−1 TS in S. Biochar addition was associated with 15% and 10% lower CH4 and N2O emissions, respectively, and earlier stabilization of CH4 emissions. In global warming potential, BulkBioch presented the lowest climate impact (305 g CO2-eq kg−1 fish), followed by Bulk (338 g CO2-eq kg−1), whereas BulkS reached up to 599 g CO2-eq kg−1. The use of bulking agents in burial resulted in lower CH4 buildup and greater nutrient retention. Overall, combining bulking agents and biochar may represent a promising strategy to mitigate GHG emissions while supporting nutrient conservation.

🔗 Provenance — このレコードを発見したソース

crossref https://doi.org/10.3390/biomass6030036first seen 2026-05-14 22:38:28

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