Green Hydrogen and Biomethane Recovery from Slaughterhouse Wastes Using Temperature-Phased Anaerobic Co-Digestion
屠畜廃棄物からの温度相別嫌気性共消化によるグリーン水素とバイオメタンの回収 (AI 翻訳)
Juana Fernández-Rodríguez, Marta Muñoz, Montserrat Pérez
🤖 gxceed AI 要約
日本語
屠畜廃棄物の半液状画分と液状画分を混合し、温度相別嫌気性共消化（TPAcD）プロセスを用いて水素とメタンの回収可能性を検討。最適な混合比（25L:75S）において、酸発酵段階で可溶性CODが1280%増加し、メタン発酵段階で相乗効果により理論値を13.8%上回る収率（495.46 mL CH4/g VS）を達成。廃棄物の高度利用と再生可能エネルギー創出に有用な知見を示した。
English
This study examines two-phase anaerobic co-digestion of slaughterhouse waste fractions for green hydrogen and biomethane production. The optimal 25% liquid:75% semi-liquid mixture enhanced hydrolysis (1280% increase in soluble COD) and achieved synergistic methane yield of 495.46 mL CH4/g VS, 13.8% above theoretical additive value. Results highlight phase-separated co-digestion as a strategy for waste valorization and renewable energy recovery.
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
日本では水素社会実現やバイオマスエネルギー活用が推進されており、屠畜廃棄物からの水素・メタン回収技術は廃棄物処理と再生可能エネルギー創出の両面で関連性が高い。本研究の最適混合比や前処理効果は、国内の実証事業や施設設計に示唆を与える可能性がある。
In the global GX context
This paper provides empirical data on optimizing anaerobic co-digestion for hydrogen and methane, contributing to global efforts in circular economy and renewable energy. The phase-separated approach and synergistic mixing ratios offer practical insights for waste-to-energy facilities seeking to maximize energy recovery and reduce emissions.
👥 読者別の含意
🔬研究者:Provides experimental evidence on synergistic effects of substrate mixing and phase separation for hydrogen and methane production from slaughterhouse waste.
🏢実務担当者:Can inform operational parameters for anaerobic digestion plants to optimize hydrogen and methane yields from organic waste streams.
🏛政策担当者:Supports policies promoting waste-to-energy and hydrogen production as part of decarbonization strategies.
📄 Abstract（原文）
Rapid population growth is intensifying global energy demand and waste generation. Slaughterhouse waste is creating important environmental problems. Transforming this into renewable energy through technologies like anaerobic digestion offers a sustainable pathway to reduce environmental impacts and support the energy transition. The main objective of this study was to examine the biodegradability of the slaughterhouse semi-liquid fraction (S), slaughterhouse liquid fractions (L), and their mixtures (25%, 50%, and 75%) through a two-phase anaerobic co-digestion (TPAcD) process. Batch reactors were operated in two separate microbiological and thermal phases. In the first, a thermophilic 55 °C–acidogenic stage, biochemical hydrogen potential (BHP) assays were conducted to evaluate green hydrogen production, while in the second, a mesophilic 35 °C–methanogenic stage, biochemical methane potential (BMP) assays were carried out to assess biomethane generation. The most relevant findings revealed that while liquid fractions maximized hydrogen recovery, overall yields remained limited due to competitive metabolic pathways. Notably, the 25L:75S configuration optimized hydrolysis, with a 1280% increase in soluble COD, establishing the semi-liquid fraction as a critical organic reservoir for thermophilic–acidogenic activity. In the subsequent stage, the acidogenic pre-treatment significantly enhanced methanogenesis, where the same 25L:75S mixture exhibited a synergistic methane yield of 495.46 mL CH4/g VS. This 13.8% improvement over the theoretical additive potential confirms that strategic substrate balancing overcomes individual feedstock limitations, maximizing energy recovery in sequential anaerobic digestion. These results highlight the potential of phase-separated anaerobic co-digestion as a strategy to improve the valorization of slaughterhouse wastes.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/biomass6020027first seen 2026-05-15 19:31:41
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