微生物強化炭層メタン技術によるクリーンコール利用の実現：進展、批判的評価、今後の展望
Achieving clean coal utilization via microbially enhanced coalbed methane technology: Progress, critical assessment and future perspectives (原題)
Tao Sheng, Yu Changxing, Jiaxing Meng, Sun Caiyu, Huang Linlin, Li Lixin, Yang Chunxue
🤖 gxceed AI 要約
日本語
本レビューは、微生物強化炭層メタン（MECBM）技術を網羅的に整理し、メタン生成量を左右する石炭基質特性と微生物環境パラメータを検討している。前処理・栄養刺激・微生物強化という主要経路の機構と限界を分析し、IPCCガイドラインに基づく炭素排出会計で各経路の削減貢献を定量化した。栄養刺激が理論上最大の削減効率（0.75〜6%）を示す一方、メタン転換率の低さから実際の削減寄与は理論限界を大きく下回ると結論づけている。
English
This review synthesizes microbially enhanced coalbed methane (MECBM) technology, examining coal matrix properties and microbial parameters that govern methane yields. It categorizes pretreatment, nutrient stimulation, and microbial enhancement pathways, analyzing their mechanisms and limits, and applies IPCC-based carbon accounting to quantify mitigation contributions. Nutrient stimulation shows the highest theoretical reduction (0.75–6%), yet actual contributions remain far below theoretical limits due to low methane conversion rates.
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
日本は石炭火力の段階的縮小と水素・アンモニア混焼を進める一方、海外炭への依存が続く。本稿の炭素会計手法は、資源保有国での炭層メタン回収やCCUS案件の削減効果評価に際し、日本企業の投資判断や移行金融の対象評価に示唆を与える。
In the global GX context
As global disclosure frameworks (ISSB, CSRD) push for credible transition claims, this review's IPCC-based accounting of MECBM routes offers a template for assessing whether coal-related mitigation technologies qualify as genuine transition finance. It also informs the debate on fossil-fuel abatement pathways in emerging economies.
👥 読者別の含意
🔬研究者:MECBMの技術経路と炭素会計の現状を整理し、今後の研究課題（動的適応、統合戦略、LCA）を明確化する。
🏢実務担当者:石炭関連資産を持つ企業が、微生物メタン回収の削減ポテンシャルと限界を理解し、移行計画の妥当性検討に活用できる。
🏛政策担当者:石炭からのメタン回収を気候政策や移行金融の対象とする際、IPCC準拠の会計手法と実効性の限界を参考にできる。
📄 Abstract（原文）
Abstract As a predominant global fossil fuel, the conventional utilization of coal is characterized by low energy conversion efficiency, intensive carbon emissions, and significant environmental pollution. Microbially Enhanced Coalbed Methane (MECBM) technology, which leverages microbial processes to transform coal into clean biomethane, offers a promising paradigm for the sustainable and green utilization of coal resources. This paper provides a comprehensive review of the critical factors influencing methane yields, encompassing coal matrix properties and microbial environmental parameters. Building on this foundation, we categorize and synthesize the principal technological pathways of MECBM: coal pretreatment (physical, chemical, and biological), nutrient stimulation, and microbial enhancement. The underlying mechanisms, enhancement efficacy, and inherent limitations of these technologies are rigorously analyzed. Notably, a carbon emission accounting approach based on IPCC guidelines is applied to quantify the carbon reduction contributions of various technological routes. Under a direct carbon displacement accounting framework, various MECBM technologies are evaluated, among which nutrient stimulation exhibited the highest theoretical mitigation efficiency (ranging from 0.75% to 6%, excluding indirect emissions from reagent production, energy consumption, and microbial cultivation). Furthermore, lignite is identified as an experimental substrate with substantial potential for carbon footprint reduction. However, the overall carbon reduction contribution remains well below theoretical limits, primarily because of low methane conversion rates. Finally, this review summarizes the prevailing scientific and engineering challenges facing MECBM and proposes future research trajectories, including dynamic adaptive studies, integrated technological strategies, and life cycle carbon reduction assessments.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1002/ep.70715first seen 2026-10-02 04:58:14
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