有酸素埋立地での窒素管理の改善:モデルベースのアプローチを使用して窒素化へのキノコの貢献を定量化する
Rong Ye1, Weizhong Huo2, Houhu Zhang3
1Nanjing Institute of Environment Sciences, Ministry of Ecology & Environment, Nanjing 210042, China; School of Environment, Tsinghua University, Beijing 100084, China; East China Regional Technology Center of Hazardous Waste Environmental Risk Prevention and Control, 210042, China.
Waste management (New York, N.Y.)
|September 5, 2025
まとめ
キノコは埋立地での窒素循環に重要な役割を果たし,大気化下で窒素化プロセスに大きく貢献しています. 廃棄物処理における窒素管理を最適化するために,これらの真菌の貢献を理解することが重要です.
科学分野:
- 環境微生物学
- 廃棄物管理科学
- 生地化学のサイクル
背景:
- 都市部固体廃棄物 (MSW) の埋立地での効果的な窒素管理は,環境保護にとって極めて重要です.
- 廃棄物の安定化と窒素制御のための有望な戦略です.
- 埋立地の窒素化におけるキノコの役割は 十分に理解されていない.
研究 の 目的:
- シミュレートされた大気汚染埋立地システムにおける微生物の窒素化へのキノコの貢献を調査する.
- 異なった空気と基板条件下で真菌の窒素化を定量化する.
- 菌類の窒素化と窒素循環に 影響する環境要因を特定する.
主な方法:
- 制御された条件で16のシミュレートされたエア化埋立地システムを利用しました.
- 菌類が優勢な環境を作り出すために 選択的な微生物阻害を用いる.
- 改造されたロジスティックモデルを使用して,窒素化段階を記述し,真菌の貢献を定量化しました.
- 構造方程式モデリング (SEM) を用いて,窒素化の要因を分析した.
主要な成果:
- リーシャートNOxの蓄積は,定量化可能な窒素化相による三相パターンに従った.
- 総ニトリフィケーションに対する真菌の貢献は6. 46%から94. 94%の範囲で,アンモニア欠乏状態でピークに達した.
- アンモニア,酸素,気温は真菌の窒素化とその範囲に影響を与える重要な要因として特定されました.
結論:
- 菌類は窒素の変換,特に窒素化に大きく貢献しています.
- 酸素と気温が真菌の活動に及ぼす影響を考慮することで,エアレーション戦略を最適化することができます.
- アスペルギルス・フミガタスは この過程で重要なキノコ種として特定され, 埋立地の窒素管理を改善するための洞察を提供しました.
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