外部炭素源としての食品廃棄物の揮発性脂肪酸:脱酸化効率,微生物経路,技術的経済的な評価
Yonghui Zheng1, Enzhen Wang1, Yuying Ren2
1College of Engineering (Key Laboratory for Clean Renewable Energy Utilization Technology, Ministry of Agriculture), China Agricultural University, Beijing 100083, China.
Bioresource technology
|September 1, 2025
まとめ
食品廃棄物からの揮発性脂肪酸 (VFA) は,排水の脱窒化のための有効な代替炭素源です. この方法は窒素を大量に除去し,炭素を効率的に利用し,持続可能な処理には経済的に妥当です.
科学分野:
- 環境科学
- 環境工学
- 微生物学
背景:
- 排水処理は,脱窒化のための外部炭素源に依存しています.
- メタノールとグルコースは一般的ですが,欠点があります.
- 食品廃棄物は 持続可能な代替手段となる可能性があります
研究 の 目的:
- 廃棄物からの揮発性脂肪酸 (VFA) を,排水除去のための外部炭素源として評価する.
- VFAの投与量を最適化して性能を向上させる.
- 排水処理におけるVFAの経済的実行可能性を評価する.
主な方法:
- 実験室でのVFAの体系的な評価
- 分割された投与戦略の最適化
- 運動分析,微生物コミュニティプロファイリング,経済シミュレーション (モンテカルロ).
主要な成果:
- 最適なVFA投与で89. 16%の総窒素除去を達成しました.
- メタノールとグルコースと比較して,炭素の利用が優れ,窒素の蓄積が最小限に抑えられた.
- 主要な脱酸化物質 (アゾアカス,プセドモナス) の濃度と好ましい運動量 (7.36 mg N/g VSS·h) が確認された.
結論:
- VFAsは,排水除去のための技術的に実現可能で経済的に有効な炭素源です.
- 最適化されたVFAアプリケーションは,長期的なコスト削減 (> 70%) と経済的な強さを提供します.
- VFAは持続可能な排水処理方法の基礎となる.
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