固定床生物膜反应器用于将有机废物单阶段生物转化为中链碳素酸
Tonanzi Barbara1, Massimi Alessio2, M Braguglia Camilla3
1Water Research Institute, National Research Council of Italy, CNR-IRSA, Area Della Ricerca RM1, Via Salaria Km 29.300, Monterotondo, 00015 Rome, Italy; National Biodiversity Future Center (NBFC), Piazza Marina 61, 90133 Palermo, Italy.
Bioresource technology
|February 17, 2026
概括
这项研究展示了一种新的固定床生物膜反应器,用于从食品废物和污水污泥中增强生产中链碳酸 (MCCA). 该系统在没有外部添加剂的情况下实现了更高的酸产量,展示了高效的有机废物回收利用.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 生物膜系统通过保留缓慢生长的微生物和增加生物质密度来改善中链碳酸盐 (MCCA) 的生产.
- 食品废弃物和污水污泥的共同发酵对MCCA生成的稳定性和效率提出了挑战.
研究的目的:
- 研究一种新型的单阶段固定床生物膜反应器,用于增强食品废物和污水污泥的共发酵.
- 为了评估系统的稳定性,代谢效率和酸产量,无需外部pH控制或电子捐赠者.
主要方法:
- 使用单级固定床生物膜反应器,以多孔的烧结玻璃作为固体支.
- 采用1:1的支与注射器比率,用于共同发酵食品废弃物和污水污泥.
- 进行了为期七十天的连续试验,通过分析分析和测序分析产量和微生物群落.
主要成果:
- 取得了62±5 gC6/kgVSfed的甲酸产量,明显高于对照组 (43.4±2.1 gC6/kgVSfed).
- 证明了增强的稳定性和代谢效率,依赖于乳酸盐和乙醇的内源性现场生产.
- 在生物膜中确认了关键链延长剂Caproiciproducens和Pseudoramibacter的选择性丰富.
结论:
- 单级固定床生物膜反应器是从复杂有机废物中生产MCCA的强大而高效的战略.
- 这种方法提供了一种可持续的方法,用于将食品废弃物和污水污泥提升为高价值化学品.
- 该系统依赖内生电子捐赠者简化了这一过程,并提高了经济可行性.
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