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无氧共消化作为处理咖啡纸的策略:对工艺性能的洞察

Renisha Karki¹, K C Surendra², Steven Skerlos³

¹Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Department of Molecular Biosciences and Bioengineering, University of Hawai'i at Mānoa, Honolulu, HI 96822, United States.

Bioresource technology

|November 15, 2025

概括

咖啡纸通过无氧消化提供高能量潜力,但在较高负载时会出现不稳定性. 优化有机装载率和保留时间是从这种农业废物中稳定生产甲的关键.

科学领域:

环境科学环境科学
生物技术是生物技术.
废物管理废物管理

背景情况:

咖啡纸质 (CP) 是一种丰富的农业工业废物,具有高能耗.
由于抑制性化合物,CP的无氧消化 (AD) 可能是不稳定的.
牛 (CM) 是AD系统中常见的共同基质.

研究的目的:

评估CP单消化和CM共消化的性能和微生物动态.
研究增加有机载荷率 (OLR) 对消化器稳定性和甲产量的影响.
了解不同OLR和保留时间下的甲产生的社区的转变.

主要方法:

实验设置比较CP单消化,CM单消化和CP:CM共消化 (4:1 VS基础).
增加OLRs (1.0和1.5g VS L-1d-1) 的应用.
使用分子技术分析甲产量,消化器稳定性和微生物群体结构 (甲原体).

主要成果:

在稳定的条件下,CP单消化实现了比CM单消化和共消化在1.0gVS L-1d-1下更高的甲产量.
在CP丰富的系统中,甲产量在1.5gVSL-1d-1时显著下降,这表明与原料相关的抑制.
延长的保留时间 (30天) 导致了类似的甲产量,并在基于CP的系统中转向性甲原体.

结论:

咖啡纸在无氧消化过程中具有相当大的能量潜力,但对高的有机载荷率很敏感.
在较高的OLR上,原料相关的抑制有利于变性甲生成,而不是乙类路径.
缓解抑制剂的策略对于从咖啡纸中稳定高效地生产甲至关重要.

关键词:

农业工业废弃物农业工业废弃物无氧消化消化无氧消化与原料相关的抑制微生物社区的微生物社区.

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