评估激活的pyrochar促进无氧消化:性能和微生物社区
Ruixia Shen1, Zonglu Yao1, Jiadong Yu1
1Key Laboratory of Agricultural Green and Low-carbon for North China Plain, Ministry of Agriculture and Rural Affairs, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Bioresource technology
|September 11, 2023
概括
来自农业废物的二氧化碳激活型焦炭 (PCs) 增强无氧消化 (AD). 棉PC显著提高了沼气和甲产量,而玉米PC减轻了酸抑制,改善了整体微生物社区的功能.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 生物技术是生物技术.
背景情况:
- 无氧消化 (AD) 是废物管理和能源回收的关键过程.
- 从农业废物中提取的火炭 (PCs) 显示了提高AD效率的潜力.
- 了解PC激活方法和原料对AD性能的影响至关重要.
研究的目的:
- 为了研究来自玉米茎,棉和大米的CO2激活和非激活火炭对无氧消化 (AD) 性能的影响.
- 分析这些火炭在AD期间对微生物群落结构和代谢物概况的影响.
- 为了确定增强生物气生产和稳定性的特定火炭性质.
主要方法:
- 从玉米茎,棉和大米中制备CO2活性和非活性火炭.
- 进行无氧消化实验,并没有pyrochar修订.
- 测量生物气生产速度,甲含量和关键的物理化学参数 (如pH,氨).
- 分析微生物群体组成 (例如,Verrucomicrobia) 和差异代谢物,使用相关性分析等技术.
主要成果:
- 使用二氧化碳激活棉PC.实现了最大的生物气生产率 (2.2 L/L/d) 和甲含量 (73%).
- 激活PC主要在早期和中期阶段提高AD性能.
- 玉米茎PC有效降低了酸抑制,而棉PC改善了氨酸的调节.
- 在不同PC治疗组中观察到罕见属的明显差异,例如Verrucomicrobia.
- 玉米茎PC-N2与异氨基氨酸呈正相关性,与脱氧氨酸呈负相关性.
结论:
- 气体激活的焦炭在无氧消化过程中显著促进甲的产生.
- 烧炭会影响微生物群落的组成和代谢途径.
- 特定的火炭,如棉PC,为AD过程的稳定性和效率提供了有针对性的好处,例如提高生物气产量和氨调节.
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