在固体无氧消化和有氧堆肥混合过程中,注射剂的数量调节有机甲和 humification
Yu Feng1, Chunli Luan1, Wenxuan Guo1
1Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
Journal of environmental management
|April 6, 2025
概括
在混合固态无氧消化 (SSAD) 和有氧堆肥 (AC) 系统中,将原料与注射液 (F/I) 比率优化为1.5,通过增强微生物群落,可显著提高甲生产和酸 (HA) 含量.
科学领域:
- 环境科学与工程环境科学与工程
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 有机物转化对于废物管理和资源回收至关重要.
- 结合无氧消化和有氧堆肥的混合系统提供了提高效率的潜力.
- 原料与注射量 (F/I) 的比率是影响这些系统中的微生物过程的关键参数.
研究的目的:
- 研究不同F/I比率在混合SSAD-AC系统中对有机物转换的监管影响.
- 确定最佳的F/I比率,以提高甲生产和酸 (HA) 生产.
- 阐明与优化F/I比率相关的微生物社区动态.
主要方法:
- 采用了混合固体无氧消化 (SSAD) 和有氧堆肥 (AC) 系统.
- 实验使用各种原料与注射量 (F/I) 的比率进行.
- 分析包括微生物社区分布,甲产量,有机物降解 (木质素,纤维素) 和酸 (HA) 含量.
主要成果:
- 1.5的F/I比率显著增强了无氧发酵阶段,丰富了使用乙酸的Metanosaeta.
- 在最佳的F/I比率下,体积甲产量增加了29.9%以上.
- 1.5的F/I比率促进了红素和纤维素的降解,并通过产生酸的细菌 (Bacteroidota,Actinobacteria) 的增殖,增加了HA含量33.6%至60.5%.
结论:
- 将F/I比率调整为1.5是优化SSAD-AC系统中微生物群落的有效策略.
- 这种优化显著提高了有机物甲化和化效率.
- 该研究强调了F/I比率在最大化生物气产量和生产有价值的性物质方面的关键作用.
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