细菌死体的变化及其在不同来源的有机废物堆肥过程中在湿土转化中的作用
Wenjie Chen1, Yan Yang2, Su Chang2
1College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, 100193 Beijing, China; School of Agriculture, Food and Ecosystem Sciences, The University of Melbourne, Victoria 3010, Australia.
Bioresource technology
|November 4, 2024
概括
细菌死体碳 (BNC) 显著影响有机废物堆肥. 了解BNC动态和细菌群落是优化污水污泥,厨房废物和猪中的湿土形成的关键.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 土壤科学 土壤科学
背景情况:
- 堆肥是有机废物管理的重要过程.
- 细菌死体碳 (BNC) 在堆肥和湿土形成中扮演着被低估的角色.
- 不同的有机废物可能表现出独特的BNC动态和化途径.
研究的目的:
- 为了比较不同有机废物的BNC变化:污水污泥 (SW),厨房废物 (KW) 和猪 (PM).
- 调查BNC,细菌群落和堆肥过程中的湿土形成之间的关系.
- 阐明BNC和细菌在化过程中的特定作用.
主要方法:
- 在SW,KW和PM堆肥中分析BNC含量.
- 对化指数和聚合度的评估.
- 使用网络分析进行细菌社区分析.
- 结构方程建模以确定BNC,细菌和湿性物质之间的关系.
主要成果:
- 在废物类型中,BNC含量差异很大,其中KW显示最高水平.
- 与其他废物相比,猪 (PM) 显示出更高的化潜力.
- 关键的细菌类 (Firmicutes,Proteobacteria,Gemmatimonadota) 与BNC积累有关.
- BNC促进了KW中的酸形成;核心细菌促进了PM中的酸转化为酸.
结论:
- 细菌死体对于在有机废物堆肥过程中增强湿化至关重要.
- 不同的堆肥过程和细菌群体结构影响了化途径.
- 了解这些关系可以优化堆肥以改善土壤修改质量.
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