通过在有氧堆肥过程中添加外源改性矿石来减少排放的转化和相关机制
Li Zhang1, Wanying Xu1, Jiangxiang Jiang1
1College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China.
Journal of environmental management
|March 4, 2025
概括
在有氧堆肥中添加改性石 (MS650) 显著减少了氨,氧化和温室气体排放. 最佳的MS650比例为2.5%,通过保留来提高堆肥质量.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 微生物学 微生物学
背景情况:
- 堆肥对于废物管理和营养物质回收利用至关重要.
- 堆肥过程中的气损失导致环境污染和降低肥料效率.
- 磁石 (MS) 修改可以提高其表面性能,用于环境应用.
研究的目的:
- 为了研究轻燃烧的石 (MS650) 在有氧堆肥过程中对的转化的影响.
- 阐明MS650对固和气体排放的影响背后的化学和微生物机制.
- 确定MS650的最佳剂量,以减少和温室气体排放.
主要方法:
- 改性石 (MS650) 的制备,其表面积和孔径增加.
- 在不同比例的有氧堆肥实验中使用MS650.
- 测量氨 (NH3),氧化 (N2O) 和其他温室气体排放量.
- 分析转化途径,化学机制 (例如,斯特鲁维特沉,吸附) 和微生物群落转移.
主要成果:
- 补充MS650显著减少了NH3 (0.74-52.4%),N2O (29.0-57.9%) 和整体温室气体排放 (41.8-60.3%).
- 降低气排放的最佳MS650比例为2.5%,显示剂量与减排之间的负相关性.
- 斯特鲁维特沉和物理吸附被确定为固的关键化学机制.
- MS650抑制了关键细菌的生长,这些细菌参与了化,酸盐减少和脱化.
- 总有机碳,电导率和N2O水平显著影响了的功能基因和蛋白质细菌的丰富性.
结论:
- 轻燃磁石 (MS650) 在有氧堆肥过程中有效减轻和温室气体排放.
- MS650的有效性归因于通过化学机制增强留和抑制驱动气体损失的微生物过程.
- 优化MS650应用 (2.5%) 可以改善堆肥质量并减少环境影响,为废物管理提供可持续的解决方案.
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