复合添加剂调节绿色废物堆肥中的物理化学和微生物特性:对单期和多期添加模式的比较研究
1College of Forestry, Beijing Forestry University, Beijing, 100083, PR China.
Journal of environmental management
|July 4, 2024
概括
多期添加堆肥添加剂显著加速绿色废物堆肥,将成熟时间缩短到25天. 这种方法增强了纤维素的降解,并通过优化微生物群落来改善堆肥质量.
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:
- 堆肥添加剂增强绿色废物 (GW) 堆肥,但由于作用时间短,一次性应用的有效性有限.
- 优化添加剂应用策略对于提高堆肥效率和产品质量至关重要.
研究的目的:
- 调查多期添加剂应用模式对绿色废物堆肥的影响.
- 确定添加剂 (BLP) 应用的最佳时间和比例,以加快堆肥和提高产品质量.
主要方法:
- 设计了6种治疗方法 (T1-T6),在中性 (MP) 和冷却 (CP) 期间使用不同比例的复合添加剂 (BLP).
- 分析了堆肥的物理化学特性 (温度,pH,EC,多孔性),有机物质成分 (木质素,纤维素,半纤维素),营养成分,微生物群体结构和发芽指数.
- 使用相关性分析和结构方程建模来阐明添加剂应用,微生物动态和堆肥结果之间的关系.
主要成果:
- 治疗T4,在美索菲尔期间15%的BLP和在冷却期间10%的BLP,实现了两个热友的阶段,并在25天内成熟.
- T4显著提高了红纤维素的降解率 (红: 16-53%,纤维素: 14-23%,半纤维素: 9-48%) 和改善了营养含量.
- 在T4中多期添加剂的应用促进了有益的细菌和真菌群落,从而改善了纤维素蛋白降解和营养物质的保存.
结论:
- 堆肥添加剂的多期应用优于单期应用,以加速绿色废物堆肥.
- 最佳策略 (T4) 有效地调节堆肥的物理化学特性和营养供应,培养有利于有效降解和营养保留的微生物群体.
- 这项研究为优化绿色废物堆肥中的添加剂使用提供了科学基础,以提高效率和产品质量.
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