延长的热友性阶段促进了真菌-细菌的合作,以促进批量肥堆肥中的化
Haichao Wang1, Xiaowei Zheng1, Dong Guo1
1Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing, 100089, China.
Environmental research
|July 3, 2025
概括
扩展的热友堆肥增强了湿性物质的形成和微生物的协同作用. 最佳的料负载平衡堆肥成熟度,并减少植物毒性,以实现可持续的废物管理.
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:
- 传统的堆肥具有有限的热友性阶段,阻碍有机废物的降解和性物质 (HS) 的形成.
- 批量养堆肥 (BFC) 提供了扩展热友条件的潜力,以提高堆肥质量.
研究的目的:
- 研究BFC中扩展热友条件对微生物协同作用和HS形成的影响.
- 为了确定不同料负载 (K2,K3,K4) 对HS含量,堆肥成熟度和微生物机制的影响.
- 阐明真菌-细菌协同作用在纤维素降解和化中的作用.
主要方法:
- 批量养堆肥,每天的料负载为2,3和4公斤/天 (K2,K3,K4).
- 持续的热友条件 (45.2°C-63.1°C) 长达25天.
- 使用结构方程建模,分析含量,堆肥成熟度 (发芽指数),植物毒性,微生物群落结构 (网络分析) 和真菌-细菌相互作用.
主要成果:
- 长时间的热友条件支持真菌的生存和活动,促进微生物的相互依赖.
- K4处理产生的HS含量最高 (298.6 mg/g),而K2显示最佳成熟度 (90%的发芽指数) 与平衡的酸/酸比率 (2.11).
- 过度养 (K4) 导致植物毒性增加,表明HS积累和安全之间的权衡. 被确定为HS形成的关键驱动因素,具有显著的微生物协同作用 (K2中的94%的积极相互作用).
结论:
- 在BFC中扩展的热友条件有效地重组了微生物群落,以便有效降解和使基纤维素变质.
- 在BFC中优化料负载至关重要,以平衡高HS产量与降低高质量堆肥的植物毒性.
- 这项研究提供了对驱动堆肥质量的微生物动力学的见解,并提供了可持续食品废物管理的策略.
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