改性生物炭通过调节微生物社区的组装和功能来减轻蒸谷物废弃物堆肥中的损失
Yang Xu1, Shi-Peng Wang2, Wen-Shuai Zhang1
1College of Architecture and Environment, Sichuan University, Chengdu, 610065, Sichuan, PR China.
Environmental research
|August 3, 2025
概括
用KOH改性生物炭 (DBK) 显著提高了堆肥成熟度,并减少了蒸谷物废弃物堆肥中的气损失. DBK改善了微生物群落的复杂性,促进了固和产生利.
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:
- 纯生物炭 (DB) 有助于堆肥成熟和固,但它的有效性受到原料和制备的限制.
- 为了优化堆肥性能,需要对生物炭表面进行修改.
- 蒸谷物废弃物的堆肥需要策略来增强成熟度并最大限度地减少气损失.
研究的目的:
- 研究原始生物炭 (DB) 和KOH修饰生物炭 (DBK) 对堆肥成熟度和损失的影响.
- 阐明生物炭对堆肥的影响的微生物机制.
- 评估在堆肥中使用改性生物炭的经济可行性.
主要方法:
- 使用没有生物炭 (D),DB和DBK处理的蒸谷物废物进行堆肥实验.
- 使用种子发芽指数 (GI) 分析堆肥成熟度.
- 量化损失和微生物群体分析 (包括功能基因和网络分析).
主要成果:
- 具有较高的表面积和孔隙结构的DBK显著提高了堆肥成熟度 (GI 70%为23d) 和加速化 (16d).
- 德比克减少了总损失的34.13% (对D) 和10.47% (对DB).
- DBK增加了固细菌,微生物复杂性和功能冗余,确定了关键的微生物驱动因素 (Actinomadura,Chryseolinea) 和基因 (nxrABC,hao).
结论:
- 生物炭的KOH修饰 (DBK) 是提高堆肥成熟度和减轻气损失的优越策略.
- 通过增加微生物群体的复杂性,功能冗余性和特定的转化途径,DBK促进保留.
- 在堆肥中DBK的应用在经济上是有利的,提供了63.63元人民币/的净利.
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