贝粉和竹子衍生生物炭对转化,细菌群体和功能基因在猪堆肥过程中的影响
Zhuangzhuang Liu1, Shuhua Cao1, Xi He2
1College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan 410128, PR China; Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha 410128, PR China.
Bioresource technology
|May 3, 2024
概括
将贝粉末和竹子生物炭添加到猪堆肥中,可以显著减少氨和氧化排放. 这种组合可以增强留和微生物活动,提高整体堆肥效率.
科学领域:
- 环境微生物学 环境微生物学
- 土壤科学 土壤科学
- 废物管理 废物管理
背景情况:
- 堆肥猪对于营养回收至关重要,但往往会导致通过氨和氧化排放的大量气损失.
- 贝粉 (CSP) 和竹子衍生生物炭 (BDB) 是改善堆肥过程的潜在修正案.
- 了解它们对代谢和微生物群落的影响对于可持续的废物管理至关重要.
研究的目的:
- 调查CSP和BDB在猪堆肥过程中对代谢,细菌群落和功能基因的影响.
- 评估不同应用速率和CSP和BDB组合的疗效.
- 确定最佳处理方法,以减轻气损失并提高堆肥质量.
主要方法:
- 建立了四种堆肥处理:控制 (CP),5%的BDB (TP1),5%的CSP (TP2) 和2.5%的BDB + 2.5%的CSP (TP3) 组合.
- 用芽指数 (GI) 评估堆肥成熟度.
- 分数,气体排放 (NH3和N2O),细菌群体结构和功能基因使用元基因组测序进行了分析.
主要成果:
- 综合处理 (TP3) 显著改善了堆肥成熟度,发芽指数比对照组早10天达到>85%.
- TP3减少了氨和氧化排放量,分别减少了42.90%和65.9%,同时增加了总度5.43g/kg.
- 添加剂改变了细菌群体结构,促进了有益的N-保存细菌和升调化基因,同时降低了化和酸盐减少基因的调节.
结论:
- 贝粉和竹子衍生的生物炭 (TP3) 的联合应用在减少猪肥堆肥过程中的损失方面非常有效.
- 这种治疗通过调节微生物群落和功能基因来增强的保留.
- 这些发现支持使用CSP和BDB作为可持续的修改来提高堆肥效率和减轻温室气体排放.
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