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在试点规模的污水污泥堆肥中,用Bacillus subtilis TLO3进行基因组信息化生物增量可以改善成熟度,营养循环和重金属排毒

Omar Khelil¹, Slimane Choubane¹, Nour El Houda Bounouala²

¹Higher School of Biological Sciences of Oran, P.O. Box 1042, Saim Mohamed, Emir Abdelkader District, Oran, 31000, Algeria; Aquaculture and Bioremediation Laboratory (AQUABIOR), University of Oran1 Ahmed BENBELLA, P.O. Box 1524, El M'Naouer, 31000, Oran, Algeria.

The Science of the total environment

|January 13, 2026

概括

使用Bacillus subtilis TLO3的基因组信息生物增量加速了污水污泥的堆肥,提高了稳定性和营养保留. 这种方法显著减少了污染物,使其能够安全地回收成有机肥,并支持循环生物经济的目标.

科学领域:

环境微生物学环境微生物学
生物技术是生物技术.
土壤科学土壤科学

背景情况:

污水污泥堆肥面临着不完整稳定,营养损失和污染物风险等挑战,阻碍了安全的再利用.
生物增量策略有可能提高堆肥效率和安全性,但需要优化.

研究的目的:

评估一种基因组信息的多阶段生物增量策略,使用Bacillus subtilis TLO3进行增强的污水污泥堆肥.
评估生物增量对堆肥效率,养分保留,环境安全和污染物减少的影响.

主要方法:

试点规模的堆肥试验 (∼150公斤堆),比较常规多阶段注射,单次晚期注射和未注射的对照.
基因组信息的Bacillus subtilis TLO3功能分析,以确定堆肥过程中相关的基因.
监测热友条件,有机物转化,含量,微生物种群,发芽指数和重金属度.

主要成果:

定期的生物增量维持了热友条件 (>55°C) 超过14天,加速有机物转化 (48.9%的TOC减少) 和增加含量 (68.7%的TKN增加) 到第42天.
观察到可视化菌群的显著丰富 (增长约8倍),支持增强的保留.
提高了环境安全,发芽率高 (Lactuca sativa: 135.15%,Raphanus sativus: 131%) 和重金属度大幅降低 (Cd -92%,Pb -48.5%,Cu -47.3%),符合欧盟限制.

结论:

用Bacillus subtilis TLO3进行基因组信息化生物增量有效地加速了堆肥稳定,并减轻了污染物风险.
这一战略使污水污泥能够按照法规回收成安全的有机肥料,为循环生物经济目标做出贡献.
对Bacillus subtilis TLO3的基因组洞察力突出显示了其在堆肥中增强分解,营养节约和重金属排毒的潜力.

关键词:

细菌子 TLO3 TLO3 生物增强是一种生物增强.功能性基因组学是一种功能性基因组学.重金属风险降低重金属风险降低植物毒性植物毒性污水污泥堆肥是指污水污泥的堆肥.

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