极端嗜热微生物接种减少炼油厂废活性污泥超嗜热好氧堆肥中NH3和N2O排放

IF 8.4 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Management Pub Date : 2025-03-12 DOI:10.1016/j.jenvman.2025.124870

Xinge Fu , Hui Zuo , Zhouhao Wang , Pengyin Shang , Zhuoyu Li , Jin Li , Yali Zhan , Qinghong Wang , Muhammad Arslan , Mohamed Gamal El-Din , Chunmao Chen

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引用次数: 0

摘要

氨（NH3）和氧化亚氮（N2O）的释放是好氧堆肥过程中氮损失的主要原因。本研究通过添加极端嗜热菌对炼油厂废活性污泥（RWAS）进行超嗜热好氧堆肥，系统研究了接种对NH3和N2O排放的影响。结果表明，接种可实现超嗜热好氧堆肥（T组），提高熟度，NH3和N2O排放量分别减少32.36%和10.17%。微生物网络分析和结构方程建模结果表明，接种改变了NH3和N2O释放的机制。常规堆肥（CK组）中氮基因和优势菌与NH3和N2O释放量呈正相关，而超嗜热堆肥（T组）中优势菌和理化因子是影响NH3和N2O释放量的主要因素。在超嗜热好氧堆肥系统中，优势菌与NH3和N2O释放的相关性减弱，导致上述气体的释放减少。

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Extreme thermophilic microbial inoculation for reducing NH3 and N2O emissions in hyperthermophilic aerobic composting of refinery waste activated sludge

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Extreme thermophilic microbial inoculation for reducing NH3 and N2O emissions in hyperthermophilic aerobic composting of refinery waste activated sludge

Ammonia (NH₃) and nitrous oxide (N₂O) release are the main causes of nitrogen loss during aerobic composting. In this study, hyperthermophilic aerobic composting of refinery waste activated sludge (RWAS) was performed by adding extreme thermophilic bacteria, and the effects of inoculation on NH₃ and N₂O emissions were systematically studied. The results revealed that inoculation achieved hyperthermophilic aerobic composting (T group), increased maturity, and reduced NH₃ and N₂O emissions by 32.36% and 10.17%, respectively. The results of microbial network analysis and structural equation modeling revealed that inoculation altered the mechanisms influencing NH₃ and N₂O release. Nitrogen genes and dominant bacteria were positively correlated with NH₃ and N₂O release during conventional composting (CK group), whereas dominant bacteria and physicochemical factors were the main factors affecting NH₃ and N₂O release during hyperthermophilic composting(T group). The correlation between the dominant bacteria and the release of NH₃ and N₂O was weakened in the hyperthermophilic aerobic composting system, resulting in a decrease in the release of the above gases.

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来源期刊

Journal of Environmental Management 环境科学-环境科学

CiteScore

13.70

自引率

5.70%

发文量

2477

审稿时长

84 days

期刊介绍： The Journal of Environmental Management is a journal for the publication of peer reviewed, original research for all aspects of management and the managed use of the environment, both natural and man-made.Critical review articles are also welcome; submission of these is strongly encouraged.