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通过同时进行和和同化和异性脱Paracoccus denitrificans R-1的有效去除

Wei Sun^1,2, Chunchen Hu¹, Jiapeng Wu¹

¹Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, P.R. China.

|September 2, 2024

概括

帕拉科克斯 (Paracoccus denitrificans R-1) 通过同化有效地去除氨 (NH4+) 和通过脱去除 (NO3-). 这种微生物.

科学领域:

微生物生态学微生物生态学
环境微生物学环境微生物学
生物地质化学循环生物地质化学循环

背景情况:

微生物同时去除氨 (NH4+) 和 (NO3-) 对于管理至关重要.
同时去除NH4+和NO3的代谢途径尚未完全理解.
帕拉科库斯 (Paracoccus denitrificans R-1) 是一个去除过程的候选微生物.

研究的目的:

研究Paracoccus denitrificans R-1的代谢机制,以同时去除和酸盐.
为了确定在有氧和无氧条件下去除NH4+和NO3的效率.
阐明R-1菌株在转化中的同化和脱的作用.

主要方法:

在不同的条件下种植Paracoccus denitrificans R-1.
测量NH4+和NO3的去除速度.
平衡计算和15N同位素追踪实验.
基因组分析以确定相关的代谢基因.

主要成果:

菌株R-1的最大NH4+去除率为9.94毫克L-1·h-1 (有氧) 和2.91毫克L-1·h-1 (无氧),主要通过同化.
最大NO3-去除速率为18.05毫克L-1·h-1 (有氧) 和19.76毫克L-1·h-1 (无氧),包括脱.
基因组分析证实了氨同化和脱的基因存在,发现这些基因相互促进.

结论:

帕拉科克斯 (Paracoccus denitrificans R-1) 有效地同时去除氨和酸盐.
这项研究阐明了涉及的不同但互补的代谢途径 (同化和脱).
这些发现支持在单反应器系统中使用R-1菌株来有效地去除.

关键词:

生物地质化学生物地质化学水生生物学水生生物学水生科学水生科学水生科学微生物的新陈代谢微生物学的微生物.

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