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质量灭细菌的碳代谢特征 Rhodococcus sp. BH4 在不同碳源条件下确定生物增强效率

Yaodong Wu¹, Xiaohui Liu¹, Dongbo Liang²

¹National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Pingleyuan 100, Chaoyang, Beijing 100124, China.

|January 24, 2024

概括

细菌生物增量效率取决于碳来源. 罗多科克 (Rhodococcus sp.) 是一种植物. BH4更喜欢酸盐而不是葡萄糖,但葡萄糖的新陈代谢增强了其定量灭 (QQ) 酶. 乙酸抑制葡萄糖的使用,影响生物增量性能.

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.
污水处理污水处理污水处理

背景情况:

细菌生物增量是废水处理的关键,但碳源对微生物代谢和性能的影响尚不清楚.
罗多科克 (Rhodococcus sp.) 是一种植物. BH4利用定数灭 (QQ) 酶QsdA通过破坏定数感应 (QS) 来降低活性污泥 (AS) 的产量.

研究的目的:

为了研究Rhodococcus sp.的碳代谢特性. BH4. 在BH4.
探索不同碳来源如何影响活性污泥过程中的BH4介导生物增量.

主要方法:

在使用酸,葡萄糖或混合物的反应器中培养BH4微珠.
分析QQ活动,生物量,13C标记,迈凯利斯-门动力学和转录组测序.

主要成果:

活性污泥减少效率按照下列顺序进行:酸 > 混合物 > 葡萄糖.
乙酸的 BH4 显示出更高的 QQ 活性和生物量. 葡萄糖代谢增强了qsdA的表达,但由于碳催化剂抑制 (CCR),乙酸抑制了葡萄糖利用.
在只有葡萄糖的条件下,BH4的活力和QQ活性丧失了,而酸盐养的BH4保持了更高的性能.

结论:

碳来源的竞争力和代谢途径显著影响生物增强的有效性.
了解碳代谢和CCR对于优化细菌生物增殖策略至关重要.
罗多科克 (Rhodococcus sp.) 是一种植物. 与葡萄糖相比,BH4在活性污泥中的性能优于酸.

关键词:

生物增强是一种生物增强.碳催化剂抑制抑制碳催化剂的抑制.碳来源竞争碳来源竞争议员数量的灭.罗多科克 (Rhodococcus sp.) 是一种植物. BH4 BH4 BH4 BH4 BH4 BH4 BH4 BH4 BH4 BH4 BH4

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