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Updated: May 10, 2025

Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
加快ARG和MGE的丰富,在部分化过程中增加氨的去除,处理高强度氨废水
Heng Yu1, Weiyi Jia1, Yuqiu Luo2
1State Key Laboratory of Petroleum Pollution Control, Xi'an Shiyou University, Xi'an, China; Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, Xi'an Shiyou University, Xi'an, China.
在部分化过程中,自由氨 (FA) 和自由酸 (FNA) 增加了抗生素耐药性基因 (ARG) 和移动基因元素. 尼特罗索莫纳斯细菌是这些基因的宿主,突出了废水处理中的风险.
科学领域:
- 环境微生物学环境微生物学
- 废水处理技术 废水处理技术
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 部分化 (PN) 是处理高强度氨废水的关键.
- 自由氨 (FA) 和自由酸 (FNA) 对PN至关重要.
- 在PN期间FA和FNA在丰富抗生素耐药性基因 (ARG) 的作用尚不清楚.
研究的目的:
- 为了研究不同FA和FNA水平所驱动的不同氨去除效率 (ARE) 下的ARG的流行,移动性和宿主.
- 了解FA和FNA在稳定的PN期间对ARG丰富的影响.
主要方法:
- 在稳定的PN期间监测ARG和移动基因元素 (MGE) 丰度,以增加ARE.
- 在FA和FNA选择压力下分析ARG类型及其位置 (质粒与染色体).
- 识别与ARG和MGE相关的宿主细菌.
主要成果:
- 总的ARG和MGE随着ARE增加 (从52.2%增加到91.8%).
- 特定的ARG (氨基糖化物,细素,,硫胺) 和亚型 (bacA,ugd,sul2, baeR,aph3") -I,aph6) -I) 与ARE一起增加.
- 通过转化酶和重组酶,FA和FNA促进了ARG的传播,其中塑编码了氨基糖体/MLS,染色体携带多种药物/细素/质/米素.
- 尼特罗斯莫纳斯是与MGEs同时发生的ARG的主要宿主.
结论:
- 在PN期间,FA和FNA显著影响ARG丰富和流动性.
- 增加的ARE与更高的ARG和MGE丰度相关.
- 了解这些动态对于控制生物除过程中的ARG至关重要.
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