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首页> 外文期刊>RSC Advances >Evaluation of performance and microbial community successional patterns in an integrated OCO reactor under ZnO nanoparticle stress
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Evaluation of performance and microbial community successional patterns in an integrated OCO reactor under ZnO nanoparticle stress

机译：ZnO纳米粒子应力下集成OCO反应器中性能和微生物群落连续模式的评价

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摘要

An integrated OCO reactor was used to investigate the performance and microbial community successional changes under long-term exposure to relatively low levels of ZnO nanoparticles (NPs). Relatively higher concentrations of ZnO NPs (1.5 mg L-1) could adversely affect the nitrogen and phosphorus removal in the reactor. The diversity and richness of the microbial communities chronically declined with an increasing concentration of ZnO NPs higher than 1.5 mg L-1. With the elevated ZnO NPs, the phyla abundances of Proteobacteria, Firmicutes and Actinobacteria decreased slightly, whereas those of Bacteroidetes and Acidobacteria increased. Bacteroidetes and Proteobacteria were the predominant phyla in each phase (with a variation in abundance), together with some common taxa responses to ZnO NP stress as revealed by Venn diagram analysis. Some genera associated with the removal of nitrogen and phosphorus, such as Acinetobacter, Stenotrophomonas and Pseudomonas, decreased significantly. The present results are significant for expanding our understanding of the functional performance and microbial community successions of activated sludge which has experienced long-term exposure to environmentally relevant concentrations of ZnO NPs.
机译：集成的OCO反应器用于研究长期暴露于相对较低水平的ZnO纳米粒子（NPS）下的性能和微生物群落的性能。相对较高的ZnO NPS（1.5mg L-1）可能对反应器中的氮和磷除去产生不利影响。微生物群落的多样性和丰富性慢性下降，ZnO NP的浓度高于1.5mg L-1。随着ZnO NPS的升高，植物细菌的近噬菌体，迫切性和肌动菌细菌略微下降，而菌骨细菌和抗酸杆菌的含量增加。 Bragerodetes和促菌细菌是每相中的主要植物（具有丰度的变化），以及Venn图分析所揭示的ZnO NP应激的一些常见征集响应。与去除氮和磷的一些相关的一组，例如传导术，斯托科托莫纳斯和假单胞菌，显着降低。目前的结果对于扩大我们对活性污泥的功能性能和微生物群落次数的理解，这是显着的，这些结果经历了长期暴露于环境相关浓度的ZnO NPS。

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  • 来源
    《RSC Advances》 |2018年第47期|共6页
  • 作者

    Liu Zhenghui; Zhou Huifang; Liu Jiefeng; Huang Mei; Yin Xudong; Liu Zhisen; Mao Yufeng; Xie Wenyu; Li Dehao;

  • 作者单位

    Guangdong Univ Petrochem Technol Sch Environm &

    Biol Engn Maoming 525000 Guangdong Peoples R China;

    Guangdong Univ Petrochem Technol Sch Environm &

    Biol Engn Maoming 525000 Guangdong Peoples R China;

    Guangdong Univ Petrochem Technol Sch Environm &

    Biol Engn Maoming 525000 Guangdong Peoples R China;

    Guangdong Univ Petrochem Technol Sch Environm &

    Biol Engn Maoming 525000 Guangdong Peoples R China;

    Guangdong Univ Petrochem Technol Sch Environm &

    Biol Engn Maoming 525000 Guangdong Peoples R China;

    Guangdong Univ Petrochem Technol Sch Environm &

    Biol Engn Maoming 525000 Guangdong Peoples R China;

    Guangdong Univ Petrochem Technol Sch Environm &

    Biol Engn Maoming 525000 Guangdong Peoples R China;

    Guangdong Univ Petrochem Technol Sch Environm &

    Biol Engn Maoming 525000 Guangdong Peoples R China;

    Guangdong Univ Petrochem Technol Sch Environm &

    Biol Engn Maoming 525000 Guangdong Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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