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Research Articles

Effects of naphthalene stress on treatment performance and microbial community in SBR reactor

  • GUO Xiaoxiao ,
  • LI Zong ,
  • GUO Qiucui ,
  • LIU Bingxin ,
  • CHANG Zhankun ,
  • CAO Bing ,
  • LIU Xinchun
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  • College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China

Received date: 2023-12-12

  Revised date: 2024-03-29

  Online published: 2024-04-24

Abstract

This study built a sequencing batch reactor (SBR) in the laboratory, and added different concentrations of naphthalene to form gradient concentration stress. The reactor ran for a total of 166 d. The effects of naphthalene stress on the operating condition of the SBR, extracellular polymeric substances (EPS), and microbial community were studied. The results showed that: 1) Naphthalene stress improved the denitrification performance and total nitrogen removal rate of the reactor; 2) Naphthalene stress promoted the production of EPS, especially protein Ⅰ, fulvic acid, and humic acid; 3) Naphthalene stress affected the diversity and composition of microbial community and increased the abundance of naphthalene degrading genes.

Cite this article

GUO Xiaoxiao , LI Zong , GUO Qiucui , LIU Bingxin , CHANG Zhankun , CAO Bing , LIU Xinchun . Effects of naphthalene stress on treatment performance and microbial community in SBR reactor[J]. Journal of University of Chinese Academy of Sciences, 2025 , 42(6) : 758 -768 . DOI: 10.7523/j.ucas.2024.015

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