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Response of Sulfide Autotrophic Denitrification Process and Microbial Community to Oxytetracycline Stress

SSRN, ISSN: 1556-5068
2023
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  • Usage
    110

Article Description

The coexistence of antibiotics with sulfide and nitrate is pretty common in sewage. In this study, the aim to explore the removal performance of nitrate and sulfide, response in extracellular polymers (EPS) and microbial community of the sulfide autotrophic denitrification (SAD) process under oxytetracycline (OTC) stress. In PhaseI,the SAD system showed perfect performance (nitrate removal rate greater than 92.57%, sulfide removal rate greater than 97.75%). However, when OTC concentrations of 10, 15, and 20 mg/L, the NRE decreased to approximately 75%, 37%, 11% and the SRE decreased to approximately 98%, 97%, 93%%, respectively, in PhaseIV. At OTC concentrations of 0, 10, 15, and 20 mg/L, the EPS content were 1.62, 1.75, 2.03, and 1.42 mg/gVSS, respectively. High-throughput sequencing results showed that OTC exposure led to heterotrophic denitrifying bacteria gradually dominating.

Bibliographic Details

Qiong Yue; Chenxin Tang; Xiaofan Li; Wei Lv; Hong Liu; Yongzhi Chen; Hanpeng Yue

Elsevier BV

Multidisciplinary; Sulfide autotrophic denitrification; The removal of sulfide and nitrate; Oxytetracycline; Extracellular polymeric substances; Microbial community

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