Deeper investigation on methane generation from synthetic wastewater containing oxytetracycline in a scale up acidic anaerobic baffled reactor

Chunxing Li, Ruming Wang, Xiaoyong Yang, Mingdian Zhou, Xiaofang Pan, Guanjing Cai, Yifeng Zhang, Gefu Zhu*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Acidic anaerobic digestion attracted much attention and interest due to its significant advantage in wastewater treatment. In the present study, methanogenic fermentation was successfully operated under acidic condition during treating wastewater containing oxytetracycline (OTC) in a scale up anaerobic baffled reactor (ABR). After start-up process, the pH value in the first compartment was 4.60 with high activity of methanogenesis. After stabilization, different OTC loading of 1.0, 3.3 and 5.0 g/m3/d was added in the influent for OTC removal. The resulted showed that OTC addition had little impact on the methane generation with whole COD and OTC removal rate of 95% and 60%, respectively. The microbial analysis, OTC addition could significantly influence the bacteria and archaea communities. To be more specific, Methanosaeta showed the highest relative abundance and tolerance to OTC under acidic condition. The present work supplied deeper insights into methane generation from acidic condition during wastewater containing OTC treatment.
Original languageEnglish
Article number125156
JournalBioresource Technology
Volume333
Number of pages9
ISSN0960-8524
DOIs
Publication statusPublished - 2021

Keywords

  • Anaerobic digestion
  • Acidic methanogen
  • Antibiotic wastewater
  • Oxytetracycline
  • Anaerobic baffled reactor

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