Characterization and variation of microbial community structure during the anaerobic treatment of N, N-dimethylformamide-containing wastewater by UASB with artificially mixed consortium

Zhe Kong, Lu Li, Yu You Li

研究成果: Article査読

16 被引用数 (Scopus)

抄録

A lab-scale UASB was operated successfully to anaerobically treat wastewater containing approximately 2000 mg L−1 N, N-dimethylformamide (DMF) by artificially mixing anaerobic granular sludge with DMF-degrading activated sludge. DMF was effectively degraded by the UASB under a low OLR of 1.63–4.22 g COD L−1 d−1, with over 96% DMF removal efficiency and a high methane production rate. However, the DMF-degrading ability gradually weakened along with increases in the OLR. The analysis of the microbial community structure by high-throughput sequencing revealed a decline in the abundance of the facultatively anaerobic DMF-hydrolyzing bacteria originating from activated sludge with increasing OLR, further deteriorating the methanogenic degradation of DMF. When the OLR was lowered again, the slow growth of those facultative anaerobes recovered, and slight improvements in the removal were noted. Methylotrophic methanogens utilized the intermediate products from the hydrolysis of DMF, which kept increasing in abundance throughout the entire experimental period.

本文言語English
ページ(範囲)434-444
ページ数11
ジャーナルBioresource Technology
268
DOI
出版ステータスPublished - 2018 11

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 環境工学
  • 再生可能エネルギー、持続可能性、環境
  • 廃棄物管理と処理

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