Journal
BIORESOURCE TECHNOLOGY
Volume 306, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.123077
Keywords
Quinoline degradation; Anaerobic; Microbial electrolysis cell; Anaerobic digestion; Microbial community
Funding
- National Natural Science Foundation of China (NSFC) [51608345, 51708386]
- State Key Laboratory of Pollution Control and Resource Reuse Foundation [PCRRF17021]
- Key Research and Development (R&D) Project of Shanxi Province [201903D321057, 201903D321055]
- Ministry of Environmental Protection of the People's Republic of China [2019YFC0408601, 2019YFC0408602]
Ask authors/readers for more resources
In this study, the feasibility of quinoline-wastewater treatment was investigated in a coupled microbial electrolysis cell and anaerobic digestion system (MEC-AD). Improved degradation and enhanced mineralization of quinoline were obtained, and the optimal voltage was determined to be 1.0 V. Effective removal of quinoline at relative high concentration, and a 1.5-fold increase in methane production were achieved. The results indicated that the MEC-AD could simultaneously remove carbon and nitrogen from quinoline. Gas chromatography-mass spectrometry analysis identified 2-hydroxyquinoline and 8-hydroxycoumarin as the intermediates of quinoline. The formation and degradation of metabolites were rapid, and they did not accumulate in the MEC-AD. The results of microbial community structure analysis demonstrated that the functional species were enriched and coexisted, and that the dominant bacterial genera were SM1A02, Comamonas, Desulfovibrio, Geobacter, and Actinomarinales_norank; the dominant archaeal genera were Methanocorpusculum and Nitrosoarchaeum. Furthermore, the applied current played a selective role in the enrichment of microorganisms.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available