期刊
ENVIRONMENTAL TECHNOLOGY
卷 42, 期 26, 页码 4090-4103出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593330.2020.1745291
关键词
Co-metabolism; enhanced anaerobic degradation; sodium citrate; polyurethane; nitrogen heterocyclic compounds
资金
- National Key Research and Development Program-China [2017YFB0602804]
The coupling system of sodium citrate and biofilm based on polyurethane demonstrated enhanced degradation efficiency on quinoline and indole, with the highest efficiency observed in the biofilm + sodium citrate reactor. Additionally, the composition of bacterial colonies and metabolic pathways of archaeal colonies varied among different reactors in the study.
A coupling system of sodium citrate and biofilm based on polyurethane was prepared to analyse the coupling enhancement degradation on quinoline and indole. Four reactors (R1: sludge, R2: sludge + sodium citrate, R3: biofilm on polyurethane, and R4: biofilm + sodium citrate) were operated 120 days to compare the degradation efficiency. During whole running phases, R4 showed high degradation efficiency on quinoline (>= 98.55%) and indole (>= 95.44%). Analysis of bacterial colony showed anaerobic sludge reactors benefited the enrichment of Aminicenantes, Levilinea, and Longilinea, while anaerobic biofilm reactors benefited the enrichment of Giesbergeria and Comamonas. Furthermore, analysis of archaea colony showed acetic acid metabolism to produce methane was the main mode in anaerobic sludge reactors, while acetic acid and hydrogen metabolism to produce methane were both the main modes in biofilm reactors. This study can provide some references for the treatment of nitrogen heterocyclic wastewater.
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