AI Article Synopsis
- * Four different reactor setups were tested over 120 days, with R4 (biofilm + sodium citrate) showing the highest degradation rates of over 98% for quinoline and 95% for indole.
- * Bacterial and archaea colony analysis revealed that anaerobic conditions in both sludge and biofilm reactors promote different pathways for methane production, highlighting their potential in treating nitrogen heterocyclic wastewater.
Article Abstract
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 , , and , while anaerobic biofilm reactors benefited the enrichment of and . 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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| http://dx.doi.org/10.1080/09593330.2020.1745291 | DOI Listing |
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