Biodegradation of Dibenzofuran and Chlorophenol, and Removal of NH3-N by Microorganisms Immobilized in Polyacrylamide Pellets.
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概要
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This study was aimed at developing a biotechnological treatment to biodegrade dioxins and chlorophenols, and to remove NH<SUB>3</SUB>-N simultaneously in landfill leachate using immobilized microorganisms.<BR><I>Pseudomonas aeruginosa</I> degrading dioxins and anaerobic-aerobic sludges habituated by landfill leachate from a treatment plant were immobilized by polyacrylamide.<BR>Test result showed that biodegradability of dibenzofuran (DBF) and chlorophenols was higher under coexistence of <I>Pseudomonas aeruginosa</I> and anaerobic-aerobic sludges than that when only <I>Pseudomonas aeruginosa</I> was present. In order to establish condition for both biodegradation of DBF and 2, 4, 6-tetrachlorophenol (2, 4, 6-TCP) which has strong toxicity among chlorophenols, and removal of NH<SUB>3</SUB>-N simultaneously, we studied aerobic-anaerobic treatment and anaerobic-aerobic circulating treatment. In a continuous cultivation system, DBF and 2, 4, 6-TCP were degraded to the level of detection limits of GC-FID after a month.
- 日本環境化学会の論文
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