废水中苯胺的好氧共代谢降解实验研究
Study on aerobic co-metabolism biodegradation of aniline in wastewater
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摘要: 微生物共代谢是废水中难降解性有机物生物降解的重要方式。比较了在以苯胺溶液作为惟一碳源与能源和有共代谢底物存在下苯胺的降解过程。结果表明，共代谢显著地提高了苯胺的降解率，在32 ℃恒温条件下、利用葡萄糖作生长基质、且与苯胺的质量比为1∶6、72 h后，苯胺的降解率最高可达75.6%。再加入蛋白胨做氮源后，苯胺的降解率可提高到82.9%, COD的去除率达55.4%。Abstract: The microorganism co-metabolism is an important mode of biodegradation that can metabolize the difficult-to-degradate organic matters in wastewater. This study compared the degradation process of aniline as sole source of carbon and energy and co-metabolism degradation process of aniline.The experimental result reveals that the degradation ratio of aniline can be enhanced markedly in the co-metabolism processes. The degradation rate of aniline can reach at 75.6% after 72 hours under the following conditions: constant temperature of 32 ℃,using glucose as growth matrix, and its mass proportion with aniline is 1∶6. After using peptone as the source of nitrogen, the degradation rate of aniline and the removal rate of COD reach 82.9% and 55.4% respectively.
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Key words:
- aniline /
- aerobic co-metabolism /
- source of carbon /
- source of nitrogen /
- biodegradation
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