摘要
从各种菌源中分离得到硝基苯和苯胺的高效降解菌，研究其对这２类化合物的降解规律，发现Ｃ．ｐｅｒｆｒｉｎｇｅｎｓ在厌氧条件下主要将硝基苯降解为苯胺，而Ｐｓｅｕｄｏｍｏｎａｓｍｅｎｄｏｃｉｎａ和Ｋｌｅｂｓｉｅｌａｐｎｅｕｍｏｎｉａｅ在好氧条件下可将硝基苯分解为无害化物质，但降解速度较厌氧过程慢。好氧条件下，硝基苯对苯胺的降解有明显的抑制作用，而苯胺对硝基苯的抑制作用不明显，导致混合菌对混合基质的降解速度下降。不同微生物对含硝基苯和苯胺类化合物废水的降解机理表现出明显的差异，高效的微生物应该体现在既能分解初始污染物，又能分解次级产物，实现完全无害化的目标。
The bacteria that can efficiently degrade nitrobenzene and aniline have been separated from various sources. By studing the biodegradation characteristics of these two compounds, it is found that C.perfringens can degrade nitrobenzene to aniline in anaerobic process, Pseudomonas mendocina and Klebsiella pneumonia can transform nitrobenzene to harmless substance respectively in aerobic process but the degradation rate is lower than that in anaerobic process. Nitrobenzene inhibits the degradation of aniline in aerobic condition, and the opposite effect is not obvious so that the degradation rate of mixed bacteria to mixed substances will decrease. The degradation mechanisms of different microbes for the wastewater containing nitrobenzene and aniline show sharp differences. The efficient microbes can degrade not only the initial pollutants but also the next products to harmless substances entirely.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
1999年第3期10-13,共4页
Research of Environmental Sciences
基金
国家自然科学基金
广东省自然科学基金
关键词
硝基苯
苯胺
生物降解
废水处理
Nitrobenzene
Aniline
Biodegradation
Wastewater treatment
