Treatment of Nitrogen Heterocyclic Compounds (NHCs) in Coking Wastewater by White-Rot Fungi
Treatment of Nitrogen Heterocyclic Compounds (NHCs) in Coking Wastewater by White-Rot Fungi
复制标题
白腐真菌处理焦化废水中的氮杂环化合物（NHCs）
DOI：
10.24850/j-tyca-2019-04-10
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发表时间：
2019-07-01
影响因子：
0.4
通讯作者：
Zhang, X.
中科院分区：
文献类型：
--
作者：
Huang, C.;Ren, D.;Zhang, X.
本文以白腐菌BP为研究对象，对实际焦化废水和模拟焦化废水中含氮杂环化合物的降解进行了研究。本研究综合分析了白腐菌对含氮杂环化合物的降解过程、作用机理、酶活性变化以及白腐菌在焦化废水中的生物量生长速率(模拟和实际)。结果表明，在模拟废水中添加氨氮和苯酚对吲哚的降解影响不大。苯酚对喹啉降解的促进作用大于氨氮的抑制作用。喹啉、吲哚和吡啶的降解速率符合零级动力学方程。实验还发现，添加镁(II)和锰(II)促进了白腐菌对实际废水中喹啉的降解，而对吡啶的降解则受到三种离子的抑制，其中以铜(II)的抑制作用最明显。与其他金属离子相比，铜(II)对白腐菌分泌的漆酶活性也有积极的影响。但对白腐菌的生长有抑制作用，而对白腐菌的生长有促进作用。白腐菌的酶活性和生物量增长速率先达到最大值，然后显着下降。
In the present study the white-rot fungi BP was selected to study the degradation of nitrogen heterocyclic compounds in real and simulated coking wastewater. The study incorporated analysis of the degradation process, mechanism of action of white-rot fungi on nitrogen heterocyclic compounds, changes of enzyme activity and white-rot fungi biomass growth rate in coking wastewater (simulated and actual). The results showed that addition of ammonia nitrogen and phenol in simulated wastewater had insignificant effects on the degradation of indole. Moreover, the promoting effect of phenol on quinoline degradation was greater than the inhibition effects of ammonia nitrogen. Degradation rates of quinoline, indole and pyridine are consistent with the zero-order kinetics equation. It was also found that the addition of Mg (II) and Mn (II) promotes the degradation of quinoline by white-rot fungi in the actual wastewater, while degradation of pyridine was inhibited by three ions, out of which the inhibition of Cu (II) was the most obvious. Cu (II) was also found to have positive effects on the levels of activity of laccase enzyme secreted by the white-rot fungi as opposed to other metal ions tested. However, it was found to have inhibitory effects on the development of white-rot fungi, while Mg (II) and Mn (II) were found to promote the development of the white-rot fungi. The activity of the enzyme and the growth rate of biomass of white-rot fungi first reached the maximum levels followed by a significant decline.