Effect of gaseous mercury on nitric oxide removal performance and microbial community of a hybrid catalytic membrane biofilm reactor
Effect of gaseous mercury on nitric oxide removal performance and microbial community of a hybrid catalytic membrane biofilm reactor
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气态汞对混合催化膜生物膜反应器一氧化氮去除性能和微生物群落的影响
DOI：
10.1016/j.cej.2017.01.085
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发表时间：
2017-05
影响因子：
15.1
通讯作者：
Xiao X. L.
中科院分区：
文献类型：
--
作者：
Wei Z. S.;Wang J. B.;Huang Z. S.;He Y. M.;Pei J. L.;Xiao X. L.
研究了气态单质汞对混合催化膜生物膜反应器（HCMBR）除氮性能、微生物群落和微生物氮代谢的影响。当hg0浓度为25±5 μg·m−3时，HCMBR对NO的去除率由86.4%降至41.9%。运行80 d， NO去除率达68.8%，hg0去除率达81.7%。宏基因组测序结果显示，气态元素汞的加入影响了微生物群落结构，改变了微生物氮代谢。一些门，如偶氮螺旋藻和代尔夫提亚，数量增加了，而另一些门，如威氏门，数量减少了。Hg2+与merP结合，经merT转运，再经KatG或KatE氧化生成Hg2+。HCMBR和HCMBRHg中存在催化、硝化反硝化、氨化和生物固氮等氮代谢相关过程。
The effect of gaseous elemental mercury on nitric oxide removal performance, microbial community and microbial nitrogen metabolism of a hybrid catalytic membrane biofilm reactor (HCMBR) were evaluated. A gaseous Hg0concentration of 25 ± 5 μg·m−3reduced the NO removal efficiency of HCMBR from 86.4% to 41.9%. In 80 days of operation, NO removal efficiency was up to 68.8%, and Hg0removal efficiency achieved 81.7%, respectively. The addition of gaseous elemental mercury affected the microbial community structure and changed microbial nitrogen metabolism, as shown by metagenomics sequencing method. Some phyla, such asAzospirillum, andDelftia, increased in abundance, whereas others, such asWeeksella, decreased. Hg0could combine with merP and be transported by merT, and then be oxidized into Hg2+by KatG or KatE. The nitrogen metabolism related processes such as catalysis, nitrification and denitrification, ammoniation and biological nitrogen fixation processes, exists in HCMBR and HCMBRHg.
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影响因子：
2.7
作者：
K. Okuno;M. Hirai;M. Sugiyama;K. Haruta;M. Shoda
通讯作者：
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影响因子：
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作者：
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影响因子：
4.2
作者：
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通讯作者：
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13.6
作者：
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通讯作者：
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影响因子：
6.9
作者：
Xinyu Zhang;Ruofei Jin;Guangfei Liu;Xiyang Dong;Ji-ti Zhou;Aijie Wang
通讯作者：
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