Reduction of Fe(II)EDTA‐NO using Paracoccus denitrificans and changes of Fe(II)EDTA in the system
Reduction of Fe(II)EDTA‐NO using Paracoccus denitrificans and changes of Fe(II)EDTA in the system
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DOI：
10.1002/jctb.3833
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发表时间：
2013-02
影响因子：
3.4
通讯作者：
Ning Li;Yu Zhang;Yanmei Li;Mingxiang Chen;Xiyang Dong;Ji-ti Zhou
中科院分区：
文献类型：
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作者：
Ning Li;Yu Zhang;Yanmei Li;Mingxiang Chen;Xiyang Dong;Ji-ti Zhou
背景：在生物脱硝技术中，生物还原Fe(II)EDTA- no和Fe(III)EDTA是核心过程。本研究利用一株新分离的反硝化副球菌，以葡萄糖和Fe(II)EDTA为供体电子还原Fe(II)EDTA- no。为了更好地了解Fe(II)EDTA的变化规律，研究了P.反硝化菌以葡萄糖和Fe(II)EDTA为电子给体还原Fe(II)EDTA- no的过程，并研究了可能影响Fe(II)EDTA浓度的因素。结果：在Fe(II)EDTA- no的生物还原过程中，P.反硝化菌可以利用葡萄糖和Fe(II)EDTA作为电子供体。在不同阶段，原电子给体不同，从而影响体系中Fe(II)EDTA的浓度。还证明该菌株不仅以葡萄糖为电子供体还原Fe(III)EDTA，而且还分泌几种与Fe(III)EDTA反应的物质，导致溶液中Fe(II)EDTA浓度升高。结论：本研究表明，P.反硝化菌可以同时还原Fe(II)EDTA- no和Fe(III)EDTA以再生NOX吸收液。©2012化工学会
BACKGROUND: In the BioDeNOX technology for NOX removal from flue gas, bioreduction of Fe(II)EDTA-NO and Fe(III)EDTA are core processes. In this study, a newly isolated strain, Paracoccus denitrificans, was used to reduce Fe(II)EDTA-NO with glucose and Fe(II)EDTA as donor electrons. To better understand the change law of Fe(II)EDTA, the process of Fe(II)EDTA-NO reduction by P. denitrificans with glucose and Fe(II)EDTA as electron donors was investigated, and the factors that might affect Fe(II)EDTA concentration were studied. RESULTS: For the bioreduction process of Fe(II)EDTA-NO, P. denitrificans could use glucose and Fe(II)EDTA as electron donors. At different stages, primary electron donors were different, thereby affecting the concentration of Fe(II)EDTA in the system. It was also proved that this strain not only reduced Fe(III)EDTA with glucose as the electron donor but also secreted several substances that reacted with Fe(III)EDTA, resulting in increased Fe(II)EDTA concentration in the solution. CONCLUSIONS: This work has shown that P. denitrificans can reduce Fe(II)EDTA-NO and Fe(III)EDTA simultaneously to regenerate NOX absorption solution. © 2012 Society of Chemical Industry