Evaluation of simultaneous reduction of Fe(II)EDTA-NO and Fe(III)EDTA by a bacterial pure culture
Evaluation of simultaneous reduction of Fe(II)EDTA-NO and Fe(III)EDTA by a bacterial pure culture
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细菌纯培养物同时还原 Fe(II)EDTA-NO 和 Fe(III)EDTA 的评价
DOI：
10.1002/jctb.4112
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发表时间：
2014-01-01
影响因子：
3.4
通讯作者：
Chen, Mingxiang
中科院分区：
文献类型：
--
作者：
Dong, Xiyang;Zhang, Yu;Chen, Mingxiang
背景利用金属螯合物（如Fe（II）EDTA）吸收结合微生物还原去除一氧化氮（NO）的综合方法是最近研究的一个常见主题。本研究以副球菌（Paracoccus）为模拟微生物，研究了Fe（Ⅱ）EDTA-NO和Fe（Ⅲ）EDTA的同时还原反应，结果表明，Fe（Ⅱ）EDTA-NO对Fe（Ⅲ）EDTA的还原反应有强烈的抑制作用，而Fe（Ⅲ）EDTA的加入对Fe（Ⅱ）EDTA-NO的还原反应有促进作用。AQDS和维生素B12在0.1 mmol L-1没有显着的影响，同时减少Fe（II）EDTA-NO和Fe（III）EDTA。硫化物的加入不仅可以直接与Fe（II）EDTA-NO和Fe（III）EDTA反应，而且在生物Fe（II）EDTA-NO还原和Fe（III）EDTA还原中可能发挥多种作用。呼吸抑制剂CuCl 2抑制Fe（II）EDTA-NO还原和Fe（III）EDTA还原，而NaN 3和鱼藤酮则没有明显的抑制作用。硫化物的作用分为生物和化学的相互作用在同时还原。CuCl 2可抑制同步还原速率。(c)2013年化学工业协会
BACKGROUNDThe integrated approach of using metal chelate (e.g. Fe(II)EDTA) absorption combined with microbial reduction for nitric oxide (NO) removal has been a frequent topic of much recent study. The present study was undertaken to evaluate simultaneous Fe(II)EDTA-NO and Fe(III)EDTA with Paracoccus denitrificans as a model microorganism.RESULTSThe experimental results suggested that Fe(III)EDTA reduction was severely inhibited by Fe(II)EDTA-NO while the addition of Fe(III)EDTA could have a positive effect on the reduction of Fe(II)EDTA-NO. Riboflavin, AQDS and vitamin B12 at 0.1 mmol L-1 did not have significant effects on simultaneous reduction of Fe(II)EDTA-NO and Fe(III)EDTA. Addition of sulfide not only could directly react with Fe(II)EDTA-NO and Fe(III)EDTA but also might play multiple roles in biological Fe(II)EDTA-NO reduction and Fe(III)EDTA reduction. The respiratory inhibitor CuCl2 inhibited Fe(II)EDTA-NO reduction as well as Fe(III)EDTA reduction while NaN3 and rotenone showed no measurable effects.CONCLUSIONSThe present study showed that Fe(II)EDTA-NO reduction and Fe(III)EDTA reduction reacted upon each other. The roles of sulfide were divided in terms of biological and chemical interactions during the simultaneous reduction. CuCl2 could inhibit the simultaneous reduction rates. (c) 2013 Society of Chemical Industry