Sulfate removal by Desulfovibrio sp CMX in chelate scrubbing solutions for NO removal
Sulfate removal by Desulfovibrio sp CMX in chelate scrubbing solutions for NO removal
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通过 Desulfovibrio sp CMX 在螯合物洗涤溶液中去除硫酸盐，以去除 NO
DOI：
10.1016/j.biortech.2013.06.037
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发表时间：
2013-09-01
影响因子：
11.4
通讯作者：
Shi, Zhuang
中科院分区：
文献类型：
--
作者：
Chen, Mingxiang;Zhang, Yu;Shi, Zhuang
为研究生物脱硫脱氮过程中可能引入的Fe螯合物和亚硝基络合物（Fe（II）EDTA-NO）对硫酸盐去除过程的影响，研究了硫酸盐还原菌脱硫弧菌（Desulfovibrio sp. CMX）在Fe螯合物和Fe（II）EDTA-NO存在下的硫酸盐去除能力，同时研究了Fe（II）EDTA-NO的还原作用. Fe（II）EDTA和Fe（III）EDTA的添加可以刺激硫酸盐还原性能。Fe（II）EDTA-NO对菌株有抑制作用，但CMX能通过消耗乳酸存活，去除Fe（II）EDTA-NO后恢复其硫酸盐还原活性。硫酸盐还原可以提高在较高的Fe（II）EDTA-NO浓度（2和4 mM）的乳酸盐施加在实验的中间阶段，和72.2%和62.6%的硫酸盐在182小时内被去除，分别。在这项研究中，90%以上的Fe（II）EDTA-NO（0.25-4 mM）在60小时内被去除，这比硫酸盐还原快得多。(C)2013爱思唯尔有限公司保留所有权利。
To study the effects of Fe chelate solution and nitrosyl-complex (Fe(II)EDTA-NO), which might be introduced in the simultaneous biodesulfurization and denitrification process, on the sulfate removal process, a sulfate reducing bacteria Desulfovibrio sp. CMX was investigated for its sulfate removal capacity in the presence of Fe chelate additives and Fe(II)EDTA-NO. Meanwhile, Fe(II)EDTA-NO reduction was also investigated. The addition of Fe(II)EDTA and Fe(III)EDTA could stimulate the sulfate reduction performance. Although Fe(II)EDTA-NO could inhibit the strain, CMX could survive by consuming lactate and recover its sulfate reducing activity after Fe(II)EDTA-NO removed. Sulfate reduction could be enhanced in higher Fe(II)EDTA-NO concentrations (2 and 4 mM) by lactate applied at the middle stage of the experiment, and 72.2% and 62.6% sulfate were removed in 182 h, respectively. In this study, above 90% Fe(II)EDTA-NO (0.25-4 mM) was removed less than 60 h, which was much faster than sulfate reduction. (C) 2013 Elsevier Ltd. All rights reserved.