A novel manganese oxidizing bacterium-Aeromonas hydrophila strain DS02: Mn(II) oxidization and biogenic Mn oxides generation

被引：94

作者：

Zhang, Yue ^{[1
]}

Tang, Yankui ^{[1
,2
]}

Qin, Zhiyi ^{[1
]}

Luo, Penghong ^{[1
]}

Ma, Zhou ^{[1
]}

Tan, Mengying ^{[1
]}

Kang, Houyao ^{[1
]}

Huang, Zhining ^{[1
,3
]}

机构：

[1] Guangxi Univ, Sch Resources Environm & Mat, Nanning 530004, Peoples R China

[2] Guangxi Univ, Guangxi Key Lab Petrochem Resource Proc & Proc In, Nanning 530004, Peoples R China

[3] Guangxi Assoc Environm Protect Ind, Nanning 530004, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2019年 / 367卷

基金：

中国国家自然科学基金;

关键词：

Aeromonas hydrophila; Mn-oxidizing bacteria; Biogenic Mn oxides; Mn(II) oxidation; Mn(II) adsorption; MULTICOPPER OXIDASE; BISPHENOL-A; OXIDATION; DEGRADATION; PEROXYMONOSULFATE; SEQUESTRATION; REMOVAL; IDENTIFICATION; ACTIVATION; MECHANISMS;

D O I：

10.1016/j.jhazmat.2019.01.012

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The extensive applications of biogenic manganese oxides (BioMnOx) generated by manganese oxidizing bacteria (MOB) have attracted considerable attentions. In this study, we report on a novel MOB that has been isolated from sediments and identified as Aeromonas hydrophila strain DS02. The Mn(II) oxidation activity of strain DS02 under Mn(II) stress and the application of the associated BioMnOx products were investigated. Nearly 90.0% (495 mg L-1) of the soluble Mn(II) were removed and 45.6% (240 mg L-1) was converted to Mn(III/IV). Fitting the XPS data showed that Mn(IV)-oxide is the major component (82.0%) of the flake -shaped BioMnOx, corresponding to an average Mn oxidation number of 3.71. When the BioMnOx were coupled with the PMS activation, a 99.5% catalytic degradation of 2,4-dimethylaniline was observed after 80 min, revealing a high degradation efficiency.

引用

页码：539 / 545

页数：7

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