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首页> 外文期刊>Journal of Hazardous Materials >Application of magnetic OMS-2 in sequencing batch reactor for treating dye wastewater as a modulator of microbial community
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Application of magnetic OMS-2 in sequencing batch reactor for treating dye wastewater as a modulator of microbial community

机译：磁性OMS-2在间歇式反应器处理印染废水中微生物群落的应用。

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摘要

The potential and mechanism of synthesized magnetic octahedral molecular sieve (Fe3O4@OMS-2) nanoparticles in enhancing the aerobic microbial ability of sequencing batch reactor (SBR) for treating dye wastewater have been revealed in this study. The addition of Fe3O4@OMS-2 of 0.25 g/L enhanced the decolorization of SBRs with an operation cycle of 24h by more than 20%. The 16S rRNA gene high throughput sequencing indicated Fe3O4@OMS-2 increased the microbial richness and diversity of SBRs, and more importantly, promoted the potential dye-degrading bacteria. After a series of enriching and screening, four bacterial strains with the considerable decolorizing ability were isolated from SBRs, designating Alcaligenes faecalis FP-G1, Bacillus aryabhattai FP-F1, Escherichia ferg-usonii FP-D1 and Rhodococcus ruber FP-El, respectively. The growth and decolorization of these pure strains were promoted in the presence of Fe3O4@OMS-2, which agrees with the result of high-throughput sequencing. Monitoring dissolved Fe/Mn ions and investigating the change of oxidation states of Fe/Mn species discovered OMS-2 composition played the critical role in modulating the microbial community. The significant enhancement of Mn-oxidizing/-reducing bacteria suggested microbial Mn redox may be the key action mechanism of Fe3O4@OMS-2, which can provide numerous benefits for the microbial community and decolorization of SBRs. (C) 2017 Elsevier B.V. All rights reserved.
机译：这项研究揭示了合成的磁性八面体分子筛（Fe3O4 @ OMS-2）纳米颗粒在增强测序间歇反应器（SBR）的好氧微生物处理染料废水方面的潜力和机理。 0.25 g / L的Fe3O4 @ OMS-2的添加可增强SBR的脱色，操作周期为24h超过20％。 16S rRNA基因高通量测序表明Fe3O4 @ OMS-2增加了SBR的微生物丰富性和多样性，更重要的是，它促进了潜在的染料降解细菌。经过一系列富集和筛选后，从SBR中分离出了四个具有相当的脱色能力的细菌菌株，分别命名为粪便产碱杆菌FP-G1，阿里巴氏芽孢杆菌FP-F1，费氏大肠埃希氏菌FP-D1和红球菌FP-El。 Fe3O4 @ OMS-2的存在促进了这些纯菌株的生长和脱色，这与高通量测序的结果一致。监测溶解的Fe / Mn离子并研究Fe / Mn物种的氧化态的变化，发现OMS-2组成在调节微生物群落中起着关键作用。 Mn氧化/还原细菌的显着增强表明微生物Mn氧化还原可能是Fe3O4 @ OMS-2的关键作用机理，可以为微生物群落和SBR脱色提供许多好处。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Journal of Hazardous Materials》 |2017年第15期|36-46|共11页
  • 作者

    Pan Fei; Yu Yang; Xu Aihua; Xia Dongsheng; Sun Youmin; Cai Zhengqing; Liu Wen; Fu Jie;

  • 作者单位

    Wuhan Text Univ, Sch Environm Engn, Wuhan 430073, Hubei, Peoples R China|Wuhan Text Univ, Minist Educ, Engn Res Ctr Clean Prod Text Dyeing & Printing, Wuhan 430073, Hubei, Peoples R China;

    Wuhan Text Univ, Sch Environm Engn, Wuhan 430073, Hubei, Peoples R China;

    Wuhan Text Univ, Sch Environm Engn, Wuhan 430073, Hubei, Peoples R China;

    Wuhan Text Univ, Sch Environm Engn, Wuhan 430073, Hubei, Peoples R China;

    Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China;

    Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China;

    Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA;

    Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fe3O4@OMS-2; SBR process; X-3B dye; Functional bacteria; Decolorization;

    机译：Fe3O4 @ OMS-2;SBR法;X-3B染料;功能细菌;脱色;

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