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纳米氧化锌对厌氧污泥中微生物内源代谢产物和膜污染性能的影响

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胡勤政, 王成燚, 汪跃, 陈琳. 纳米氧化锌对厌氧污泥中微生物内源代谢产物和膜污染性能的影响[J]. 环境工程学报, 2018, 12(6): 1609-1618. doi: 10.12030/j.cjee.201711195
引用本文: 胡勤政, 王成燚, 汪跃, 陈琳. 纳米氧化锌对厌氧污泥中微生物内源代谢产物和膜污染性能的影响[J]. 环境工程学报, 2018, 12(6): 1609-1618. doi: 10.12030/j.cjee.201711195
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HU Qinzheng, WANG Chengyi, WANG Yue, CHEN Lin. Effect of ZnO nanoparticles on production and membrane fouling performance of biomass-associated products in anaerobic sludge[J]. Chinese Journal of Environmental Engineering, 2018, 12(6): 1609-1618. doi: 10.12030/j.cjee.201711195
Citation: HU Qinzheng, WANG Chengyi, WANG Yue, CHEN Lin. Effect of ZnO nanoparticles on production and membrane fouling performance of biomass-associated products in anaerobic sludge[J]. Chinese Journal of Environmental Engineering, 2018, 12(6): 1609-1618. doi: 10.12030/j.cjee.201711195
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纳米氧化锌对厌氧污泥中微生物内源代谢产物和膜污染性能的影响

  • 1.

    河海大学环境学院，南京 210098

  • 2.

    河海大学浅水湖泊综合治理与资源开发教育部重点实验室，南京 210098

  • 基金项目:

    国家自然科学基金资助项目（51508153）

    江苏省自然科学基金资助项目（BK20150813）

Effect of ZnO nanoparticles on production and membrane fouling performance of biomass-associated products in anaerobic sludge

  • 1.

    College of Enviroment, Hohai University, Nanjing 210098, China

  • 2.

    Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China

  • Fund Project:

  • 摘要: 从厌氧污泥的角度，探究ZnO-NPs对微生物内源代谢产物(BAP)产量和膜污染性能的影响。在实验室培养的厌氧污泥中投加不同浓度的ZnO-NP，通过序批式实验和过滤实验，分别考察ZnO-NP作用下BAP的产量和膜污染性能的变化规律。发现在ZnO-NPs的短期暴露下，BAP和胞外聚合物(EPS)的总量都随着ZnO-NPs浓度的增加而增加。当ZnO-NPs浓度为300 mg·L-1时，BAP和EPS的7 d总产量相较于空白对照组，增幅分别为303.4%和112%，远远高于其他实验组。过滤实验发现，随着ZnO-NPs的增加，BAP的膜污染性能不断增加。此外，通过扫描电镜(SEM)和三维荧光光谱(EEM)分别对污泥形态和BAP特性进行研究，发现在ZnO-NPs短期暴露下，ZnO-NPs的浓度越高，其对厌氧污泥的形态和BAP特性影响越大。
    Abstract: The purpose of this study was to research the influence of ZnO-NPs on the production of biomass-associated products (BAP) in anaerobic sludge and its membrane fouling potential. Different concentrations of ZnO-NP were added in the anaerobic sludge cultured in laboratory. The change of BAP production under ZnO-NP dosage was investigated by sequencing batch reactor, and the membrane fouling potential was evaluated through dead-end filtration expeirments. The content of BAP and extracellular polymeric substances (EPS) increased with the increasing dosage of ZnO-NPs during 7 days experiments. When the concentration of ZnO-NPs was 300 mg·L-1, the increments of BAP and EPS were up to 303.4% and 112%, respectively, which was much higher than that of other experimental groups. Filtration experiments showed that the water flux for each experimental group decreased with the increase of ZnO-NPs concentration. Additionally, the morphology of sludge and BAP characteristics were studied by scanning electron microscopy (SEM) and three-dimensional fluorescence spectroscopy (EEM), respectively. Greater impact on the morphology of anaerobic sludge and BAP characteristics was found under higher ZnO-NPs concentration.
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  • 刊出日期:  2018-06-18

纳米氧化锌对厌氧污泥中微生物内源代谢产物和膜污染性能的影响

  • 1. 河海大学环境学院，南京 210098
  • 2. 河海大学浅水湖泊综合治理与资源开发教育部重点实验室，南京 210098
基金项目:

国家自然科学基金资助项目（51508153）

江苏省自然科学基金资助项目（BK20150813）

摘要: 从厌氧污泥的角度，探究ZnO-NPs对微生物内源代谢产物(BAP)产量和膜污染性能的影响。在实验室培养的厌氧污泥中投加不同浓度的ZnO-NP，通过序批式实验和过滤实验，分别考察ZnO-NP作用下BAP的产量和膜污染性能的变化规律。发现在ZnO-NPs的短期暴露下，BAP和胞外聚合物(EPS)的总量都随着ZnO-NPs浓度的增加而增加。当ZnO-NPs浓度为300 mg·L-1时，BAP和EPS的7 d总产量相较于空白对照组，增幅分别为303.4%和112%，远远高于其他实验组。过滤实验发现，随着ZnO-NPs的增加，BAP的膜污染性能不断增加。此外，通过扫描电镜(SEM)和三维荧光光谱(EEM)分别对污泥形态和BAP特性进行研究，发现在ZnO-NPs短期暴露下，ZnO-NPs的浓度越高，其对厌氧污泥的形态和BAP特性影响越大。

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