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Functional groups characteristics of EPS in biofilm growing on different carriers

机译:不同载体上生物膜中EPS的官能团特征

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摘要

This study investigated extracellular polymeric substances (EPSs), including soluble EPS, loosely bound EPS and tightly bound EPS (TB-EPS), in biofilms growing on different carriers from a CANON system to elucidate their different compositions and characteristics. The zeta potentials of all EPS fractions of the two samples were decreased systematically. The soft combination packing (SCP) was more hydrophilic than activated carbon fiber (ACF), and it obtained a significantly higher biomass. However, Raman spec-troscopy and Fourier transform infrared spectroscopy revealed the same EPS fraction had similar functional groups between two carriers. Especially for the TB-EPS, total amount and the contents of proteins and polysaccharides in the SCP sample were much higher than those in the ACF sample. Moreover, the TB-EPS fraction of the SCP sample had better bioflocculation activity compared with that of the ACF sample. Therefore the result demonstrated that the characteristics of EPS varied from carrier to carrier.
机译:这项研究调查了在CANON系统的不同载体上生长的生物膜中的细胞外聚合物(EPS),包括可溶性EPS,松散结合的EPS和紧密结合的EPS(TB-EPS),以阐明其不同的组成和特性。两个样品的所有EPS馏分的zeta电位都系统地降低。软结合填料(SCP)比活性碳纤维(ACF)更具亲水性,并且生物量明显更高。然而,拉曼光谱和傅立叶变换红外光谱显示相同的EPS分数在两个载体之间具有相似的官能团。特别是对于TB-EPS,SCP样品中蛋白质和多糖的总量和含量均高于ACF样品。此外,与ACF样品相比,SCP样品的TB-EPS组分具有更好的生物絮凝活性。因此,结果表明EPS的特性因载体而异。

著录项

  • 来源
    《Chemosphere》 |2013年第6期|633-638|共6页
  • 作者单位

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing 400045, China College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing 400045, China College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing 400045, China College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing 400045, China College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing 400045, China College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing 400045, China College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China;

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

    Biofilm; CANON; Carrier; EPS; FT-IR; Raman;

    机译:生物膜佳能载体;每股收益;红外光谱拉曼;

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