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Application of Fluid Dynamic Gauging in the Characterization and Removal of Biofouling Deposits

机译：流体动力学测量在生物污垢表征与去除中的应用

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摘要

Green cleaning is generally defined as cleaning of a surface by consuming minimal resources in order to lessen the impact on human health and environmental quality. The main aim of this study is to perform cleaning studies of Escherichia coli biofilms grown on (ⅰ) polyethylene, (ⅱ) stainless steel, and (ⅲ) glass, to observe their removal behavior under controlled hydrodynamic conditions. The biofilms grown on the three different substrates were tested using the technique of fluid dynamic gauging, which allows for the estimation of the cohesive (within the biofilm structure) and adhesive (between biofilm and substrate) strength of the deposits. The results show that the thickness of biofilm on all substrates increases with time and plateaued at 14 days. Mature biofilms grown on glass have a stronger surface attachment than those on stainless steel and polyethylene. The results also suggest structural weakening after 21 days, implying either the death of cells or the weakening of the extracellular polymer matrix structure.
机译：绿色清洁通常被定义为通过消耗最少的资源以减轻对人类健康和环境质量的影响来清洁表面。这项研究的主要目的是对在（ⅰ）聚乙烯，（ⅱ）不锈钢和（ⅲ）玻璃上生长的大肠杆菌生物膜进行清洁研究，以观察其在受控流体动力学条件下的去除行为。使用流体动力学测量技术测试了在三种不同基材上生长的生物膜，该技术可以估算沉积物的内聚力（生物膜结构内）和粘合剂（生物膜与基材之间）的强度。结果表明，所有底物上的生物膜厚度均随时间增加，并在14天达到稳定。在玻璃上生长的成熟生物膜比在不锈钢和聚乙烯上的生物膜具有更强的表面附着力。该结果还表明21天后结构减弱，暗示细胞死亡或细胞外聚合物基质结构减弱。

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  • 来源
    《Heat Transfer Engineering》 |2015年第8期|685-694|共10页
  • 作者

    OLIVER P. W. PECK; Y. M. JOHN CHEW; MICHAEL R. BIRD; ALBERT BOLHUIS;

  • 作者单位

    Department of Chemical Engineering, University of Bath, Bath, United Kingdom;

    Department of Chemical Engineering, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom;

    Department of Chemical Engineering, University of Bath, Bath, United Kingdom;

    Department of Pharmacy and Pharmacology, University of Bath, Bath, United Kingdom;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
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