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首页> 外文期刊>Journal of industrial and engineering chemistry >Development of a quorum quenching-column to control biofouling in reverse osmosis water treatment processes
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Development of a quorum quenching-column to control biofouling in reverse osmosis water treatment processes

机译：Quorum淬火柱的发展，以控制反渗透水处理过程中的生物污垢

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Biofouling is recognized as one of the most problematic fouling types in reverse osmosis (RO) processes and lead to high energy requirements and operating costs. Over the past decade, many studies on membrane bioreactor (MBR) systems for wastewater applications demonstrated that disrupting cell-cell communications among bacteria, called quorum quenching (QQ), is a promising approach to inhibit biofouling of membranes. Here, we developed the QQ-column as a novel strategy to control biofouling in RO systems. The QQ-column was prepared by incorporating a recombinant bacterial QQ strain into hydrogel beads and embedding these beads inside a column. The QQ-column was installed upstream of the RO module to degrade N-acyl homoserine lactone, a quorum sensing (QS) signal, from the feed in a laboratory-scale RO system operating in total recycle mode. The QQ-column reduced the concentrations of signal molecules by similar to 29% in an RO system and mitigated biofilm formation (38.6% reduction of cell number) on the membrane, consequently reducing the transmembrane pressure by 50.1%. These results demonstrate that integrating QQ bacteria into columns is a practical method to control biofouling in RO systems. (c) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：生物污染被认为是反渗透（RO）工艺中最有问题的污染类型之一，并导致高能耗和运行成本。在过去的十年中，许多关于膜生物反应器（MBR）系统在废水处理中应用的研究表明，破坏细菌之间的细胞间通讯，称为群体猝灭（QQ），是抑制膜生物污染的一种很有前途的方法。在这里，我们开发了QQ专栏，作为控制反渗透系统中生物污染的一种新策略。QQ柱的制备方法是将重组细菌QQ菌株加入水凝胶珠中，并将这些珠嵌入柱中。QQ柱安装在反渗透模块的上游，用于在实验室规模的反渗透系统中，在全循环模式下从进料中降解N-酰基高丝氨酸内酯，这是一种群体感应（QS）信号。QQ柱将信号分子的浓度降低了29%，与反渗透系统中的浓度相似，并减轻了膜上生物膜的形成（细胞数量减少了38.6%），从而将跨膜压力降低了50.1%。这些结果表明，将QQ菌整合到柱中是控制反渗透系统中生物污染的一种实用方法。（c） 2020年，韩国工业和工程化学学会。由爱思唯尔B.V.出版。版权所有。

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