| Literature DB >> 30913434 |
Jinhui Huang1, Yanling Gu2, Guangming Zeng3, Ying Yang2, Yichen Ouyang2, Lixiu Shi2, Yahui Shi2, Kaixin Yi2.
Abstract
In this paper, the immobilized quorum quenching (QQ) bacteria - microbial bag was added to a short-period membrane bioreactor (MBR) and its antifouling ability and mechanism were studied by monitoring the changes in transmembrane pressure (TMP), along with the production of N-acyl-homoserine lactones (AHLs), extracellular polymeric substance (EPS) and soluble microbial products (SMP). The QQ bacteria showed efficient mitigation of TMP increase in different membrane fouling stages. In the control MBR group, the TMP reached 43 kPa on the 4th day, while in the experimental group, TMP of QQ-MBR was only 18 kPa at the same time. The detection result of EPS and SMP content of protein and polysaccharide in MBRs showed that QQ bacteria had significant inhibitory effects on EPS and SMP. Also, the QQ bacterial exhibited excellent AHLs degradation rate in MBR reaction tank.Entities:
Keywords: Antifouling; Biofilm; MBR; Quorum quenching; Quorum sensing
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Year: 2019 PMID： 30913434 DOI： 10.1016/j.biortech.2019.03.082
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642