Quorum quenching driven microbial community to biofouling control in membrane bioreactor for landfill leachate treatment

IF 8.4 1区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Membrane Science Pub Date : 2025-02-23 DOI:10.1016/j.memsci.2025.123899

Junjie Zhu , Wei Xu , Yuwei Yang , Xiaomei Su , Xiao Xiao , Feng Dong , Hailu Fu , Chongjun Chen , Jianrong Chen , Faqian Sun

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引用次数: 0

Abstract

Membrane bioreactor (MBR) has been widely applied in landfill leachate treatment, with significant efforts focusing on sustainable and non-toxic strategies for biofouling mitigation. This study investigated the potential of the quorum quenching (QQ) bacterium Brucella sp. ZJ1 to control biofouling in a MBR system treating landfill leachate. Results demonstrate that QQ-MBR extended the time to reach a transmembrane pressure of 35 kPa by 3∼10-fold compared with the control. After being operated in MBR for 40 days, QQ beads retained about 40 % of their quorum sensing (QS) signals degradation activity. Biofouling reduction was driven by surface scouring, alongside a notable QQ effect, evidenced by 27–41 % lower extracellular polymeric substance (EPS) concentrations and 60 % lower QS signal levels. Metagenomic analysis revealed that QQ beads significantly reduced QS-related and EPS production genes while increasing QQ-related genes in the membrane biocake, effectively mitigating biofouling. This study highlighted the role of QQ in reshaping the microbial community to sustainably reduce biofouling in landfill leachate MBR treatment.

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来源期刊

Journal of Membrane Science 工程技术-高分子科学

CiteScore

17.10

自引率

17.90%

发文量

1031

审稿时长

2.5 months

期刊介绍： The Journal of Membrane Science is a publication that focuses on membrane systems and is aimed at academic and industrial chemists, chemical engineers, materials scientists, and membranologists. It publishes original research and reviews on various aspects of membrane transport, membrane formation/structure, fouling, module/process design, and processes/applications. The journal primarily focuses on the structure, function, and performance of non-biological membranes but also includes papers that relate to biological membranes. The Journal of Membrane Science publishes Full Text Papers, State-of-the-Art Reviews, Letters to the Editor, and Perspectives.