Fouling mechanisms of Pseudomonas putida on PES microfiltration membranes

Rosas, Irene; Collado, Sergio; Gutiérrez, Antonio; Dı́az, Mario

doi:10.1016/j.memsci.2014.04.002

Cited by 21 publications

(4 citation statements)

References 32 publications

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“…It revealed that the permeability of nascent and modified PES membranes declined rapidly at the early stage of the filtration because of bacteria adhering on the membrane surface and blocking the pores. The similar phenomenon was observed in the previous study [ 37 , 38 ]. However, the water flux reductions of PES-g-DMAEMA-DB and PES-g-DMAEMA-HB were much slower and the final water fluxes were much higher (over five times) than the nascent PES membrane.…”

Section: Resultssupporting

confidence: 92%

Surface Functionalization of Polyethersulfone Membrane with Quaternary Ammonium Salts for Contact-Active Antibacterial and Anti-Biofouling Properties

Lin

Zhao

et al. 2016

Materials

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Biofilm is a significant cause for membrane fouling. Antibacterial-coated surfaces can inhibit biofilm formation by killing bacteria. In this study, polyethersulfone (PES) microfiltration membrane was photografted by four antibiotic quaternary ammonium compounds (QACs) separately, which were synthesized from dimethylaminoethyl methacrylate (DMAEMA) by quaternization with butyl bromide (BB), octyl bromide (OB), dodecyl bromide (DB), or hexadecyl bromide (HB). XPS, ATR-FTIR, and SEM were used to confirm the surfaces’ composition and morphology. After modification, the pores on PES-g-DMAEMA-BB and PES-g-DMAEMA-OB were blocked, while PES-g-DMAEMA-DB and PES-g-DMAEMA-HB were retained. We supposed that DMAEMA-BB and DMAEMA-OB aggregated on the membrane surface due to the activities of intermolecular or intramolecular hydrogen bonds. Bacteria testing found the antibacterial activities of the membranes increased with the length of the substituted alkyl chain. Correspondingly, little bacteria were observed on PES-g-DMAEMA-DB and PES-g-DMAEMA-HB by SEM. The antifouling properties were investigated by filtration of a solution of Escherichia coli. Compared with the initial membrane, PES-g-DMAEMA-DB and PES-g-DMAEMA-HB showed excellent anti-biofouling performance with higher relative flux recovery (RFR) of 88.3% and 92.7%, respectively. Thus, surface functionalization of the PES membrane with QACs can prevent bacteria adhesion and improve the anti-biofouling activity by the contact-active antibacterial property.

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Section: Resultssupporting

confidence: 92%

Surface Functionalization of Polyethersulfone Membrane with Quaternary Ammonium Salts for Contact-Active Antibacterial and Anti-Biofouling Properties

Lin

Zhao

et al. 2016

Materials

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“…4b), which can be explained by the agglomeration behavior of rGO. 48 Yu et al have reported a similar behavior for hyper-branched polyethylenimine graphene blended into PES membranes. 22 The cross-section morphology of the PSf-rGO/PTh membrane is different with sponge-like micro-pores in the top layer of the membrane (Fig.…”

Section: Characterization Of the Prepared Membranesmentioning

confidence: 72%

Preparation of a novel PSf membrane containing rGO/PTh and its physical properties and membrane performance

et al. 2015

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“…Membrane fouling is mainly caused by the deposition of particles inside the membrane pore and/or the formation of a cake/gel layer on the membrane surface, which leads to an increase in filtration resistance, which, in turn, results in attenuation of permeation flux and ultimately reduces the life of the membrane [ 17 , 18 ]. The formation of fouling depends on various parameters, such as operating parameters [ 19 , 20 ], membrane material [ 21 , 22 ], and feed characteristics [ 23 , 24 ]. Therefore, it is necessary to take into account the abovementioned parameters to investigate the fouling behavior.…”

Section: Introductionmentioning

confidence: 99%

Tanning Wastewater Treatment by Ultrafiltration: Process Efficiency and Fouling Behavior

Huang

et al. 2021

Membranes

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Ultrafiltration is a promising, environment-friendly alternative to the current physicochemical-based tannery wastewater treatment. In this work, ultrafiltration was employed to treat the tanning wastewater as an upstream process of the Zero Liquid Discharge (ZLD) system in the leather industry. The filtration efficiency and fouling behaviors were analyzed to assess the impact of membrane material and operating conditions (shear rate on the membrane surface and transmembrane pressure). The models of resistance-in-series, fouling propensity, and pore blocking were used to provide a comprehensive analysis of such a process. The results show that the process efficiency is strongly dependent on the operating conditions, while the membranes of either PES or PVDF showed similar filtration performance and fouling behavior. Reversible resistance was the main obstacle for such process. Cake formation was the main pore blocking mechanism during such process, which was independent on the operating conditions and membrane materials. The increase in shear rate significantly increased the steady-state permeation flux, thus, the filtration efficiency was improved, which resulted from both the reduction in reversible resistance and the slow-down of fouling layer accumulate rate. This is the first time that the fouling behaviors of tanning wastewater ultrafiltration were comprehensively evaluated, thus providing crucial guidance for further scientific investigation and industrial application.

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Fouling mechanisms of Pseudomonas putida on PES microfiltration membranes

Cited by 21 publications

References 32 publications

Surface Functionalization of Polyethersulfone Membrane with Quaternary Ammonium Salts for Contact-Active Antibacterial and Anti-Biofouling Properties

Surface Functionalization of Polyethersulfone Membrane with Quaternary Ammonium Salts for Contact-Active Antibacterial and Anti-Biofouling Properties

Preparation of a novel PSf membrane containing rGO/PTh and its physical properties and membrane performance

Tanning Wastewater Treatment by Ultrafiltration: Process Efficiency and Fouling Behavior

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