Efficient biostimulants for bacterial quorum quenching to control fouling in MBR

Yu, Huaorng; Du, Chenyu; Qu, Fangshu; He, Junguo; Rong, Hongwei

doi:10.1016/j.chemosphere.2021.131689

Cited by 19 publications

(6 citation statements)

References 40 publications

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“…The filtrate contained the EPS extracted from the biomass. 30 The pellet was resuspended again with 0.8% sodium chloride solution, and the suspension was homogenized using an ultrasonic probe (SM-900A, Shanghai, China) in an ice bath for 15 min. Then the suspension was directly filtered with a 0.45 μm syringe filter, and the filtrate was designated as the intracellular polymeric substances (IPS).…”

Section: Methodsmentioning

confidence: 99%

Characterization of activated sludge in wastewater treatment processes using front-face excitation–emission matrix (FF-EEM) fluorescence spectroscopy

Yang

et al. 2022

Environ. Sci.: Water Res. Technol.

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Section: Methodsmentioning

confidence: 99%

Characterization of activated sludge in wastewater treatment processes using front-face excitation–emission matrix (FF-EEM) fluorescence spectroscopy

Yang

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…The flat sheet membrane (PVDF and PES) was cut to 76 mm in diameter (with a surface area of 45.34 cm 2 ) to fit the UF cell (Amicon 8400, Millipore, Bedford, MA, USA) for flux measurements [ 23 ]. The hollow fiber membrane was cut to 100 mm in length, and 7 fibers were assembled into a module (with surface area of 43.96 cm 2 ) using epoxy resin [ 24 ].…”

Section: Methodsmentioning

confidence: 99%

Chemical Cleaning and Membrane Aging in MBR for Textile Wastewater Treatment

Shangguan

Xie³

et al. 2022

Membranes

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Membrane bioreactors have been widely used in textile wastewater treatment. Intensive chemical cleaning is indispensable in the MBR for textile wastewater treatment due to the severe membrane fouling implied. This work investigated the aging of three different membranes, polyvinylidene fluoride (PVDF), polyether sulfone (PES), and polytetrafluoroethylene (PTFE), in the MBRs for textile wastewater treatment. Pilot-scale MBRs were operated and the used membrane was characterized. Batch chemical soaking tests were conducted to elucidate the aging properties of the membranes. The results indicated that the PVDF membrane was most liable to the chemical cleaning, and the PES and PTFE membranes were rather stable. The surface hydrophobicity of the PVDF increased in the acid aging test, and the pore size and pure water flux decreased due to the elevated hydrophobic effect; alkaline oxide aging destructed the structure of the PVDF membrane, enlarged pore size, and increased pure water flux. Chemical cleaning only altered the interfacial properties (hydrophobicity and surface zeta potential) of the PES and PTFE membranes. The fluoro-substitution and the dehydrofluorination of the PVDF, chain scission of the PES molecules, and dehydrofluorination of the PTFE were observed in aging. A chemically stable and anti-aging membrane would be of great importance in the MBR for textile wastewater treatment due to the intensive chemical cleaning applied.

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“…QQ biological stimuli with conserved parts similar to pathogenic bacteria QSM can stimulate local QQ bacteria to produce corresponding degradation enzymes or enhance their activity [85], disrupting the communication of pathogenic bacteria, and thereby significantly inhibiting the formation of biofilms. The QSI, 3-phenyllactic acid (PLA), produced by Lactobacillus sp.…”

Section: Inhibition Of the Qs Pathwaymentioning

confidence: 99%

Elimination of Pathogen Biofilms via Postbiotics from Lactic Acid Bacteria: A Promising Method in Food and Biomedicine

Che,

Shi,

Fang

et al. 2024

Microorganisms

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Pathogenic biofilms provide a naturally favorable barrier for microbial growth and are closely related to the virulence of pathogens. Postbiotics from lactic acid bacteria (LAB) are secondary metabolites and cellular components obtained by inactivation of fermentation broth; they have a certain inhibitory effect on all stages of pathogen biofilms. Postbiotics from LAB have drawn attention because of their high stability, safety dose parameters, and long storage period, which give them a broad application prospect in the fields of food and medicine. The mechanisms of eliminating pathogen biofilms via postbiotics from LAB mainly affect the surface adhesion, self-aggregation, virulence, and QS of pathogens influencing interspecific and intraspecific communication. However, there are some factors (preparation process and lack of target) which can limit the antibiofilm impact of postbiotics. Therefore, by using a delivery carrier and optimizing process parameters, the effect of interfering factors can be eliminated. This review summarizes the concept and characteristics of postbiotics from LAB, focusing on their preparation technology and antibiofilm effect, and the applications and limitations of postbiotics in food processing and clinical treatment are also discussed.

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Efficient biostimulants for bacterial quorum quenching to control fouling in MBR

Cited by 19 publications

References 40 publications

Characterization of activated sludge in wastewater treatment processes using front-face excitation–emission matrix (FF-EEM) fluorescence spectroscopy

Characterization of activated sludge in wastewater treatment processes using front-face excitation–emission matrix (FF-EEM) fluorescence spectroscopy

Chemical Cleaning and Membrane Aging in MBR for Textile Wastewater Treatment

Elimination of Pathogen Biofilms via Postbiotics from Lactic Acid Bacteria: A Promising Method in Food and Biomedicine

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