Hollow-fiber membranes coated with polymerizable bicontinuous microemulsions

Li, T.D.; Gan, L. M.; Chew, C. H.; Teo, W. K.; Gan, L. H.

doi:10.1016/s0376-7388(97)00102-6

Cited by 15 publications

(5 citation statements)

References 30 publications

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“…Some researchers have prepared PBM membranes by identifying the pore size and optimizing the polymerization conditions (i.e. temperature and microemulsion conditions) but they have not been applied in surface modifications [20][21][22][23]. On the other hand, Shao et al [24] and Cheng et al [25] prepared some surface modified membranes with antifouling properties following different preparation techniques and found improved performances in lab tests, but they have not been applied yet for MBR applications.…”

Section: Introductionmentioning

confidence: 99%

Novel low-fouling membrane bioreactor (MBR) for industrial wastewater treatment

Deowan

Galiano

Hoinkis

et al. 2016

Journal of Membrane Science

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a b s t r a c tA novel antifouling coating of ultrafiltration (UF) commercial membranes, based on a polymerisable bicontinuous microemulsion (PBM) technique, was developed and tested for the first time in a membrane bioreactor (MBR) using an artificial model textile dye wastewater and compared with a commercial uncoated UF membrane. The results showed that the commercial MBR module faced severe fouling problems whereas the novel coated PBM MBR module reduced the fouling significantly. The analysis of fouling rate using a resistance model confirms that PBM coated membrane has a higher antifouling effect. The antimicrobial properties of the PBM membrane contributed by polymerisable cationic surfactant acryloyloxyundecyltriethylammonium bromide (AUTEAB) guaranteed an anti-biofouling effect preventing the growth of microorganisms on the membrane surface. In addition, the PBM MBR module showed 10 71% higher blue dye removal efficiency and a similar rate of COD removal efficiency of about 957 1% compared to commercial module. However, water permeability was slightly lower due to extra resistance of the PBM coating. Root mean squared (RMS) roughness measurement and analysis of AFM images confirmed that the stable novel membrane coating still existed and showed antimicrobial effect even after 105 days of operation. The results obtained demonstrated the potential of the low fouling PBM membrane.

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Section: Introductionmentioning

confidence: 99%

Novel low-fouling membrane bioreactor (MBR) for industrial wastewater treatment

Deowan

Galiano

Hoinkis

et al. 2016

Journal of Membrane Science

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“…In fact, the polymerization of the monomers present in the oil channels leads to the formation of a solid polymer matrix, which can be used as coating for surface modification of known and, possibly, even of commercial membranes, with the aim of improving their performances without the need for developing new performing materials. PBMs have been widely investigated and employed, for instance, as coating material for hollow fiber membranes [6]. On the other hand, Gan et al studied the polymerization of methyl methacrylate (MMA) using different types of polymerizable and non-polymerizable surfactants [2,3,7,8].…”

Section: Introductionmentioning

confidence: 99%

A step forward to a more efficient wastewater treatment by membrane surface modification via polymerizable bicontinuous microemulsion

Galiano

Figoli

Deowan

et al. 2015

Journal of Membrane Science

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a b s t r a c tAn innovative hydrophilic and anti-fouling coating material for application in membrane technology for wastewater treatment has been developed by polymerization of a polymerizable bicontinuous microemulsion (PBM) and used for surface modification of a commercial flat polyethersulfone (PES) membrane. The novel nanostructured coating has been produced using acryloyloxyundecyltriethylammonium bromide (AUTEAB) as a co-polymerizable surfactant, obtained through a synthetic method characterized by a lower cost and a higher reproducibility compared to other known polymerizable surfactants. The novel composite membranes have been characterized and compared with the uncoated PES membranes. Coated membranes resulted in a smoother surface and a higher hydrophilicity with respect to the uncoated ones, and showed a particular nano-size channel-like morphology making them highly resistant to the fouling phenomenon. The covalent anchorage of the surfactant on the membrane surface ensured the embedment of the molecule in the polymeric matrix avoiding its leaching and also leading the coated membranes to have significant antimicrobial activity, which is very important for reducing the biofouling phenomenon.All these aspects make the tailored coating material an ideal and efficient coating for modifications of commercial membrane surfaces, to be used in membrane processes in wastewater treatment.

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“…PBMs are of increasing interest due to their possible application in catalysis, use as drug delivery systems as well as coating materials in separation processes [22]. This latter includes use as a coating for surface modification previously fabricated membranes to improve their performance through surface modification [23][24][25]. Recently Galiano et al [1] studied the modification of commercial membranes using PBM layers and found them to produce smooth and relatively hydrophilic surfaces which showed lower biofouling fouling than the unmodified membranes.…”

Section: Introductionmentioning

confidence: 99%