Potential of a functionalised nanofibre microfiltration membrane as an antibacterial water filter

Daels, Nele; Vrieze, Sander De; Sampers, Imca; Decostere, Bjorge; Westbroek, Philippe; Dumoulin, Ann; Dejans, Pascal; Clerck, Karen De; Hulle, Stijn Van

doi:10.1016/j.desal.2011.03.012

Cited by 88 publications

(55 citation statements)

References 34 publications

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“…Via the electrospinning process both polymeric as ceramic nanofibrous membranes can be produced [19][20][21]. Polymer nanofibrous membranes functionalized with TiO2 nanoparticles have already shown to be promising for photodegradation of dissolved organic matter, humic acids and bacteria [3,22,23]. Ceramic membranes, although less exploited so far, have many advantages over polymeric membranes for filtration applications, since they have typically superior thermal properties, and a better resistance against corrosion and chemicals [24].…”

Section: Introductionmentioning

confidence: 99%

TiO2 functionalized nanofibrous membranes for removal of organic (micro)pollutants from water

Geltmeyer

Teixido

Meire

et al. 2017

Separation and Purification Technology

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Abbreviations 1 1 PA 6: polyamide 6, MB: Methylene Blue, IL: inline, DC: dip-coating, H: hydrophilic 2 ABSTRACT Titania has already proven its added value for air and water treatment. The higher the surface-to-volume area, the better the performance of the TiO2 photocatalyst. These nanoparticles are typically applied in a slurry form. The use of titania nanoparticles in suspension has, however, multiple disadvantages such as a high turbidity and complex recovery of the photocatalyst after use. Therefore, immobilization of titania nanoparticles on a porous support such as a nanofibrous membrane, can be highly valuable for water treatment. These TiO2 functionalized nanofibrous membranes may be used not only in a membrane separation reactor, but also in a contact reactor. In this study, TiO2 nanoparticles were immobilized on both polymer (polyamide 6) and ceramic (silica) nanofibrous membranes. Polymer nanofibers are chosen as they are the state-of-the-art material, silica nanofibers on the contrary are less studied but show additional advantages due their excellent chemical and thermal stability and can thus offer a clear benefit for a wider range of applications. Two immobilization techniques were used, namely inline functionalization and dip-coating. Inline functionalization showed to be the preferred method for polyamide 6 nanofibrous membranes, dip-coating for silica nanofibrous membranes. Complete degradation of isoproturon, an actual concern in water treatment, is shown. Even the widely available commercial TiO2 nanoparticles allowed for a complete isoproturon removal as the result of a correct immobilization process on nanofibrous materials. This clearly opens up the high value of TiO2 functionalized nanofibrous membranes for organic (micro)pollutants removal.

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Section: Introductionmentioning

confidence: 99%

TiO2 functionalized nanofibrous membranes for removal of organic (micro)pollutants from water

Geltmeyer

Teixido

Meire

et al. 2017

Separation and Purification Technology

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“…The best performance was from TF-MBR, because the trickling filter and module configuration reduced membrane fouling. Furthermore, the ENMs remained effective with proper NaClO/HCl cleaning [82]. Bilad and co-workers optimized the preparation of ENMs for MBR applications by adding a nonwoven support and introducing heat treatment on the sheet surface at the feed side to prevent fouling.…”

Section: Membrane Bioreactormentioning

confidence: 97%

“…Daels and co-workers studied the use of a functionalized nanofibrous microfiltration membrane as an antibacterial water filter [82]. Polyamide nanofibrous membrane was electrospun with several biocides that are soluble in the electrospinning solvent, and biocides were incorporated partially on the nanofiber surface.…”

Section: Mf Filtermentioning

confidence: 99%

Electrospun Nanofibrous Membranes for Liquid Filtration

Wang

Hsiao

Chu

2014

Nanostructure Science and Technology

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Liquids are essential for most of the lives and activities on earth, where liquid filtration is an important tool to remove undesired suspended solids, emulsified particles, dissolved molecules, and ions from liquids by separating the permeate from the unwanted impurities through filters. Electrospun nanofibrous membranes (ENMs) have been developed as filtration media having unique advantages over traditional membranes, due to high porosity, interconnected pore structures, large surface-to-volume ratio with capability for chemical/physical functionalization, and cost-effectiveness. The new fibrous membrane format has been used in many applications, including filtration, (membrane) distillation, and pervaporation.

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“…To achieve steady state electrospinning, it is crucial to determine a suitable solvent system Van der Schueren et al 2011). By studying steady state electrospinning of polyamides, it was possible to produce large uniform membranes that were further studied for use in water filtration (Bjorge et al 2009;Daels et al 2010Daels et al , 2011. The same approach can be used to scale up the electrospinning of other polymers.…”

Section: Introductionmentioning

confidence: 99%

“…A single nozzle electrospinning setup using a flat collector has been successfully scaled up to a multi-nozzle system capable of producing large volumes of nanofiber membranes (Kim et al 2006;Varesano et al 2009;Daels et al 2011). Steady state electrospinning is the key to a successful scale up of the electrospinning process (Spivak et al 2000;De Vrieze et al 2011;De Schoenmaker et al 2012) and as a first step the steady state conditions on a single nozzle setup should be studied.…”

Section: Introductionmentioning

confidence: 99%

Steady state electrospinning of uniform polyethersulfone nanofibers using a non-heated solvent mixture

et al. 2015

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Electrospinning is the most promising method for the large-scale production of nanofiber membranes. Multi-nozzle systems have already proven to be successful in producing polyamide nanofiber membranes suitable for water filtration. In this contribution, conditions for steady state electrospinning of polyethersulphone were investigated. Steady state electrospinning of PES was only possible for a limited number of electrospinning parameter combinations. Only a polymer concentration of 25 and 26 wt% resulted in defect-free nanofiber membranes. The solvent ratio of DMF:NMP can be varied from 95:5 (v:v%) to 85:15 (v:v%) to generate uniform nanofibers with average diameters varying from 300 to 730 nm all with relatively narrow standard deviation as low as 20 %. These results, thus, allow for a well-chosen set of electrospinning parameters for scaling up electrospinning of polyethersulphone nanofiber membranes.

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Potential of a functionalised nanofibre microfiltration membrane as an antibacterial water filter

Cited by 88 publications

References 34 publications

TiO2 functionalized nanofibrous membranes for removal of organic (micro)pollutants from water

TiO2 functionalized nanofibrous membranes for removal of organic (micro)pollutants from water

Electrospun Nanofibrous Membranes for Liquid Filtration

Steady state electrospinning of uniform polyethersulfone nanofibers using a non-heated solvent mixture

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