Effect of Nanofibrous Membrane Structures on the Treatment of Wastewater Microfiltration

Yalçinkaya, Fatma; Yalcinkaya, Baturalp; Hrůza, Jakub; Hrabák, Pavel

doi:10.1166/sam.2017.3027

Cited by 26 publications

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“…where A is the effective membrane area (m 2 ), V is the total volume of the permeate (F), p is the transmembrane pressure (bar), and t is the filtration time [43].…”

Section: Filtration and Self-cleaning Experimentsmentioning

confidence: 99%

“…It is well know that hydrophilic membranes decrease the fouling due to the high affinity of the membrane to water molecules [44]. The pristine PVDF/PAN membrane without any surface treatment can be considered as being "hydrophobic" by definition [43]. The permeate flux (F) and the permeability (k) of the membrane were calculated (Equations (1) and (2)):…”

Section: Membrane Characterizationmentioning

confidence: 99%

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Preparation of Fouling-Resistant Nanofibrous Composite Membranes for Separation of Oily Wastewater

2017

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A facile and low-cost method has been developed for separation of oily wastewater. Polyvinylidene fluoride/polyacrylonitrile (PVDF/PAN) nanofibers laminated on a supporting layer were tested. In order to create highly permeable and fouling-resistant membranes, surface modifications of both fibers were conducted. The results of oily wastewater separation showed that, after low vacuum microwave plasma treatment with Argon (Ar) and chemical modification with sodium hydroxide (NaOH), the membranes had excellent hydrophilicity, due to the formation of active carboxylic groups. However, the membrane performance failed during the cleaning procedures. Titanium dioxide (TiO 2 ) was grafted onto the surface of membranes to give them highly permeable and fouling-resistance properties. The results of the self-cleaning experiment indicated that grafting of TiO 2 on the surface of the membranes after their pre-treatment with Ar plasma and NaOH increased the permeability and the anti-fouling properties. A new surface modification method using a combination of plasma and chemical treatment was introduced.

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“…where A is the effective membrane area (m 2 ), V is the total volume of the permeate (F), p is the transmembrane pressure (bar), and t is the filtration time [43].…”

Section: Filtration and Self-cleaning Experimentsmentioning

confidence: 99%

Section: Membrane Characterizationmentioning

confidence: 99%

Preparation of Fouling-Resistant Nanofibrous Composite Membranes for Separation of Oily Wastewater

2017

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“…A custom-made cross-flow laboratory module equipped with pressure control and a constant water flow velocity through the cell (70 L/min) was used to filtrate the wastewater using the nanofibrous membranes [8]. The membranes were tested for 15 hours, and the flux was occasionally measured.…”

Section: Liquid Filtration Testmentioning

confidence: 99%

“…where A is the effective membrane area (m 2 ), V is the total volume of permeate, P is transmembrane pressure (bar), and t is the filtration time (h) [8].…”

Section: Liquid Filtration Testmentioning

confidence: 99%

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Mechanically enhanced electrospun nanofibers for wastewater treatment

Yalçinkaya

2017

E3S Web Conf.

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Abstract.A novel high-performance polyamide 6, polyacrylonitrile and polyvinylidene fluoride nanofibers were fabricated using industrial production Nanospider equipment for liquid filtration as microfilters. The application of nanofibers has been hindered by their poor mechanical strength. This work developed a feasible approach to preparing mechanically strong nanofiber webs. The mechanical strength of the nanofibers was enhanced using special lamination technique on a supporting layer. Experimental results show that the mechanical strength of the nanofibers enhanced more than 5 times while high porosity and liquid permeability retain. The separation results indicate that nanofibers have a potential to be used in liquid filters.

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Effect of argon plasma treatment on hydrophilic stability of nanofiber webs

Yalçinkaya

2018

J of Applied Polymer Sci

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This paper provides a comprehensive analysis of microwave‐induced low‐vacuum argon plasma treatment effects on the hydrophilic stability of various polymeric nanofiber webs. After plasma modification, samples are kept dry at room temperature in a dark place for the experiments, and the wettability of the nanofibers is improved by plasma treatment. The stability of the plasma‐treated hydrophilic nanofiber webs is observed for 55 days using water contact angle measurements. Different polymeric nanofiber webs show different stability. Based on the contact angle measurements, the surface starts to lose hydrophilicity during the first week after plasma treatment. The structural changes are examined by pore size measurements, scanning electron microscopy, and Fourier transform infrared spectroscopy. Two of the selected nanofiber webs are used as microfilters for separation of oily wastewater with a cross‐flow separation unit to measure the effect of the plasma treatment under wastewater. The permeability and selectivity of the plasma‐treated and untreated samples are compared. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46751.

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Effect of Nanofibrous Membrane Structures on the Treatment of Wastewater Microfiltration

Cited by 26 publications

References 0 publications

Preparation of Fouling-Resistant Nanofibrous Composite Membranes for Separation of Oily Wastewater

Preparation of Fouling-Resistant Nanofibrous Composite Membranes for Separation of Oily Wastewater

Mechanically enhanced electrospun nanofibers for wastewater treatment

Effect of argon plasma treatment on hydrophilic stability of nanofiber webs

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