Improvements in the Structure of Electrospun Polyurethane Nanofibrous Materials Used for Bacterial Removal from Wastewater

Lev, Jaroslav; Holba, Marek; Kalhotka, Libor; Mikula, P.; Kimmer, Dušan

doi:10.11159/ijtan.2012.003

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…Por ejemplo, los valores de eficiencia obtenidos en fibras electrohiladas de nylon-6 son del orden de 99.993%; mientras que, en filtros comerciales, esta eficiencia es de aproximadamente 99.97% (Barhate y Ramakrishna, 2007). Estos sistemas pueden emplearse para gases o líquidos; en el caso de aguas residuales obtenidas en plantas de tratamiento, las nanofibras son funcionalizadas con nanopartículas para reducir la actividad microbiana patógena (Lev, Holba, Kalhotka, Mikula y Kimmer, 2012).…”

Section: Medio Ambienteunclassified

Producción de nanofibras poliméricas mediante el proceso de electrospinning y su uso potencial

Pataquiva-Mateus

Daza

2018

Revista Mutis

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En este artículo de revisión se presentan las diferentes formas de fabricación de nanofibras de polímeros haciendo énfasis tanto en la técnica de electrospinning, la cual es un proceso sencillo, versátil y adecuado para la fabricación de materiales unidimensionales (1D), como en los parámetros que se deben considerar al utilizar este método; además, se señala la importancia de los parámetros de procesamiento (voltaje, distancia y flujo), de solución (concentración, viscosidad y tensión superficial) y ambientales (temperatura y humedad). Finalmente, se mencionan las distintas aplicaciones que involucran nanofibras en campos de acción como energía, ingeniería de tejidos, medio ambiente y alimentos.

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Section: Medio Ambienteunclassified

Producción de nanofibras poliméricas mediante el proceso de electrospinning y su uso potencial

Pataquiva-Mateus

Daza

2018

Revista Mutis

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“…The PU-NF base membrane can effectively remove pathogen from waste water upon filtration. Additionally, another work done by Lev, J. et al also showed the fabrication of 0.25 µm PU-NF based membrane, which was able to remove the bacteria of Escherichia coli effectively in laboratory test [ 52 ].…”

Section: Nanosynthesis Of Representative Polymers Used In Construcmentioning

confidence: 99%

Synthesis, Morphologies and Building Applications of Nanostructured Polymers

Shah

2017

Polymers

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Nanostructured polymers (NSPs) are polymeric materials in the size of nanoscale, normally consisting of nanoparticles, nanofibers, nanowires, nanospheres and other morphologies. Polymer nanoparticles (PNPs) can be fabricated either by physical methods (i.e., solvent evaporation, nanoprecipitation, salting out) or by direct nanosynthesis, using micro-or nanoemulsions with nanoreactor compartments to perform polymerization. Polymer nanofibers (PNFs) can be produced via various techniques and the most commonly used approach is electrospinning, whereby a charged solution of a polymer when exposed to an opposite high electric field is pulled into long thin nanofibers. NSPs in general exhibit enhanced properties such as excellent structural and mechanical properties, making them promising candidates for some particular building applications. A variety of PNFs have been developed and used for noise and air pollution filtration. Moreover, PNFs can also be fabricated with phase change materials which are usually employed for thermal energy storage in construction industry. In this review, we will summarize the morphologies and nanosynthesis methods of NSPs, in particular, PNPs and PNFs. In addition, representative NSPs mainly used in construction are introduced for building applications.

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“…Many studies have been conducted on bacterial removal employing different techniques. Lev et al [60] demonstrated an E. coli removal method in wastewater by employing electrospun polyurethane nanofibers. As shown in Table 5, PAN fibers with 10 wt% PVP and 5 wt% gentamicin showed better results, with the total coliform concentration reduced to 980.4 MPN/100ml and the E. coli concentration reduced to 1,119.9 MPN/100 ml.…”

Section: Bacterial Analysis Of Filtered Wastewater Samplesmentioning

confidence: 99%

Highly Hydrophilic Electrospun Polyacrylonitrile/ Polyvinypyrro-lidone Nanofibers Incorporated with Gentamicin as Filter Medium for Dam Water and Wastewater Treatment

Alharbi

Alarifi

Khan

et al. 2016

J. Memb. Separ. Tech.

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The need for advancement in filtration technology has spurred attention to advanced materials, such as electrospun nanofiber membranes, for providing clean water at a low cost with minimum initial investment. Polymer nanofibers can be fabricated by using different techniques, such as template synthesis, self-assembly, drawing, phase separation, and electrospinning. Due to its distinctive properties, electrospinning has become a method of choice for fabricating nanofiber membranes quickly with minimal investment. In this study, polyacrylonitrile (PAN) was dissolved in dimethylformamide (DMF), and different weight percentages of polyvinylpyrrolidone (PVP) and gentamicin sulfate powder were added to the solution to fabricate nanomembranes via the electrospinning process. Gentamicin was added to remove bacteria and viruses and prevent fouling, while PVP was added to make the surface of the membrane hydrophilic for enhancing the filtration rate and efficiency. Two water samples were chosen for the filtration processes: dam water and city wastewater. For the dam water sample, PH, turbidity, TDS, Ca ++ , Mg++, sulfates, nitrates, fluoride, chloride, alkalinity and silica were reduced to +3.64%,

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Improvements in the Structure of Electrospun Polyurethane Nanofibrous Materials Used for Bacterial Removal from Wastewater

Abstract: Abstract-

Cited by 4 publications

References 11 publications

Producción de nanofibras poliméricas mediante el proceso de electrospinning y su uso potencial

Producción de nanofibras poliméricas mediante el proceso de electrospinning y su uso potencial

Synthesis, Morphologies and Building Applications of Nanostructured Polymers

Highly Hydrophilic Electrospun Polyacrylonitrile/ Polyvinypyrro-lidone Nanofibers Incorporated with Gentamicin as Filter Medium for Dam Water and Wastewater Treatment

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