electrospun nanofibers for water treatment01 Sep electrospun nanofibers for water treatment
In this study, nanofiber scaffolds were developed from different mixing ratios of licorice (Glycyrrhiza glabra) extract and polyvinyl alcohol (PVA) by electrospinning.It was determined that the developed PVA-licorice nanofiber (PLN) scaffold showed outstanding . Electrospinning has been known as an efficient method for fabrication of polymer nanofibers. Future research needs to address the gap between laboratory investigations and commercial applications of adsorbent nanofibers for water and wastewater treatment practices are also presented. Recent progresses and improvements in the water treatment are based on a new generation of filtration media known as " Electrospun Nanofibrous Membranes. In this study, nanofibers of poly (acrylic acid) (PAAc), polyacrylamide (PAAm) and poly (vinyl alcohol) (PVOH) were prepared using the electrospinning technique. Furthermore, the parameters that influence the HM removal by electrospun nanofibers and the reusability of adsorbent nanofibers were discussed. We want to hear from you. Several publications and patent documents are cited throughout the specification in order to describe the state of the art to which this invention pertains. Introduction. Therefore, electrospun nanofibrous membranes have been used in water purification applications. "The book illustrates fundamental concepts of preparation, characterization and modification of electro-spun and phase inverted polymeric membranes and presents their recent advancements for specific applications to the readers" After calcination, the PAN molecular chain was cyclized, dehydrogenated and oxidized, which made it easier to combine with Fe 3+. Titanium dioxide is a photocatalyst with applications in several technological fields. This starts from particulate filtration down to removal of selective contaminants such as arsenic and other heavy metals. Based on the Taguchi DOE (design of experiment) method, the effects of electrospinning parameters, i.e., needle tip to collector distance, polymer solution concentration, applied voltage, polymer solution feed rate and polymer type . Keywords: electrospun nanofibers, cancer treatment, drug release, nanomedicine, biocompatible polymers, hyperthermia. Water purification and water desalination via membrane technology are generally deemed as reliable supplementaries for abundant potable water. In case of electrospun nanofibers the smallest dimension (diameter) is in range of 50-500nm. In this study, an electrospun nanofibrous mats based on polylactic acid with a defined release using dox. Sorted by: Results 1 - 7 of 7. High surface area of electrospun nanofibers makes this technique suitable as more functional . Electrospun nanofiber-based membranes (ENMs), benefitting from characteristics such as a higher specific surface area, higher porosity, lower thickness, and possession of attracted broad attention, has allowed it to evolve into a promising candidate . Tools. The maximum permeate flux and rejection factor of the PVDF ENMs were 11-12 kg/m 2 h and 98.7%-99.9% under a T of 60C. ; Contact Us Have a question, idea, or some feedback? Enter the email address you signed up with and we'll email you a reset link. Credit: Myung Lab. Electrospun nanofiber-based membranes (ENMs), benefitting from characteristics such as a higher specific surface area, higher porosity, lower thickness, and possession of attracted broad attention, has allowed it to evolve into a promising candidate . In Figure 8 B, the electrospun PAN nanofiber membrane was used as the substrate for water treatment. Titanium dioxide is a photocatalyst with applications in several technological fields. Electrospun nanofibers provide a microenvironment similar to the natural extracellular matrix and conduct cells toward migration and proliferation. cr 232 Electrospun fiber morphology was analyzed before and after water treatment for the 233 removal of PEO using a Hitachi S-2700 Scanning Electron Microscope (SEM) at 15 kV 234 accelerating voltage, after putting the samples on a SEM disk and sputter-coated with an us 235 8 nm Pt/Au layer to reduce electron charging effects. 2016). Electrospun nanofibers loaded with Au NCs were obtained and the scanning electron microscope (SEM) and high-resolution transmission electron microscope (HRTEM) results indicated that Au NCs were located on the surface of the electrospun fiber. Oil separation from water becomes a challenging issue in industries, especially when large volumes of stable oil/water emulsion are discharged. 5428-5448 ISSN: 0022-2461 Subject: This study bridges between developments in electrospinning techniques for the . Jurnal Teknologi, 2015 . Electrospun nanofiber mats have huge surface area to volume ratio, high porosity, great water permeability and flexibility [17,18]. . These attributes enable electrospun nanofibers to demonstrate their functionality and is widely applied in air filtration [19,20], water treatment [21,22], desalination [23,24], and adsorption [25,26]. Uranium (U) contamination of drinking water often affects communities with limited resources, presenting unique technology challenges for U 6+ treatment. The functional fiber membrane SPAN/-FeOOHx with -FeOOH nanoparticles uniformly loaded on the membrane surface . CS was dissolved with hydroxybenzotriazole (HOBt), thiamine pyrophosphate (TPP) and ethylenediaminetetraacetic acid (EDTA) in distilled water without the use of toxic or hazardous solvents. In a study of cancer treatment, as presented in Fig. 4 wt% PVP . After being rinsed with sufficient deionized water to remove the weakly linked PMPC molecules, the surface-functionalized electrospun PLA nanofibers were obtained, and the presence of PMPC on the . Our authors and editors. Electrospinning is an emerging and unique fabrication technique, and a straightforward nanofiber production technology that can produce nanofibrous nonwovens. They concluded that the PVA could become more hydrophilic after being loaded with a small amount of Au . 2014; Feng et al. Additionally, the electrospinning technique allows a uniform pore size, which is considered to be one of the important characteristics of membranes. The nanofibers sheets are either used alone or in association with other materials to provide hybrid performance to the nanofiber membrane for providing membrane-based processes such as . The most commonly used technique for preparing nanofibers is electrospinning. Water purification and water desalination via membrane technology are generally deemed as reliable supplementaries for abundant potable water. Water Treatment Perfomance: Application of Electrospun Nanofibers. Generally, nanofibers acquire extremely high porosity, high surface area-to-volume ratio, high mechanical strength, and flexibility compared to conventional flat-sheet membranes [ 14 , 15 ]. Nanofibrous filters made of electrospun nanofibers are used in different types of filtration. (2008) first reported electrospun PVDF nanofibrous membranes for air-gap MD to produce potable water from saline water with NaCl concentrations of 1, 3.5, and 6 wt%. due to their unique properties such as environmental friendly, biocompatibility and biodegradability. Electrospinning is a major way to engineer (without self-assembly) nanostructures that vary in: Fiber Diameter Mesh Size Porosity Texture Pattern Formation 11/21/2015 2 Burger, Christian, et . The design and development of novel dressing materials are urgently required for the treatment of chronic wounds caused by diabetic ulcers in clinics. 7, compared with the warm water bath method, cancer cells were killed in a more effective way by the oscillatory magnetic field induced heat from the loaded Fe 3 O 4 particles in the polystyrene (PS) electrospun fibers . Each of these citations is incorporated . These above said polymers were electrospun into nanofibers and are used for water treatment applications (Si et al. Electrospinning is a versatile and simple technique that allows the generation of ultrathin fibers of numerous compositions. Electrospun PLLA nanofiber scaffolds and their use in combination with BMP-2 for reconstruction of bone defects. . Synthesized composite nanofibers were sintered at 500 Degree-Sign C to obtain CuO nanofibers. In this study, nanofibrous filters comprising of electrospun filter media between two nonwoven layers w. When used for drug delivery, properties of electrospun nanofibers can be tailored to control the rate of drug release by tuning fiber diameter, porosity, and drug-binding mechanism [19]. By using nanofiber membrane, extremely disinfected water can be attained from numerous wastewater source, since of small pore size, flexibility and huge surface area-to-capacity ratio. Electrospun nanofiber membranes (ENMs) can play a significant role in water treatment due to their beneficial characteristics, providing a promising future for long-lasting, safe water availability. The source PA-6 material was solubilized in a 13% w/w solution of 50/50 formic and acetic acids. . designed a colorimetric glucose biosensing GOx-HRP/CS/PVA nanofiber in a water-based medium by electrospinning. A water filter made from electrospun nanofibers. Electrospinning is a versatile technology for creating nanofiber membranes with dimensions smaller than 100 nm. The new application of electrospun nanofibrous membranes for the . Nanofibers present an opportunity to modify the release of therapeutic agents, which may be desirable in regulation of inflammation and remodeling and infec . Nanofibers have a high surface-to-volume ratio, as well as high porosity, mechanical robustness, and more. The application of electrospun nanofibers as the scaffold for TFC (thin-film com-posite) membranes in the pressure- and osmotic-membrane processes is then introduced. My Research and Language Selection Sign into My Research Create My Research Account English; Help and support. In 2008, Feng et al. Enter the email address you signed up with and we'll email you a reset link. Small distances between them (pores) and high surface energy brings properties unseen before in traditional materials. Here, we develop a suite of chemically functionalized polymer (polyacrylonitrile; PAN) nanofibers for low pressure reactive filtration applications for U 6+ removal. In this special type of technology, the selectivity and flux of membrane provide high-performance capacity to nanofibers for separation or water treatment. Furthermore, new applications for membranes were considered in environmental protection and wastewater treatment utilizing electrospun polymeric membranes . Electrospinning is a versatile manufacturing . 2013). The present short review offers an overview of the recent developments in the nanofiber membranes used in oily wastewater treatment. Chitosan (CS) aqueous salt blended with polyvinyl alcohol (PVA) nanofibre mats was prepared by electrospinning. The utilization of nanomembranes has . . XRD, FTIR and XPS techniques were used to confirm the presence of pure CuO nanostructures. 1. PLoS One 2011;6:25462 (0) by Schofer MD, Roessler PP, J Schaefer Add To MetaCart. The approach is based on producing rough and discontinuous electrospun nanofibers from a precursor based on copper acetate salt and polyvinyl alcohol (PVA) polymer. The structure of electrospun nanofibers is very promising in terms of permeability, selectivity, and low fouling. There is a dire demand for water treatment and the development of new, better, and more effective filtration and separation technologies to face the progressive scarcity of water, pollution, and tighter regulations. Due to the highly controllable structure and performance, nanofibers produced by electrospinning have been commonly used in a wide range of areas, including energy 1, environment 2, and biomedical engineering 3, 4.In most of the scenarios for biomedical application, electrospun nanofibrous membranes are implanted in vivo for treatment 5, which are in direct contact with human . MG63 Osteoblast-Like Cells Exhibit Different Behavior when Grown on Electrospun Collagen Matrix versus . An electrospun manganese acetate/poly(vinyl alcohol) nanofiber mats have been hydrothermally treated by novel strategy. Electrospun nanofibers for cancer PDT can achieve considerable selective therapeutic effect by simply focusing the light on the scaffold-localized tumor region. Membrane separation technology has become one of the most important technologies for water purification because it is highly efficient, low cost, and environmentally friendly . To create a uniform layer made of electrospun PANI nanofibers, a dispersion of 10.0 mg of PANI hollow fibers in 1.0 mL of NMP was deposited on the glass slide to cover the ITO layer, then a . Into these colloidal particles, a water soluble chemotherapeutic drug (5-FU) and a lipophilic drug as cefradine (an antibiotic active against . 3.2 Unaligned and Aligned Nanofibers The alignment/orientation of the fibers primarily depends on the type of collector used such as pin, plate, cross bar, rotating rods or wheels, drum, liquid bath, disk . Electrospinning is a versatile and simple technique that allows the generation of ultrathin fibers of numerous compositions. electrospun nanofibres 1. This article reviews glucose sensors based on electrospun nanofibers. The new application of electrospun nanofibrous membranes for the thermally-driven MD (membrane distillation) process for water treatment as well as strategies for performance . Electrospun nanofiber membranes (ENMs) have high porosity, high specific surface area and unique interconnected structure. It has huge advantages and potential in the treatment and recycling of wastewater. Electrospun nanofiber-based membranes (ENMs), benefitting from characteristics such as a higher specific surface area, higher porosity, lower thickness, and possession of attracted broad attention, has . Binding agents with either nitrogen-containing or phosphorous-based (e.g . In recent years, with the development of tissue engineering, especially in situ tissue engineering ( Joshi et al., 2015; Rezk et al., 2018 ), electrospun nanofibers have shown great potential in biomedical fields including oral disease treatment ( Dong et al., 2020; Shi, 2020; Zhao and Cui, 2020 ). The naked eye colorimetric CS/PVA . BACKGROUND OF THE INVENTION. Electrospun copper based composite nanofibers were synthesized using the copper acetate/polyvinyl alcohol/water solution as starting material. Electrospun nanofibers with porous structure fabricated by various approaches can further increase the surface area and surface active sites of the membranes, which making it a great potentials in the fields of water treatment, supercapacitors, energy storage devices and medical field , , , , . Researchers are investigating the use of electrospun membrane in the different stages of water purification and treatment. At present, nanofibers based on natural polymers have found applications in many fields such as medicine, fuel, water treatment, etc. Electrospun TiO2 nanofibers for water and wastewater treatment: a review Author: Belisa A. Marinho, Selene M. A. Guelli U. de Souza, Antnio Augusto U. de Souza, Dachamir Hotza Source: Journal of materials science 2021 v.56 no.9 pp. The electrospun NiO-STO nanofibers are then annealed at 600oC to transform them into a crystalline form for better photocatalyst efficiency. They can . In this study, an electrospun nanofibrous mats based . The nanofibers produced by the electrospun techniques have larger surface areas and high pore volume with interconnectivity favouring methods like water remediation, energy storage, and conversion . We are a community of more than 103,000 authors and editors from 3,291 institutions spanning 160 countries, including Nobel Prize winners and some of the world's most-cited researchers. Polymeric Nanofibers in Biomedicine: General Overview . In a previous method, after soaking in benzophenone, the electrospun nanofibrous membranes were immersed in an aqueous solution of methacryloyloxyethyl phosphorylcholine (MPC) monomer, which is a hydrophilic initiator 2-hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methyl . -block-poly(L-lactide). The aim of this study was to evaluate the use of nanofiber microfiltration membranes, spun by an innovative electrospinning technique, in water filtration applications. Because nanofibers have extremely small diameters the surface area increases dramatically. Introduction Nanofabrics are composed of non-woven Nano fibers. the hydrophilicity of nanofibers has improved. In case of water treatment, the NF membranes are more affordable compared to the RO membranes. Water purification and water desalination via membrane technology are generally deemed as reliable supplementaries for abundant potable water. Support Center Find answers to questions about products, access, use, setup, and administration. Thus, the use of electrospinning to produce TiO2 nanofibers is an approach that may . More specifically, this invention provides methods of synthesizing nanofiber structures and methods of use thereof. Water and wastewater treatment is a global challenge that requires innovative solutions. PA-6 Nanofibers Preparation Electrospun PA-6 nanofibers were produced using an electrospinning apparatus consisting of a DC power source (Gamma High Voltage Research, Inc. Model HV ES 30P/100) at approximately 15kV for spinning of the fibers. Nano fibers are created by a process called electrospinning. Electrospinning has been known as an efficient method for fabrication of polymer nanofibers. The adsorption capacity of MIP in spiked bottled water and groundwater samples showed that the polymer could effectively extract MCPP from bottled water and groundwater (p < 0.05) with the recovery of 70.5% and 65.1%, respectively, demonstrating the potential of imprinted polymers for cost-effective and effective water treatment. Next-generation POU treatment technologies must require minimal energy inputs, be simple enough to permit broad application among different users, and be easily adaptable for removal of a wide range of pollutants. Magnetic hyperthermia, rather than photo hyperthermia, is considered to . As a result, water . Where nanofibers can be applied? In this study, ursolic acid (UA) extracted from Chinese herbal plants was encapsulated into electrospun nanofibers made from a blend of chitosan (CS) and polyvinyl alcohol (PVA) to generate innovative CS-PVA-UA dressings for diabetic wound . This review notes that nanofiber membranes can efficiently separate the free-floating oil, dispersed oil and emulsified . Among all the techniques for generating nanofibers, electrospinning is an emerging and efficient process. Nosang Myung, a professor of chemical and environmental engineering in UC Riverside's Bourns College of Engineering, has received a $460,000 grant from the National Science Foundation to develop a nanofiber filter that improves removal of nitrogen and phosphorous from waste and contaminated water.
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