Application of the Electrospun Nanofibers in Wastewater Treatment (original) (raw)

Jaroslav Lev , Marek HOLBA , Libor KALHOTKA , Monika SZOSTKOVÁ , Dušan KIMMER d a ASIO spol. s r.o.,Tuřanka 1, 627 00 Brno, Czech Republic, EU, lev@asio.cz, b Institute of Botany, Academy of Science of the Czech Republic, v.v.i., Lidická 25/27, 657 20 Brno, Czech Republic EU, holba@asio.cz b c Faculty of Agronomy of Mendelu in Brno, Zemědělská 1, 613 00 Brno, Czech Republic, EU, libor.kalhotka@mendelu.cz, szostkov@mendelu.cz

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Water Treatment Perfomance: Application of Electrospun Nanofibers

Jurnal Teknologi, 2015

The aim of this study was to evaluate the use of nanofiber microfiltration membranes, spun by an innovative electrospinning technique, in water filtration applications. This study bridges between developments in electrospinning techniques for the production of flat sheet membranes and the application of these membranes in water filtration. The functionalized or non-functionalized for the removal of pathogens was investigated, in term of culture mechanism of bacteria spot in the waste water. Physical properties such as clean water permeability (CWP) and strength were also examined. The test showed that the electrospun membranes can be used for water filtration applications.

Review of the Recent Advances in Electrospun Nanofibers Applications in Water Purification

Polymers

Recently, nanofibers have come to be considered one of the sustainable routes with enormous applicability in different fields, such as wastewater treatment. Electrospun nanofibers can be fabricated from various materials, such as synthetic and natural polymers, and contribute to the synthesis of novel nanomaterials and nanocomposites. Therefore, they have promising properties, such as an interconnected porous structure, light weight, high porosity, and large surface area, and are easily modified with other polymeric materials or nanomaterials to enhance their suitability for specific applications. As such, this review surveys recent progress made in the use of electrospun nanofibers to purify polluted water, wherein the distinctive characteristics of this type of nanofiber are essential when using them to remove organic and inorganic pollutants from wastewater, as well as for oil/water (O/W) separation.

Electrospun nanofibers: role of nanofibers in water remediation and effect of experimental variables on their nano topography and application processes

Environmental Science: Water Research & Technology, 2021

Water is the elixir of life and the most elementary need for the survival of human beings on planet Earth. With rapid industrialization, globalization and human exploitation, natural water resources are diminishing at a startling rate wherein availability of potable water has drastically decreased in recent times and hence membrane technology is a highly pursued area for water purification. The simple and cost-effective electrospinning technique has evolved to be a state-of-the-art method for developing nanofibers of tailored thickness and diameters by combining a broad range of starting materials. This comprehensive review emphasizes on the demonstration of electrospun nanofibers based on their fundamental principles and property–parameter interrelationships as useful filtration membranes. A brief discussion has been provided aiming towards the history of electrospinning, typical apparatus set-up and experimental variables, and latest solutions provided by the scientific community for large scale manufacturing of nanofibers. Further, a detailed overview of the design, fabrication, controlled morphologies, surface functionalization and physicochemical properties of the electrospun nanofibers followed by their useful contributions in the form of filtration membranes and sorbents for water remediation processes such as microfiltration, desalination, heavy metal ion removal, dye removal and oil–water separation has been discussed in detail.

Stand-Alone Water Treatment: Performance of Electrospun Nanofibers

Jurnal Teknologi, 2016

The aim of this study was to evaluate the use of nanofiber microfiltration membranes, spun by an innovative electrospinning technique, in water filtration applications. This study bridges between developments in electrospinning techniques for the production of flat sheet membranes and the application of these membranes in water filtration. The functionalized or non-functionalized for the removal of pathogens was investigated, in term of chemical oxygen demand, total suspend solid and ammonium in the waste water. Physical properties such as clean water permeability (CWP) and strength were also examined. The results showed a very good removal of TSS (range 94.83-97.34%), COD (89.32-95.27%) and NH3­-N (64.48-72.87%). These test showed that the electrospun membranes can be used for water filtration applications.

Water Treatment using Electrospun PVC/PVP Nanofibers as Filter Medium

International Journal of Material Science and Research, 2018

One of the prevailing problems afflicting everybody globally is the scarcity of clean and portable water supply. Water crisis constitutes a major issue to present status of world's water resources. Water pollution is now becoming a critical issue globally. Water filtration/purification with the latest technology is the urgent need in today's economy. Electrospun nanofibers with high filtration efficiency, small pore size, high permeability and low cost are materials of choice for many filtration applications. These outstanding properties are most suitable for filtration media. In this study, Polyvinyl chloride (PVC) was dissolved in N, N-Dimethylacetamide (DMAC) and the small weight percentages of Polyvinylpyrrolidone (PVP) was added in order to make the nanoporous membrane surface hydrophilic for escalating the filtration performance rate and stainability. Two different water samples (dam water and city wastewater) were used in this study. For dam water sample, the parameter such as, PH, turbidity, TDS, conductivity, Ca++, Mg++, hardness, sulfates, nitrates, fluoride, chloride, alkalinity and silica were measured and found out to be 7.5, 24.

Initial testing of electrospun nanofibre filters in water filtration applications

Water SA, 2010

The aim of this study was to evaluate the use of nanofibre microfiltration membranes, spun by an innovative electrospinning technique, in water filtration applications. As such, this study bridges the gap between developments in electrospinning techniques for the production of flat-sheet membranes and the application of these membranes in water filtration. Three different applications were examined. Firstly, the use of the membrane (functionalised or non-functionalised) for the removal of pathogens was investigated. Secondly, the electrospun flat-sheet membranes were applied for wastewater treatment in a laboratory-scale submerged membrane bioreactor (MBR). In addition to these applications, physical properties such as clean water permeability (CWP) and strength were also examined. The tests showed that the electrospun membranes can be used for water filtration applications, but that further improvements are necessary before these membranes can be practically employed. In particular, the level of functionality and the properties of irreversible fouling require further research.

Mechanically enhanced electrospun nanofibers for wastewater treatment

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.

Review Advancement in Electrospun Nanofibrous Membranes Modification and Their Application in Water Treatment

2015

Water, among the most valuable natural resources available on earth, is under serious threat as a result of undesirable human activities: for example, marine dumping, atmospheric deposition, domestic, industrial and agricultural practices. Optimizing current methodologies and developing new and effective techniques to remove contaminants from water is the current focus of interest, in order to renew the available water resources. Materials like nanoparticles, polymers, and simple organic compounds, inorganic clay materials in the form of thin film, membrane or powder have been employed for water treatment. Among these materials, membrane technology plays a vital role in removal of contaminants due to its easy handling and high efficiency. Though many materials are under investigation, nanofibers driven membrane are more valuable and reliable. Synthetic methodologies applied over the modification of membrane and its applications in water treatment have been reviewed in this article.

Advancement in Electrospun Nanofibrous Membranes Modification and Their Application in Water Treatment

Membranes, 2013

Water, among the most valuable natural resources available on earth, is under serious threat as a result of undesirable human activities: for example, marine dumping, atmospheric deposition, domestic, industrial and agricultural practices. Optimizing current methodologies and developing new and effective techniques to remove contaminants from water is the current focus of interest, in order to renew the available water resources. Materials like nanoparticles, polymers, and simple organic compounds, inorganic clay materials in the form of thin film, membrane or powder have been employed for water treatment. Among these materials, membrane technology plays a vital role in removal of contaminants due to its easy handling and high efficiency. Though many materials are under investigation, nanofibers driven membrane are more valuable and reliable. Synthetic methodologies applied over the modification of membrane and its applications in water treatment have been reviewed in this article.

Nanotechnology for water purification: electrospun nanofibrous membrane in water and wastewater treatment

Journal of Water Reuse and Desalination

The need for beneficial innovations in filtration expertise has lead to little consideration of cutting-edge materials, such as nanofiber membranes for water distillation. The presence of organic matter and traces of organics accumulation in wastewater poses a major problem and current technologies such as coagulation/flocculation and chlorine technology are unable to yield satisfying results. The extra volume of sludge generated by these technologies needs further processing and disposal. Nanotechnology has outstanding potential for filtration applications due to its capability to create precise structural controlled materials for such requirements. Electrospun nanofibrous membranes (ENMs) are cutting edge membrane technology that offer substantial high flux and high rejection rates compared to conventional membranes. ENMs present a revolution in water and sewage purification by offering a lightweight, cost-effective, and lower energy consumption process compared with conventional ...