Nanofiber Filter Media For Air Filtration
DOWNLOAD
Download Nanofiber Filter Media For Air Filtration PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Nanofiber Filter Media For Air Filtration book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Nanofiber Filter Media For Air Filtration
DOWNLOAD
Author : Bharath Kumar Raghavan
language : en
Publisher:
Release Date : 2010
Nanofiber Filter Media For Air Filtration written by Bharath Kumar Raghavan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Air filters categories.
Nanofibers have higher capture efficiencies in comparison to microfibers in the submicron particle size range of 100-500 nm because of small fiber diameter and increased surface area of the fibers. Pressure drop across the filter increases tremendously with decrease in fiber diameter in the continuum flow regime. Nanofibers with fiber diameter less than 300 nm are in the slip flow regime as a consequence of which steep increase in pressure drop is considerably reduced due to slip effect. The outlet or inlet gases have broad range of particle size distribution varying from few micrometers to nanometers. The economic benefits include capture of a wide range of particle sizes in the gas streams using compact filters composed of nanofibers and microfibers. Electrospinning technique was used to successfully fabricate polymeric and ceramic nanofibers. The nanofibers were long, continuous, and flexible with diameters in the range of 200-300 nm. Nanofibers were added to the filter medium either by mixing microfibers and nanofibers or by directly electrospinning nanofibers as thin layer on the surface of the microfiber filter medium. Experimental results showed that either by mixing Nylon 6 nanofibers with B glass fibers or by electrospinning Nylon 6 nanofibers as a thin layer on the surface of the microfiber medium in the surface area ratio of 1 which is 0.06 g of nanofibers for 2 g of microfibers performed better than microfiber filter media in air filtration tests. This improved performance is consistent with numerical modeling The particle loading on a microfibrous filter were studied for air filtration tests . The experimental and modeling results showed that both pressure drop and capture efficiency increased with loading time. Nanofiber filter media has potential applications in many filtration applications and one of them being hot gas filtration. Ceramic nanofibers made of alumina and titania nanofibers can withstand in the range of 1000°C. Ceramic nanofibers filter media were fabricated by mixing alumina microfibers (SAFFIL) and alumina nanofibers. The appropriate binders were tested for ceramic filter media. The ceramic filter media were tested for aerosol filtration.
Nanofiber Filter Media For Air And Hot Gas Filtration Applications
DOWNLOAD
Author : Bharath Raghavan
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2011-06
Nanofiber Filter Media For Air And Hot Gas Filtration Applications written by Bharath Raghavan and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-06 with categories.
Nonwoven fibrous media with nanofibers have significant filtration applications in automotive, chemical, transportation, power generation and pharmaceutical/biological industries. Nanofibers have higher capture efficiencies in comparison to microfibers in the submicron particle size range of 100 - 500 nm because of smaller fiber diameter and increased surface area of the fibers. Nanofibers are in the slip flow regime as a consequence of which steep increase in pressure drop is considerably reduced due to slip effect. The economic benefits of using nanofiber filter media are improved filter performance and compact filters. Electrospinning process was used to fabricate polymer and ceramic nanofibers. The electrospun polymer nanofibers were added to the nonwoven fibrous media to improve filter performance for air filtration. This improved filter performance was in consistent with numerical modeling. This book describes the experimental and modeling results of particle loading on fibrous media and application of ceramic nanofibers for hot gas filtration applications.
Handbook Of Nonwoven Filter Media
DOWNLOAD
Author : Irwin M. Hutten
language : en
Publisher: Elsevier
Release Date : 2007-03-23
Handbook Of Nonwoven Filter Media written by Irwin M. Hutten and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-03-23 with Technology & Engineering categories.
The increasing importance of nonwoven filter media is due in part to their versatility: they are used in the pre-filtration of liquids, protection of membrane filters, gaseous filtration, the automotive industry, air purification, wet filtration and many household uses. Despite this, no comprehensive account of these media has existed until now. Irwin (Marshall) Hutten is well-known throughout the nonwoven industry and brings enormous experience and knowledge to this Handbook. All aspects of the properties, formation, materials, types of filters, applications, test-methods and standards are to be found within this volume. Provides practical advice on applications of nonwoven filter media Discusses in detail the raw materials and manufacturing process Offers definitions and classifications for nonwoven filter media
Nanofiber Filter Technologies For Filtration Of Submicron Aerosols And Nanoaerosols
DOWNLOAD
Author : Wallace Woon-Fong Leung
language : en
Publisher: Elsevier
Release Date : 2021-10-30
Nanofiber Filter Technologies For Filtration Of Submicron Aerosols And Nanoaerosols written by Wallace Woon-Fong Leung and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-30 with Technology & Engineering categories.
Nanofiber Filter Technologies for Filtration of Submicron Aerosols and Nanoaerosols covers the nanoaerosols (less than 100 nanometers) to larger submicron aerosols due mostly to pollution, which are present in high number concentration in our surroundings. People are breathing these nanoaerosols daily without being aware of it. Airborne viruses from flu to coronaviruses are also nanoaerosols. During the COVID-19 pandemic, it took a long time for health authorities and the General Public to recognize the airborne transmission mode of the virus. This leads to inadequate protection and ineffective virus control strategies resulting in high infection and death rates. The book cites evidence and observations pointing to the airborne transmission mode of the coronavirus. It also discusses different filtration technologies using nanofibers to capture these aerosols for short-term filtration, where aerosols are trapped in the filter (depth filtration), and long-term filtration, where aerosols are trapped in the growing filter cake (cake filtration). This book provides a good understanding on how nanofibers, which is of size 1/1000 times that of a normal human hair, can effectively filter these tiny aerosols. NFT, organized in four sections – fundamentals, deep understanding, technologies, and application, covering comprehensively on the subject, is a valuable resource for undergraduates and graduates, engineers, researchers and practitioners in related industries. Describes technologies with insight and use basic engineering principles to build-up technologies Includes extensive clear and understandable figures and tables to enhance key concepts Uses examples throughout to explain engineering principles and interdisciplinary concepts The only book in the market focusing on nanofiber filter technologies for filtering submicron aerosols and nanoaerosols
Filtering Media By Electrospinning
DOWNLOAD
Author : Maria Letizia Focarete
language : en
Publisher: Springer
Release Date : 2018-05-21
Filtering Media By Electrospinning written by Maria Letizia Focarete and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-21 with Science categories.
This book covers the state-of-the-art on electrospun materials for the use of filters for water remediation, ion-exchange membranes and affinity membranes for the capture of selected chemical and biochemical species, as well as filtering applications covering air treatment, defense and protective applications, and oil-water separation. The book also provides an overview of the landscape of marketed electrospun filters and of technical approaches for the large scale production of nanofibrous non-woven filter media. This is an ideal book for biomaterials and polymer researchers interested in the applications of filtering media by electrospinning. This book also: Covers the latest research on ion-exchange membranes and affinity membranes for capture of cells and biological substances Broadens reader understanding of antimicrobial electrospun filters and sieving filters for liquid microfiltration Reviews exhaustively the key recent research into electrospun filters for oil-water separation, heavy metals removal, and defense and protective applications
Electrospun Nanofibers
DOWNLOAD
Author : Mehdi Afshari
language : en
Publisher: Woodhead Publishing
Release Date : 2016-09-13
Electrospun Nanofibers written by Mehdi Afshari and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-13 with Technology & Engineering categories.
Electrospun Nanofibers covers advances in the electrospinning process including characterization, testing and modeling of electrospun nanofibers, and electrospinning for particular fiber types and applications. Electrospun Nanofibers offers systematic and comprehensive coverage for academic researchers, industry professionals, and postgraduate students working in the field of fiber science. Electrospinning is the most commercially successful process for the production of nanofibers and rising demand is driving research and development in this field. Rapid progress is being made both in terms of the electrospinning process and in the production of nanofibers with superior chemical and physical properties. Electrospinning is becoming more efficient and more specialized in order to produce particular fiber types such as bicomponent and composite fibers, patterned and 3D nanofibers, carbon nanofibers and nanotubes, and nanofibers derived from chitosan. Provides systematic and comprehensive coverage of the manufacture, properties, and applications of nanofibers Covers recent developments in nanofibers materials including electrospinning of bicomponent, chitosan, carbon, and conductive fibers Brings together expertise from academia and industry to provide comprehensive, up-to-date information on nanofiber research and development Offers systematic and comprehensive coverage for academic researchers, industry professionals, and postgraduate students working in the field of fiber science
Nanofiber Air Filter Materials For Efficient Particulate Matter Removal
DOWNLOAD
Author : Agasthiyaraj L
language : en
Publisher: Mohammed Abdul Sattar
Release Date : 2024-02-13
Nanofiber Air Filter Materials For Efficient Particulate Matter Removal written by Agasthiyaraj L and has been published by Mohammed Abdul Sattar this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-02-13 with Nature categories.
Human health is harmed by both brief and prolonged period exposure to PM2.5 pollution. Particulate Matter (PM) is commonly divided into two groups, PM2.5 is particles with an aerodynamic diameter lower than 2.5 μm, and if the particles' aerodynamic diameter is between 2.5 to 10 μm then it is PM10. PM2.5 particles are generated by different man-made and natural sources such as vehicular emissions, industrial emissions, power generation emissions, cooking, house cleaning, forest fire, volcano eruption etc. Especially, PM2.5 particles are critically dangerous particles which is capable to interpenetrate into human lungs and bronchi; which causes respiratory diseases like cardiovascular disease, stroke, chronic bronchitis, asthma etc., to human beings. Thus one-third of the effects of PM2.5 pollution is associated with lung cancer, stroke, and chronic vascular disease. Majority of the particulate pollutants consist of organic compounds, such as carbon-derived compounds and also nitrogen and sulfur-based inorganic compounds. Some other sort of primary pollutant is bio-aerosols, which include bacteria, viruses, and fungi. Because they are easily spread by contaminated air, this significantly enhances the risk to human health. These biological pollutants will induce toxigenic, allergic, infectious, and other disorders in both chronic and acute forms. To protect humans from PM2.5 pollution filtration of the air is the best preservation. Resultantly, interest in high-proficiency air filtration technologies which could collect dangerous particles, toxic gases and biological contaminants all at the same time is growing. Also, these high-efficiency air filter media with different multi functionalities that can work in various temperature and humidity conditions for real-time applications is gathering a lot of attention in the past few years.
Catalytic Nanofiber Media For Air And Hot Gas Filtration
DOWNLOAD
Author : Sneha Swaminathan
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2013
Catalytic Nanofiber Media For Air And Hot Gas Filtration written by Sneha Swaminathan and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
For environmental protection, the suppression of automotive exhausts such as nitrogen oxides and carbon monoxide is very important. These gases are potential health hazards and green house gases. Hence this concern triggered the need for stringent environmental regulations which resulted in the introduction of catalytic devices in automobiles. In this book, a novel approach has been developed wherein the noble metal nanocatalysts have been incorporated on ceramic nanofibers by the electrospinning process. The catalysts on ceramic nanofibers increase the overall exposed catalyst area and simultaneously immobilize the catalyst to minimize catalyst loss. A small amount of the catalyst incorporated into ceramic nanofibers was mixed with microfibers to fabricate a filter disk by vacuum molding. This filter disk termed as 'catalytic filter'is a combination of catalytic elements and filter. The catalyzed ceramic nanofiber augmented microfiber filter media can be used for two applications: reduction of NOx and oxidation of CO and for enhanced particulate removal.
Nanofiber Incorporated Glass Fiber Filter Media
DOWNLOAD
Author : Priyavardhana Srinivasan
language : en
Publisher:
Release Date : 2005
Nanofiber Incorporated Glass Fiber Filter Media written by Priyavardhana Srinivasan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Filters and filtration categories.
"Nanofibers, owing to their ultra small diameters, have high surface areas that are advantageous in fibrous filtration. By augmenting micro glass fiber media with nanofibers, a wide range of micron and sub-micron (0.3 to 0.8 micron) particles can be effectively captured. The primary objective of this research is to model the steady state performance of coalescing filter media made of glass fibers with or without polymer nanofibers and to validate with experimental data. Coalescence filtration involves the capture of small liquid droplets from an air stream. The filter performance can be characterized by the Quality Factor (QF) which accounts for pressure drop and capture efficiency of the media. A model was developed to predict the performance of filter media augmented with varying amounts of nanofibers. The model calculates single fiber capture efficiencies, filter coefficient, pressure drop, outlet particle concentration, and the quality factor (QF) of the fiber media. The model accounts for aerodynamic slip of the gas flow around the nanofibers. The model predicted that as more nanofibers are added to the filter media, the QF increases, reaches a maximum and decreases. Experiments were performed with B-glass fibers and Megasol S50 binder media. Increasing amounts of nanofiber were added and the media were tested in a coalescence filtration set up. The experimental results are in accordance with the model predictions that nanofiber incorporated filter media performs better as compared to media without nanofibers."--Page iii.
Fibrous Filter Media
DOWNLOAD
Author : Philip Brown
language : en
Publisher: Woodhead Publishing
Release Date : 2017-06-16
Fibrous Filter Media written by Philip Brown and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-06-16 with Technology & Engineering categories.
Fibrous Filter Media comprehensively covers the types, manufacture, applications, performance, and modeling of fibrous filter media. Part I introduces the principles of gas and liquid filtration, while Part II presents an overview of the types of fibrous filters, including details of fiber types, fabric construction, and applications. Part III covers a variety of filtration applications in which fibrous assemblies are used, with examples ranging from filtration for improving air quality, to medical filters, to industrial waste-water filtration. Finally, Part III covers the properties and performance of fibrous filters, including chapters on filter performance and simulation. With its expert editors and international team of contributors, this important book provides information on fibrous filters relevant to fiber and textile scientists, and is also ideal for academics and industry professionals working in the field of filtration. Dr. Philip Brown is Sweetenburg Professor of polymer and textile engineering at Clemson University, USA. Dr. Christopher Cox is Professor of mathematical sciences at Clemson University, USA. Systematic and comprehensive coverage of the trends and new technologies being developed in the field of fibrous filter media Focused on the needs of the textiles and filtration industries, with a clear emphasis on applied technology Contains contributions from an international team of authors edited by an expert in the field