Filtration of aerosols is omnipresent in our daily lives, in areas as diverse as health, the protection of people and the environment, and air treatment inside buildings. Ho…Read more
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Filtration of aerosols is omnipresent in our daily lives, in areas as diverse as health, the protection of people and the environment, and air treatment inside buildings. However, the collection of particles within a filter media is not, contrary to popular belief, linked to a simple screen effect. The phenomena involved are much more complex and require the consideration of aerosol interactions, filter media and process conditions to select the best fiber filter for a given application. Aerosol Filtration, book for students, hygiene or process engineers, fibrous media manufacturers, designers, and filtration system suppliers or users addresses the filtration of aerosols in six chapters. These chapters cover physics and aerosol characterization, the fibrous media, and efficiency and filter clogging by solid or liquid aerosols, with special attention to the filtration of the nanoparticles.
Analyses the behavior of fibrous media against solid and liquid aerosols
Presents models of efficiency and pressure drop
Introduces computing elements for estimating the lifetime of filters
Provides guidance for designing filters and predicting their behavior over time
Universities; Research centers; R&D industries; Original Equipment Manufacturers of filtration systems
Dedication
Notation
Introduction
1: An Introduction to Aerosols
Abstract
1.1 Characteristics of a gaseous medium
1.2 Inertial parameters
1.3 Diffusional parameter
1.4 Equivalent diameter
1.5 Nanostructured particles
2: Fibrous Media
Abstract
2.1 Introduction
2.2 Manufacturing processes for non-woven media
2.3 Developing “high-performing” fibers
2.4 Characterization of fibrous media
2.5 From web to filter
3: Initial Pressure Drop for Fibrous Media
Abstract
3.1 Pressure drop across a flat media
3.2 Pressure drop for pleated fibrous media
4: Initial Pressure Efficiency of a Fibrous Media
Abstract
4.1 Introduction
4.2 Estimating efficiency
4.3 Single fiber efficiency
4.4 Overall filter efficiency
4.5 Conclusion
5: Filtration of Solid Aerosols
Abstract
5.1 Overview
5.2 Depth filtration
5.3 Transition zone between depth filtration and surface filtration
5.4 Surface filtration
5.5 Reduction in filtration area
5.6 Full models
5.7 Influence of humidity in the air
6: Filtration of Liquid Aerosols
Abstract
6.1 Overview
6.2 Clogging by liquid aerosols
6.3 Clogging models
6.4 Binary mixture of liquid and solid aerosols
6.5 Conclusion
Adhesion of Particles
A.1 Van der Waals force
A.2 Capillary force
A.3 Electrostatic adhesion
A.4 Influence of roughness
A.5 Summary
Index
No. of pages: 226
Language: English
Edition: 1
Published: November 23, 2016
Imprint: ISTE Press - Elsevier
Hardback ISBN: 9781785482151
eBook ISBN: 9780081021163
DT
Dominique Thomas
Professor of Process Engineering at the University of Lorraine. His research is in aerosol filtration, a subject he introduced to the laboratory in 1994 (The Laboratory Reactions and Process Engineering (UMR CNRS 7274)). His research focuses on the separation of liquid and / or solid (nano to micron dimensions) with filter media or other methods of separation and characterization of aerosols. His research interests include: areas of personal safety (respirators, safety filters), the environment (atmospheric particulate emissions) and methods (protection filter). He is board member of the ASFERA (French Association for Studies and Research on Aerosols), founding member and vice president of the French Society of Fluid Separations-Particles (SF2P).
Affiliations and expertise
Professor of Process Engineering, University of Lorraine, France
AC
Augustin Charvet
Assistant Professor of Process Engineering at the University of Lorraine, France. His research studies deal with the characterization of aerosols and their collection with different kinds of separators (fibrous filters, bubble columns, granular beds, etc.).
Affiliations and expertise
Lecturer, Department of Chemical Engineering, IUT Nancy-Brabois, and Process Engineering, University of Lorraine, France
NB
Nathalie Bardin-Monnier
Assistant Professor of Process Engineering at the University of Lorraine, France. Her research studies deal with the filtration of aerosols and dust explosions and are conducted using computational tools such as CFD codes.
Affiliations and expertise
Lecturer, IUT Nancy-Braboi, France
JA
Jean-Christophe Appert-Collin
Assistant Professor of Process Engineering at the University of Lorraine, France. His research, conducted in the Reactions and Chemical Engineering Laboratory, focuses on filtration of solid and liquid aerosols by fibrous media.
Affiliations and expertise
Lecturer, Department of Chemical Engineering, IUT Nancy-Brabois, and Process Engineering, University of Lorraine, France