Aerosol Filtration
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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.
Key Features
- 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
Readership
Universities; Research centers; R&D industries; Original Equipment Manufacturers of filtration systems
Table of Contents
- 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
Product details
- No. of pages: 226
- Language: English
- Copyright: © ISTE Press - Elsevier 2016
- Published: November 23, 2016
- Imprint: ISTE Press - Elsevier
- eBook ISBN: 9780081021163
- Hardcover ISBN: 9781785482151
About the Authors
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
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
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
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