عنوان

Fibrous Filter Media.

0081005822

9780081005828

b387630

Fibrous Filter Media.

[Book]

Cambridge Elsevier Science & Technology,

2017. ©2017.

(318 pages).

Woodhead Publishing Series in Textiles Ser.

Front Cover -- Fibrous Filter Media -- Copyright Page -- Contents -- List of contributors -- Preface -- I. Principles of Fibrous Filtration -- 1 Gas filtration -- 1.1 Introduction -- 1.2 History of air filters -- 1.3 Principles of gas filtration -- 1.3.1 Single fiber efficiency -- 1.3.1.1 Interception -- 1.3.1.2 Diffusional deposition -- 1.3.1.3 Inertial impaction -- 1.3.1.4 Electrostatic attraction -- 1.3.1.5 Effect of slip factor -- 1.3.1.6 Total collection efficiency -- 1.3.1.7 Most penetrating particle size -- 1.3.1.8 Filter efficiency -- 1.3.2 Pressure drop -- 1.3.2.1 Effect of slip factor -- 1.3.3 Fan model -- 1.3.4 Quality factor and optimization -- 1.4 Filters for solid-gas separation -- 1.4.1 Filters for indoor air quality -- 1.4.2 Media development and future trends -- 1.5 Conclusions -- References -- 2 Industrial liquid filtration equipment -- 2.1 Introduction -- 2.2 Defining solids -- 2.3 Glossary of filtration terms -- 2.4 Filter presses -- 2.4.1 General background -- 2.4.2 Operational problems and limitations -- 2.4.3 Filter media -- 2.4.4 Filter aids -- 2.4.5 Filter cake washing -- 2.4.6 Alternatives -- 2.5 Belt filter presses -- 2.5.1 General background -- 2.5.2 Design and operating features -- 2.6 Rotary drum filters -- 2.6.1 General description -- 2.6.2 Filter aids -- Further reading -- 3 Fibrous filtration of liquid aerosols -- 3.1 Introduction -- 3.2 Experimental studies of whole filters -- 3.3 Particle (droplet) capture and single fiber efficiency -- 3.4 Filter efficiency and penetration -- 3.5 Pressure drop and saturation models -- 3.6 Iterative models -- 3.7 Fiber wetting and single fiber studies -- 3.8 Capillarity -- 3.9 Colloid aerosols -- 3.10 Visualization -- 3.11 Simulation -- 3.11.1 Single fiber systems -- 3.11.2 Multiple fiber systems -- 3.12 Conclusion -- References. 4 The charging and stability of electret filters -- 4.1 Introduction -- 4.2 Electrets -- 4.3 Electret filters -- 4.4 Basic electret characteristics -- 4.4.1 Charging and polarization phenomena -- 4.4.2 Charge motions within electrets -- 4.5 Methods for producing electret filters -- 4.5.1 Corona discharge -- 4.5.2 Triboelectrification -- 4.5.3 Liquid contact charging -- 4.5.4 Charging of electrospun media -- References -- Further reading -- II. Types of Fibrous Filters -- 5 Knitted fibrous filter media -- 5.1 Introduction -- 5.2 Structure and application -- 5.3 Pressure drop and efficiency -- 5.4 Mist eliminator-specific research -- 5.5 Summary and conclusion -- References -- 6 Nonwoven fabric filters -- 6.1 Introduction -- 6.2 Fiber types and processing for nonwoven fabric filters -- 6.2.1 Fibers used in nonwoven filter -- 6.2.2 Wetlaid nonwoven fabrics -- 6.2.3 Needlepunched nonwoven fabrics -- 6.2.3.1 Hydroentangled nonwoven fabrics -- 6.2.4 Spunbond and meltblown nonwoven fabrics -- 6.2.5 Nanofiber nonwoven membrane -- 6.3 Filtration mechanism of nonwoven fabrics and their filter efficiency -- 6.3.1 Nomenclature -- 6.3.2 Filtration mechanism and single-fiber filtration theory in nonwoven filters -- 6.3.3 Filter efficiency of nonwoven filters having multiple fiber components -- 6.3.4 Pressure drop -- 6.3.5 Mechanism of nonwoven blood filtration -- 6.4 Applications of nonwoven fabric filters -- 6.4.1 Nonwoven air filters -- 6.4.2 Nonwoven water filters -- 6.4.3 Nonwoven oil filters -- 6.4.4 Nonwoven coalescing filters -- 6.5 Future trends -- 6.6 Sources of further information -- References -- 7 Simulation of filtration in shaped fiber media -- 7.1 Introduction -- 7.2 Solution methodology -- 7.2.1 Flow solution -- 7.2.2 Particle transport -- 7.2.3 Numerical solution -- 7.2.4 Efficiency calculation -- 7.3 Results and discussion. 7.3.1 Single-fiber efficiency -- 7.3.2 Figure of merit -- 7.4 Conclusions and continuing work -- Acknowledgment -- References -- 8 Plasma textiles as fibrous filter media -- 8.1 Introduction -- 8.2 Single fiber theory -- 8.3 Single fiber efficiency -- 8.4 Two infinitely long parallel cylinders -- 8.5 Filtration testing of a plasma textile -- 8.6 Filtration efficiency results -- 8.7 Conclusions -- References -- III. Applications of Fibrous Filters -- 9 Nanofibers for coalescing filter media for water-diesel separation -- 9.1 Brief review of coalescing filter media -- 9.1.1 Motivation -- 9.1.2 SAE standards -- 9.1.3 Open literature summary -- 9.1.4 Barrier and depth media coalescence -- 9.2 Brief review of electrospinning -- 9.2.1 Description of electrospinning -- 9.2.2 Some literature on electrospinning -- 9.2.3 Applications of electrospun fibers in filter media -- 9.2.4 Superhydrophobicity -- 9.3 Experimental description -- 9.3.1 Bench scale experimental setup -- 9.3.2 Filter media preparation -- 9.3.3 Experimental performance -- 9.3.4 Experimental conclusions -- 9.4 Conclusions -- References -- 10 Air filtration in aero engines -- 10.1 Introduction -- 10.2 History of the Engine Inlet Barrier Filter -- 10.3 EIBF design -- 10.4 EIBF applications -- 10.5 EIBF performance -- 10.6 EIBF performance modeling -- 10.7 EIBF case study -- References -- 11 Filtration of drinking water -- 11.1 Introduction -- 11.2 Types of water filter -- 11.3 Materials -- 11.4 Applications -- 11.5 Future trends -- 11.6 Conclusion -- References -- 12 Application of nanofibrous membranes and their suitability for membrane bioreactor processes in wastewater treatment -- 12.1 Introduction -- 12.2 Membrane bioreactors -- 12.2.1 Brief perspective on membrane bioreactor development -- 12.2.1.1 Submerged membrane bioreactors versus the activated sludge process -- 12.2.2 Fouling. 12.3 Nanofibrous membrane -- 12.3.1 Membrane construction -- 12.3.1.1 Electrospinning -- 12.3.1.2 Melt blown -- 12.3.2 Membrane composition and performance -- 12.3.3 Commercial applications -- 12.3.3.1 Nanofibrous membranes in environmental applications -- 12.4 Future directions -- 12.5 Conclusions -- References -- Index -- Back Cover.

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Philip Brown

Christopher L Cox

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