III . 2 Preparation of synthetic membranes 72 III . 3 Phase inversion membranes 75 III. 3. 1 Preparation by evaporation 76 III . 3. 2 Precipitation. from the vapour phase 76 III . 3. 3 Precipitation by controlled evaporation 76 Thermal precipitation 76 III . 3. 4 III . 3. 5 Immersion precipitation 77 Preparation techniques for immersion precipitation 77 III . 4 Flat membranes 77 III . 4. 1 78 III . 4. 2 Tubular membranes 81 III . 5 Preparation techniques for composite membranes 82 III. 5. 1 Interfacial polymerisation Dip-coating 83 III . 5. 2 III . 5. 3 Plasma polymerisation 86 III . 5. 4 Modification of homogeneous dense membranes 87 III . 6 Phase separation in polymer systems 89 III . 6. 1 Introduction 89 III . 6. 1. 1 Thermodynamics 89 III . 6. 2 Demixing processes 99 III . 6. 2. 1 Binary mixtures 99 III . 6. 2. 2 Ternary systems 102 III . 6. 3 Crystallisation 104 III . 6. 4 Gelation 106 III . 6. 5 Vitrification 108 III . 6. 6 Thermal precipitation 109 III . 6. 7 Immersion precipitation 110 III . 6. 8 Diffusional aspects 114 III . 6. 9 Mechanism of membrane formation 117 III. 7 Influence of various parameters on membrane morphology 123 III. 7. 1 Choice of solvent-nonsolvent system 123 III . 7. 2 Choice of the polymer 129 III . 7. 3 Polymer concentration 130 III . 7. 4 Composition of the coagulation bath 132 III . 7. 5 Composition of the casting solution 133 III . 7.
Auflage
Sprache
Verlagsort
Zielgruppe
Für höhere Schule und Studium
Für Beruf und Forschung
Research
Editions-Typ
Illustrationen
Maße
Höhe: 240 mm
Breite: 160 mm
Dicke: 32 mm
Gewicht
ISBN-13
978-0-7923-4248-9 (9780792342489)
DOI
10.1007/978-94-009-1766-8
Schweitzer Klassifikation
I Introduction.- I. 1 Separation processes.- I. 2 Introduction to membrane processes.- I. 3 History.- I. 4 Definition of a membrane.- I. 5 Membrane processes.- I. 6 Solved problems.- I. 7 Unsolved problems.- I. 8 Literature.- II Materials and material properties.- II. 1 Introduction.- II. 2 Polymers.- II. 3 Stereoisomerism.- II. 4 Chain flexibility.- II. 5 Molecular weight.- II. 6 Chain interactions.- II. 7 State of the polymer.- II. 8 Effect of polymeric structure on Tg.- II. 9 Glass transition temperature depression.- II. 10 Thermal and chemical stability.- II. 11 Mechanical properties.- II. 12 Elastomers.- II. 13 Thermoplastic elastomers.- II. 14 Polyelectrolytes.- II. 15 Polymer blends.- II. 16 Membrane polymers.- II. 17 Inorganic membranes.- II. 18 Biological membranes.- II. 19 Solved problems.- II. 20 Unsolved problems.- II. 21 Literature.- III Preparation of synthetic membranes.- III. 1 Introduction.- III. 2 Preparation of synthetic membranes.- III. 3 Phase inversion membranes.-III.4 Preparation techniques for immersion precipitation.- III.5 Preparation techniques for composite membranes.- III.6 Phase separation in polymer systems.- III.7 Influence of various parameters on membrane morphology.- III. 8 Inorganic membranes.- III.9 Solved problems.- III.10 Unsolved problems.- III. 11 Literature.- IV Characterisation of membranes.- IV. 1 Introduction.- IV. 2 Membrane characterization.- IV. 3 Characterisation of porous membranes.- IV. 4 Characterisation of ionic membranes.- IV. 5 Characterisation of nonporous membranes.- IV. 6 Solved problems.- IV. 7 Unsolved problems.- IV. 8 Literature.- V Transport in membranes.- V. 1 Introduction.- V. 2 Driving forces.- V. 3 Nonequilibrium thermodynamics.- V. 4 Transport through porous membranes.- V. 5 Transport through nonporous membranes.- V. 6 Transport through membranes. A unified approach.- V. 7 Transport in ion-exchange membranes.- V. 8 Solved problems.- V. 9 Unsolved problems.- V. 8 Literature.- VI Membrane processes.-VI. 1 Introduction.- VI. 2 Osmosis.- VI. 3 Pressure driven membrane processes.- VI. 4 Concentration as driving force.- VI. 5 Thermally driven membrane processes.- VI. 6 Membrane contactors.- VI. 7 Electrically driven membrane processes.- VI. 8 Membrane reactors and membrane bioreactors.- VI. 9 Solved problems.- VI. 10 Unsolved problems.- VI. 11 Literature.- VII Polarisation phenomena and fouling.- VII. 1 Introduction.- VII. 2 Concentration polarisation.- VII. 3 Turbulence promoters.- VII. 4 Pressure drop.- VII. 5 Characteristic flux behaviour in pressure driven membrane operations.- VII. 6 Gel layer model.- VII. 7 Osmotic pressure model.- VII. 8 Boundary layer resistance model.- VII. 9 Concentration polarisation in diffusive membrane separations.- VII. 10 Concentration polarisation in electrodialysis.- VII. 11 Temperature polarization.- VII. 12 Membrane fouling.- VII. 13 Methods to reduce fouling.- VII. 14 Compaction.- VII. 15 Solved problems.- VII. 16 Unsolved problems.- VII. 17 Literature.- VIII Module and process design.- VIII. 1 Introduction.- VIII. 2 Plate-and-frame model.- VIII. 3 Spiral wound module.- VIII. 4 Tubular module.- VIII. 5 Capillary module.- VIII. 6 Hollow fiber module.- VIII. 7 Comparison of the module configurations.- VIII. 8 System design.- VIII. 9 Cross-flow operations.- VIII. 10 Hybrid dead-end/cross flow system.- VIII. 11 Cascade operations.- VIII. 12 Some examples of system design.- VIII. 13 Process parameters.- VIII. 14 Reverse osmosis.- VIII. 15 Diafiltration.- VIII. 16 Gas separation and vapour permeation.- VIII. 17 Pervaporation.- VIII. 18 Pervaporation.- VIII. 19 Dialysis.- VIII. 20 Energy requirements.- VIII. 21 Solved problems.- VIII. 22 Unsolved problems.- VIII. 23 Literature.- Appendix 1.- Appendix 2.- Answers to exercises: solved problems.- Answers to exercises: unsolved problems.- List of symbols.
