Membrane Processing: Dairy and Beverage Applications

369 Pages·5.611 MB·English

Membrane Processing
TheSocietyofDairyTechnology(SDT)hasjoinedwithWiley-Blackwelltoproduceaseries
oftechnicaldairy-relatedhandbooksprovidinganinvaluableresourceforallthoseinvolved
in the dairy industry, from practitioners to technologists, working in both traditional and
modern large-scale dairy operations. For information regarding the SDT, please contact
Maurice Walton, Executive Director, Society of Dairy Technology, PO Box 12, Appleby in
Westmorland,CA166YJ,UK.email:[email protected]
Other volumes in the Society of Dairy Technology book series:
Probiotic Dairy Products (ISBN 978 1 4051 2124 8)
Fermented Milks (ISBN 978 0 6320 6458 8)
Brined Cheeses (ISBN 978 1 4051 2460 7)
Structure of Dairy Products (ISBN 978 1 4051 2975 6)
Cleaning-in-Place (ISBN 978 1 4051 5503 8)
Milk Processing and Quality Management (ISBN 978 1 4051 4530 5)
Dairy Fats (ISBN 978 1 4051 5090 3)
Dairy Powders and Concentrated Products (ISBN 978 1 4051 5764 3)
Technology of Cheesemaking, Second Edition (ISBN 978 1 4051 8298 0)
Processed Cheese and Analogues (ISBN 978 1 4051 8642 1)
Membrane Processing
Dairy and Beverage Applications
Edited by
A.Y. Tamime
ConsultantinDairyScienceandTechnology,Ayr,UK
A John Wiley & Sons, Ltd., Publication
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1 2013
Contents
PrefacetotheTechnicalSeries xiii
Preface xv
Contributors xvii
1 Development of Membrane Processes 1
K. Smith
1.1 Historical background 1
1.2 Basic principles of membrane separations 3
1.2.1 Depth versus screen filters 3
1.2.2 Isotropic versus anisotropic membranes 4
1.2.3 Cross-flow filtration 5
1.2.4 Requirements of membrane processes 7
1.3 Types of membrane separations 8
1.3.1 Reverse osmosis 8
1.3.2 Nanofiltration 8
1.3.3 Ultrafiltration 9
1.3.4 Microfiltration 9
1.4 Theory of membrane transport 9
1.4.1 Transport models 9
1.4.2 Reverse osmosis/nanofiltration membranes 10
1.4.3 Ultrafiltration/microfiltration membranes 11
1.5 Factors affecting membrane separations 11
1.5.1 Factors affecting reverse osmosis/nanofiltration separations 11
1.5.2 Factors affecting ultrafiltration/microfiltration separations 12
1.5.3 System parameters 13
1.6 General characteristics of membrane processes 13
1.6.1 Retention and rejection 13
1.6.2 Pore size 14
1.6.3 Molecular weight cut-off 14
1.6.4 Flux 14
1.6.5 Concentration factor 15
1.6.6 Membrane life 15
1.7 Conclusion and future development 15
Suggested literature 15
vi Contents
2 Principles of Membrane Filtration 17
A. Hausmann, M.C. Duke and T. Demmer
2.1 Introduction and definitions 17
2.1.1 Membrane processes 17
2.1.2 Definitions of membrane processes 18
2.2 Membrane properties based on materials 24
2.2.1 Membrane structure 24
2.2.2 Material properties 26
2.3 Flux behaviour in pressure-driven membrane operations 29
2.3.1 Modelling flux behaviour 30
2.3.2 Influence of chemical potential on the reverse osmosis
process 35
2.4 Effects of feed characteristics and operating parameter on separation
efficiency 37
2.4.1 Effects of feed components 37
2.4.2 Effects of operating parameters 40
2.5 Cross-flow systems 43
2.5.1 Background 43
2.5.2 Single-pass versus feed-and-bleed operation 43
2.6 Recent membrane processes following different operating principles 44
2.6.1 Forward osmosis 44
2.6.2 Osmotic distillation 45
2.6.3 Membrane distillation 46
2.7 Conclusions 47
References 47
3 Commercial Membrane Technology 52
K. Smith
3.1 Introduction: polymers used in membrane manufacture 52
3.1.1 Cellulose acetate 52
3.1.2 Polysulphone/polyethersulphone 53
3.1.3 Polyamide 54
3.1.4 Polyvinylidene fluoride 55
3.1.5 Thin-film composites 55
3.2 Other materials used for membranes 56
3.2.1 Ceramic membranes 56
3.2.2 Metallic membranes 57
3.3 Membrane configuration 58
3.3.1 Spiral-wound 59
3.3.2 Tubular 61
3.3.3 Hollow fibre 63
3.3.4 Plate and frame 64
3.4 Modes of operation 65
3.4.1 Diafiltration 66
Contents vii
3.4.2 Batch design 67
3.4.3 Continuous design 69
3.5 Conclusion and future developments 71
Suggested literature 71
4 Membrane Fouling, Cleaning and Disinfection 73
L.L.A. Koh, M. Ashokkumar and S.E. Kentish
4.1 Introduction 73
4.2 Flux reduction 73
4.2.1 Membrane resistance 74
4.2.2 Concentration polarisation 74
4.2.3 Fouling 80
4.2.4 Fouling in the beverage industry 83
4.2.5 Fouling in the dairy industry 83
4.3 Membrane cleaning and disinfection 84
4.3.1 Cleaning methods 84
4.3.2 Chemical cleaning factors 87
4.3.3 Disinfection 95
4.3.4 Cleaning procedures 95
4.3.5 Chemical cleaning agents recovery and reuse 97
4.4 Recent developments 98
4.5 Conclusions 99
4.6 Nomenclature 100
References 102
5 General Application for the Treatment of Effluent and Reuse
of Wastewater 107
N.A. Milne and S.R. Gray
5.1 General wastewater quality issues 107
5.2 General wastewater treatment 108
5.2.1 Primary treatment: solids, fats, oils and grease removal 110
5.2.2 Secondarytreatment:biologicaltreatmentandthemembrane
bioreactor 110
5.2.3 Tertiary treatment: disinfection 115
5.2.4 Desalination: nanofiltration and reverse osmosis 116
5.3 Water reuse 117
5.4 Conclusions and future applications 123
References 124
6 Liquid Milk Processing 128
G. Ge´san-Guiziou
6.1 Introduction 128
6.2 On-farm concentration of milk 128
6.3 Protein standardisation by ultrafiltration 130
6.3.1 Advantages of protein standardisation 131
viii Contents
6.3.2 Regulatory aspects 132
6.3.3 Process involved 133
6.4 Removal of bacteria by microfiltration 134
6.4.1 Microfiltration process: operating conditions
and performances 134
6.4.2 Industrial applications 137
6.5 Fractionation of fat 138
6.6 Removal of somatic cells by microfiltration 139
6.7 Conclusions and future trends 140
References 140
7 Membrane Processing of Fermented Milks 143
B. O¨zer and A.Y. Tamime
7.1 Introduction 143
7.2 Microflora of the starter cultures 144
7.3 Patterns of production and consumption 145
7.4 Manufacturing practice of gel-type (set and stirred) products 145
7.4.1 Mesophilic–lactic fermentations 145
7.4.2 Thermophilic–lactic fermentations 148
7.4.3 Yeast–lactic fermentations 151
7.4.4 Mould–lactic fermentations 152
7.5 Manufacturing practice of concentrated products 152
7.5.1 Background 152
7.5.2 Concentrated yoghurt 153
7.5.3 Shrikhand and chakka 156
7.5.4 Ymer 156
7.5.5 Skyr 158
7.6 Quality control 158
7.6.1 Compositional quality 158
7.6.2 Microbiological quality 167
7.6.3 Organoleptic properties 168
7.7 Conclusion 169
References 170
8 Cheese 176
V.V. Mistry
8.1 Background 176
8.2 Properties of membrane processed concentrates 177
8.2.1 Buffering capacity 177
8.2.2 Rheology of concentrated milks 178
8.2.3 Rennet coagulation 178
8.3 Applications of ultrafiltration in cheesemaking 178
8.3.1 Protein standardisation 178
Contents ix
8.3.2 Medium or intermediate concentrated retentates 179
8.3.3 Liquid pre-cheeses concept 180
8.3.4 Application of ultrafiltration for fresh and soft cheeses 184
8.4 Cheese quality 185
8.5 Applications of microfiltration in cheesemaking 186
8.5.1 Removal of bacteria 186
8.5.2 Casein standardisation 187
8.5.3 α -/β-casein ratio adjustment by microfiltration 187
s
8.5.4 Recovery of fat and brine 188
8.6 Nanofiltration 188
8.7 Milk protein concentrates 189
8.8 Future potential 189
References 190
9 Whey Processing 193
L. Ramchandran and T. Vasiljevic
9.1 Introduction 193
9.2 Whey: components, their functionality and uses 193
9.3 Problems of traditional whey processing 195
9.4 Membranes in whey processing 196
9.4.1 Microfiltration 197
9.4.2 Ultrafiltration 198
9.4.3 Diafiltration 199
9.4.4 Nanofiltration and reverse osmosis 200
9.4.5 Electrodialysis and other related processes 200
9.4.6 Integrated processes 204
9.5 Conclusions 204
References 205
10 Concentrated Milk and Powders 208
G. Ge´san-Guiziou
10.1 Introduction 208
10.2 Concentrated milks and powders 208
10.2.1 Background 208
10.2.2 Production of concentrated whole milk and powder 209
10.2.3 Production of concentrated skimmed milk and powder 211
10.2.4 Applications of reverse osmosis concentrated milks 215
10.2.5 Dulce de Leche 217
10.3 Milk protein concentrates 218
10.3.1 Manufacture of milk protein concentrates 218
10.3.2 Applications of milk protein concentrates 219
10.4 Conclusion and future trends 222
References 222
x Contents
11 Further Applications of Membrane Filtration in Dairy Processing 225
J.A. O’Mahony and J.J. Tuohy
11.1 Introduction 225
11.2 Fractionation of milk proteins using membranes 226
11.2.1 Separation of casein and whey proteins in milk 226
11.2.2 Fractionation of individual casein proteins 229
11.2.3 Fractionation of individual whey proteins 232
11.2.4 Fractionation of milk protein hydrolysates 233
11.2.5 Enrichment of osteopontin from milk/whey 238
11.2.6 Production of microparticulated whey protein 239
11.2.7 Isolation and enrichment of growth factors from milk/whey 240
11.3 Fractionation of milk fat using membranes 240
11.3.1 Isolation and enrichment of native milk fat globules 240
11.3.2 Isolation and enrichment of milk fat globule membrane 242
11.3.3 Removal of phospholipids from liquid whey 243
11.3.4 Filter sterilisation of polyunsaturated fatty acids 244
11.4 Fractionation of milk carbohydrates using membranes 245
11.4.1 Isolation and purification of bovine milk oligosaccharides 245
11.4.2 Filter sterilisation of lactase 247
11.4.3 Lactic acid removal and purification 247
11.5 Fractionation of milk salts using membranes 248
11.5.1 Demineralisation using membranes 248
11.5.2 Demineralisation using electrodialysis 249
11.6 Conclusions and future trends 251
References 253
12 Fruit Juices 262
A. Cassano
12.1 Introduction 262
12.1.1 General Background 262
12.1.2 Background to manufacturing practice 262
12.2 Fruit juice clarification by microfiltration and ultrafiltration 265
12.2.1 Microfiltration 265
12.2.2 Ultrafiltration 265
12.2.3 Selection of microfiltration and ultrafiltration membranes 266
12.3 Membrane fouling and membrane cleaning 266
12.3.1 Membrane fouling 266
12.3.2 Methods of reducing membrane fouling 267
12.3.3 Methods of fouling treatment 268
12.4 Performance of microfiltration and ultrafiltration membranes 269
12.5 Process configurations 273
12.6 Quality of the clarified juices 274
12.7 Integrated processes 276
12.8 Conclusions and future development 277
References 277