This overview of diffusion and separation processes brings unsurpassed, engaging clarity to this complex topic. Diffusion is a key part of the undergraduate chemical engineering curriculum and at the core of understanding chemical purification and reaction engineering. This spontaneous mixing process is also central to our daily lives, with importance in phenomena as diverse as the dispersal of pollutants to digestion in the small intestine. For students, Diffusion goes from the basics of mass transfer and diffusion itself, with strong support through worked examples and a range of student questions. It also takes the reader right through to the cutting edge of our understanding, and the new examples in this third edition will appeal to professional scientists and engineers. Retaining the trademark enthusiastic style, the broad coverage now extends to biology and medicine.
List of Symbols
Preface
1 Models for Diffusion 1
2 Diffusion in Dilute Solutions 13
3 Diffusion in Concentrated Solutions 50
4 Dispersion 79
5 Values of Diffusion Coefficients 101
6 Diffusion of Interacting Species 142
7 Multicomponent Diffusion 185
8 Fundamentals of Mass Transfer 211
9 Absorption 245
10 Distillation 265
11 Extraction 294
12 Adsorption 308
13 Forced Convection 331
14 Free Convection 356
15 General Questions and Heterogeneous Chemical Reactions 371
16 Homogeneous Chemical Reactions 390
17 Membranes 427
18 Controlled Release and Related Phenomena 467
19 Heat Transfer 479
20 Simultaneous Heat and Mass Transfer 503
Problems 529
Subject Index 574
Materials Index 579
