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DIFFUSION
MASS TRANSFER IN FLUID SYSTEMS
THIRD EDITION
Diffusion: Mass Transfer in Fluid Systems brings unsurpassed, engaging clarity to plex
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 central to our daily lives, important in phenomena as diverse as the dispersal
of pollutants to digestion in the small intestine. For students, this new edition goes to the
basics of mass transfer and diffusion, illustrating the theory with worked examples and
stimulating discussion questions. For professional scientists and engineers, it explores emerg-
ing topics and explains where new challenges are expected. Retaining its trademark enthu-
siastic style, the book’s broad coverage now extends to biology and medicine.
This accessible introduction to diffusion and separation processes gives chemical and
biochemical engineering students what they need to understand these important concepts.
New to this Edition
Diffusion: Enhanced treatment of topics such as Brownian motion, composite materials,
and barrier membranes.
Mass transfer: Fundamentals supplemented by material on when theories work and why
they fail.
Absorption: Extensions include sections on blood oxygenators, artificial kidneys, and
respiratory systems.
Distillation: Split into two focused chapters on staged distillation and on differential
distillation with structured packing.
Advanced Topics: Including electrolyte transport, spinodal position, and diffusion
through cavities.
New Problems: Topics are broad, supported by password-protected solutions found at
sler.
Professor Cussler teaches chemical engineering at the University of Minnesota. His re-
search, which centers on membrane separations, has led to over 200 papers and 4 books. A
member of the National Academy of Engineering