Mass Transfer and Diffusion - Wiley

← Back to document page

Chapter3Mass Transfer and Diffusionbarriers, such as membranes, differing species mass -transferrates through the membrane govern equipment a binary mixture, molecular Diffusion of componentAwith respect to B occurs because of different potentialsor driving forces, which include differences (gradients)of concentration (ordinary Diffusion ), pressure (pressurediffusion), temperature (thermal Diffusion ), and external forcefields (forced Diffusion ) that act unequally on the differentchemical species present. Pressure Diffusion requires a largepressure gradient, which is achieved for gas mixtures with acentrifuge.

applications are relatively straightforward. Multicomponent ... If mass transfer in solids is involved, using small particles to decrease the distance in the direction of diffusion will ... • Define a mass-transfer coefficient and explain its analogy to the heat-transfer coefficient and its usefulness, as an

  Applications, Using, Heat, Transfer, Mass, Mass transfer