Examples of Steady-State Zones

Equation 6.13 is the desired solution to Eq. 6.4, subject only to the two conditions that J0IW is a constant and Wl Dr is independent of c. 

In most cases of interest, velocity W can be written in the form 

With Eq. 6.14 and the assumption of constant diffusivity DT, the integral of Eqs. 6.12 and 6.13 acquires the form 

When this form is substituted back into Eq. 6.13, we get 

We now concentrate on three classes of separations in which steady-state zones are described by Eq. 6.16. The specific separation techniques are discussed in more detail in subsequent chapters. 

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