19.8 LUB Approach for Nonlinear Sorption Systems
At this point we will leave chromatography and return to a sorption process for removing a single solute with a long feed step followed by regeneration. In general, there are no analytical solutions of the complete mass and energy balances for nonlinear systems even for systems with one adsorbing component. An exception is isothermal systems when a constant pattern wave occurs. Constant pattern waves are concentration waves that do not change shape as they move down the column. They occur when solute movement analysis predicts a shock wave.
Experimental results (Figure 19-15) and shock wave analysis showed that after an entry region, wave shape for constant pattern waves is independent of distance ...
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