Precipitation classification function

The width of the size distribution is often measured in terms of the coefficient of variation (c.v.) of the mass distribution. Randolph and Larson [98] have shown that the coefficient of variation d the mass distribution is constant at 50% for this type of precipitator. This coefficient of variation is usually too large for ceramic powders. Attempts to narrow the size distribution of particles generated in a CSTR can be made by classified product removal, as shown in Figure 6.24. The classification function, p(R), is similar to those discussed in Section 4.2 and can be easily added to the population balance as follows ... 

Organic compounds can be suitably and systematically classified by group and classification reactions. Color and precipitation reactions lead to the determination of the presence of functional groups, and the analyst can thus choose a suitable means for further analysis. For practical procedure see the general remarks on p. 51 and Table 1. 

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