Surface modifying effects feed rate effect

The rates at which encrustations form and subsequently grow depend not only on the nature of the surface and the supersaturation eneountered, but also on the nucleation and growth kinetics of the crystallizing system. Since the kinetics can be greatly influenced by trace impurities, these extraneous substances can have important effects on encrustation in a crystallizer. Any ehange in feed liquor composition or the addition of habit modifiers (seetion 6.4) may, therefore, alter the encrustation characteristics of the system for better or for worse. It is important to be aware that such changes are likely and, if possible, make initial trials on the pilot scale. 

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