Dealkalization kinetics

H2O were prepared by either dehydrating commercial sodium silicate solutions or by autoclaving anhydrous glasses of comparable compositions. Regardless of their origin, dealkalization kinetics of these hydrosilicates favored high water content and lower alkali content. 

In a discussion of diffusion kinetics for dealkalization of Na20-Si02 H20 glasses it appears best to describe it as an ion-exchange reaction. 

Water treatment uses cycle dealkalization Base neutralization Number of exchange sites varies from low to high Rate of neutralization slow Tminutes Regeneration pH controlled, essentially 100% efficient Operating capacity dominated by kinetic factors Water treatment uses Acid neutralization... 

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