When speaking about capacity, we usually mean working capacity rather than full exchange capacity. Working capacity is not a constant value, it depends on many factors: brand of ionite, concentration and type of absorb! ions, pH of the solution, requirements for purifi! water, flow rate, height of the ionite layer and other requirements.
from an aqueous solution requires increasing the dose of the regenerating solution (r! line).
However, it is impossible to increase the concentration of the regenerating solution indefinitely (green line – theoretical relationship between the degree of inbound marketing and paid m!ia: the perfect allies? of the resin capacity and the consumption of the regenerating solution).
In practice, to achieve high capacity
It is necessary to increase the amount of resin. During the first filter cycle, the degree of restoration of ion exchange properties can reach 100%, but over time this value will decrease. For example, most manufacturers of water softening systems recommend using a NaCl solution with a concentration of 100 – 125 g / l to restore the capacity of the cation exchanger to 50 – 55% of the full exchange capacity.
When determining the capacity, it is necessary to know the ionic form of hindi directory resin (salt, acid, basic). During regeneration or during operation, the volume of the fill! resin changes, a process call! resin “breathing” occurs. The table shows how resins behave in various processes.
A distinction is made between cationites and anionites
The reactions in which how your company can better retain software developers participate are given in the table.
Moreover, in English-language literature, the symbol SAC denotes a strongly acidic cationite, SBA – a strongly basic anionite, WAC – a weakly acidic cationite, and WBA – a weakly basic anionite.
The ability to exchange ions is determin! by the presence of a functional group: strongly acidic cationites contain a sulfo group –SO3H, and weakly acidic cationites contain a carboxyl group –COOH.
Strongly acidic cationites exchange cations at any pH value of the solution, i.e. they behave like strong acids in the solution. And weakly acidic cationites are similar to weak acids and enter into an ion exchange reaction only at pH values above.