You are tasked to use a strong-acid polystyrene cross-linked with pure divinyl benzene ion-exchanger resin operated with a sulfonated sodium to remove aluminum from a wastewaterstream.
the influent water has only two cations with 5 meq/l of aluminum and 2.5 meq/l of sodium.
the exchanger has a capacity of 2 eq/l with an operating equilibrium constant of 3 foraluminum.
a) derive the relationship between the concentration of aluminum in solution and resin thatgoverns this exchange. also, generalize the equation for an ion of valency ânâ.

b) write down the chemical reaction that is expected to take place between the resin andaluminum in wastewater. estimate how much of wastewater can be treated per ft3 of resinbefore it has to be regenerated.