What flow rate should be maintained to accomplish metals removal?
APTsorb has a different affinity for each metal. The ion exchange reaction for Cu, Ni, and Pb is very fast. Co and Zn require a little more time. Individual testing may have to be done but in many cases 95% removal can be accomplished with an empty bed contact time of 20 minutes. Empty bed contact time (EBCT) is the amount of time a given volume of water is in contact with the same volume of saturated APTsorb. Results will be lessened if the metals are complexed with organics or if chelators are present. Complicating background chemistry will almost always diminish results.
