Method of selectively removing adsorbed calcium and magnesium fr

Details Method of selectively removing adsorbed calcium and magnesium fr Method of selectively removing adsorbed calcium and magnesium fr

1981-06-22

1982-12-14

Cintins, Ivars C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

210677, 210687, B01J 4900

Patent

active

043638805

ABSTRACT:
Adsorbed calcium is selectively removed from cation exchange resins in the presence of adsorbed magnesium by eluting the resin with aqueous sulfuric acid saturated with CaSO.sub.4 and undersaturated with MgSO.sub.4 to obtain a solution supersaturated with CaSO.sub.4 from which the CaSO.sub.4 can be readily precipitated. The magnesium is subsequently removed from the resin by eluting with aqueous sulfuric acid, such as 20-70% H.sub.2 SO.sub.4. The method is advantageously used in the regeneration of cation exchange resins, such as the loaded resins used for treatment of phosphate rock-derived phosphoric acid.

REFERENCES:
patent: 3403097 (1968-09-01), Yamashiki et al.
patent: 3494881 (1970-02-01), Ryan et al.
patent: 3591415 (1971-07-01), Zievers et al.
patent: 3627705 (1971-12-01), Kingsbury
patent: 4207397 (1980-06-01), Davis et al.
patent: 4280904 (1981-07-01), Carlson

Affiliated with

Also associated with

Rating

Method of selectively removing adsorbed calcium and magnesium fr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of selectively removing adsorbed calcium and magnesium fr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of selectively removing adsorbed calcium and magnesium fr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1201797