DOCTOR - 10-6-2006 at 04:05
Dar every body:
i have on my work a lot of quantities of sol.n of exhausted EDTA by hardness,
My Q. is :Ist possible to refresh this quantity to use it again,i.e: remove the hardness then can use it agian
unionised - 10-6-2006 at 09:59
It should be possible to add acid to a concentrated solution of the Ca EDTA complex and precipitate the free acid form of EDTA which isn't very
soluble in water.
Whether or ont it is worthwhile is another matter.