removal of sulphates
removal of sulphates
(OP)
during an experiment with the removal of sulphate from waste water @ different temperature I used calcium and barium-the barium worked but the calcium didnt react at all-any ideas or relevant sites





RE: removal of sulphates
Some rules of thumb:
Barium works, but is generally not recommended:
- cost
- potential environmental burden of water with traces of Ba (check with local authorities; typical emission limits for Ba are in range 2 - 10 mg/l).
For Ca-precipitation, check correct temperature. See FAQ on this forum.
Other processes than precipitation : check biological removal. (Biological removal is the option of choice of there is a simultaneous need for removal of metals).
Membrane methods, distillation, ... are methods you might not consider unless you really are forced to do so.