Sciencemadness Discussion Board

Mixed Salt System Solubility

CharlieLeoben - 6-2-2017 at 01:47

Hey Guys!

Currently working on a water management project for a gas field and our project partner is asking about the possibility of salt precipitations in the underground.

How do I calculate the solubility of salts in water under low T, high p conditions and (especially) in the presence of known concentrations of other salts?

In other words: How do I find out about NaCl solubility in water at 3000 m depth and 100 bar when there are already BaSO4, KCl and others contained in this water?

Kind regards

Sebastian

Eddygp - 6-2-2017 at 07:50

I'm pretty sure there will be no barium sulphate.

Either way this is just a bit of spoonfeeding - it literally is everywhere out there. Tried wiki?

Metacelsus - 6-2-2017 at 20:59

I doubt that solubility of most non-gaseous solutes varies appreciably with pressure over the range 1-100 bar. Therefore, you can just focus on temperature effects.

DraconicAcid - 7-2-2017 at 00:11

Quote: Originally posted by Metacelsus  
I doubt that solubility of most non-gaseous solutes varies appreciably with pressure over the range 1-100 bar. Therefore, you can just focus on temperature effects.

The pressure may not matter, but high concentrations of other solutes will.