Stripping oxygen from strike water using CO2

[chipmunk]

I've been experimenting with this some to get a rough idea of how much gas and time are required. I've tried both CO2 and N2. They both work, but with the size of my HLT, I'd say they are both inefficient.

Very cool! I read on one of the forums about someone using steam as a stripping vapor. This idea is interesting to those of us with low powered electric rigs... Unfortunately santa didn’t bring me a DO meter this year so can’t really experiment.

 

[Franz]

Basically the yeast does not react well to sulfites.

Sorry if this is a stupid question but this refers to Potassium metabisulfite too or something else?

 

[Cool_Hand_Luke]

Very cool! I read on one of the forums about someone using steam as a stripping vapor. This idea is interesting to those of us with low powered electric rigs... Unfortunately santa didn’t bring me a DO meter this year so can’t really experiment.

Steam is very commonly used in industrial plants or power plants to remove oxygen from the boiler feed water to prevent corrosion in the system. It’s run in a counter flow arrangement against the feedwater in a vessel called a deaerator. The water flows down across a series of trays to maximize contact time as steam flows upwards. Low pressure steam is typically used (around 5psig). It is effective but I’m not sure if scaling to the homebrew level would make much sense. Might be simpler to use some of the other methods described here.

 

[Bilsch]

I can hear screams of anguish and heads exploding on the LOB forum.

All it really takes is an open mind and the willingness to try something different from the way you've always done it before.

Not at all, I think you have covered it nicely.

 

[Bilsch]

Sorry if this is a stupid question but this refers to Potassium metabisulfite too or something else?

It's just shorthand for either Sodium or Potassium metabisulfite.

 

[Bilsch]

And if you use a HLT, then it would appear that there will be dead yeast and yeast products at the bottom of that kettle. Meaning that there will then be an additional cleaning step after the brew day, whereas without yeast the HLT was basically clean and good to go for the next brew. So maybe not quite as 'quick and easy' for the 3v folks. Goes into a "work/benefit" analysis, like many other optional steps.

It's true there is a yeast residue left in the HLT but IME it's takes way less time and effort to clean that out then heating to boiling and cooling before strike. There are others that prefer to boil and so it's nice to have choices. Try it both ways and see which way you like best.