The Great Bottle Opener Giveaway

Home Brew Forums > Home Brewing Beer > General Techniques > Hydrogen Peroxide for Aeration

Reply
 
LinkBack Thread Tools
Old 05-29-2009, 08:23 PM   #1
bnscherm
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2008
Location: Cass City, MI (The Thumb)
Posts: 38
Liked 1 Times on 1 Posts

Default Hydrogen Peroxide for Aeration

Has anyone considered using hydrogen peroxide to aerate/oxygenate there wort prior to pitching? It is my understanding that H2O2 would decompose into two H2O molecules and one O2 molecule. Maybe someone with more of a chemistry background can chime in.

Seeing as how hydrogen peroxide is antiseptic I would think it would be important to add the H2O2 to the wort and give it a good stir before adding the yeast...

__________________
bnscherm is offline
 
Reply With Quote Quick reply to this message
Old 05-29-2009, 08:33 PM   #2
GilaMinumBeer
In yo' garage, steelin' yo parts.
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
GilaMinumBeer's Avatar
Recipes 
 
Join Date: Jan 2008
Location: Oblivion
Posts: 46,864
Liked 4604 Times on 4299 Posts
Likes Given: 55

Default

It's been discussed several times and, IIRC, it's suggested as being too antiseptic for the yeast. Likely killing them or stressing them beyond benifit.

Olive Oil appears to have more merit but only with a couple relavent studies.

Shaking, Aquarium pumps or good ole fashion Oxygen have been proven tho'.

__________________
GilaMinumBeer is offline
 
Reply With Quote Quick reply to this message
Old 06-01-2009, 07:14 PM   #3
TexLaw
Here's Lookin' Atcha!
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
TexLaw's Avatar
Recipes 
 
Join Date: Sep 2007
Location: Houston, Texas
Posts: 3,695
Liked 24 Times on 23 Posts

Default

Shaking has yet to fail for me.


TL

__________________
Beer is good for anything from hot dogs to heartache.

Drinking Frog Brewery, est. 1993
TexLaw is offline
 
Reply With Quote Quick reply to this message
Old 06-02-2009, 08:07 PM   #4
Pangea
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2009
Location: Lafayette, LA
Posts: 325
Liked 4 Times on 4 Posts

Default

I will check wikipedia before spouting science
I will check wikipedia before spouting science
I will check wikipedia before spouting science
I will check wikipedia before spouting science
I will check wikipedia before spouting science

__________________

Last edited by Pangea; 06-03-2009 at 02:40 PM. Reason: I need to check wikipedia before speaking on science ever again!
Pangea is offline
 
Reply With Quote Quick reply to this message
Old 06-02-2009, 08:16 PM   #5
GNBrews
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2007
Posts: 661
Liked 8 Times on 6 Posts
Likes Given: 7

Default

Quote:
Originally Posted by Pangea View Post
Most solutions of H2O2 are available in 50% aqueous.
Where are you buying your peroxide? I haven't seen anything OTC above 30%.
__________________
GNBrews is offline
 
Reply With Quote Quick reply to this message
Old 06-02-2009, 08:51 PM   #6
beerkrump
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2009
Location: Triune, TN
Posts: 2,124
Liked 13 Times on 13 Posts

Default

Quote:
Originally Posted by Pangea View Post
Hydrogen peroxide is H2O2 - and will dissociate in water to 2 H+ ions and Oxygen gas (O2).
-1 for high school chemistry

Try 2 H2O2 --> 2 H2O + O2.

The power of hydrogen peroxide is not the acidity(which is weak), but the fact that it is one of the strongest oxidizing agents. Normal, drug store H2O2 is only around 3% and that is enough to bleach hair (see peroxide blonde). 50%, that stuff is corrosive and no one is going to sell it to individuals at that strength.

The biggest issue with adding H2O2 to wort would be the compounds that would result from the redux reaction. Sure you'll have some extra H2o and O2, but what else?

+1 for shaking.
__________________
beerkrump is offline
 
Reply With Quote Quick reply to this message
Old 06-02-2009, 09:20 PM   #7
IowaHarry
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2008
Location: Western Ia.
Posts: 249
Liked 2 Times on 2 Posts

Default

Quote:
Originally Posted by GNBrews View Post
Where are you buying your peroxide? I haven't seen anything OTC above 30%.
At work we were told to use up all the >30% peroxide as it has made the leap to the "watched substances" list by Homeland Security. Apparently if you want to use something stronger than 30% you must be a terrorist.

And yes, the peroxide would probably do mean and hurtful things to your yeast. We use it to keep critter populations down.
__________________
Bottled: Kolsch, belgian Wit, Belgian dubbel, Edworts Haus Pale Ale
Seconday: We don't need no stinking Secondary
Primary: IPA
IowaHarry is offline
 
Reply With Quote Quick reply to this message
Old 06-02-2009, 10:45 PM   #8
z987k
Feedback Score: 0 reviews
 
z987k's Avatar
Recipes 
 
Join Date: Feb 2007
Location: Anchorage
Posts: 3,545
Liked 22 Times on 20 Posts
Likes Given: 1

Default

hmmm, anyone want to figure out how much H2O2 yields enough O2 for properly oxygenated wort?

__________________
Beer Style Guidelines - Kaiser's Brewing Experiments - American Society of Brewing Chemists - Journal of the Institute of Brewing
z987k is offline
 
Reply With Quote Quick reply to this message
Old 06-02-2009, 10:56 PM   #9
flaminpi3
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2009
Location: Dallas, TX
Posts: 126
Liked 2 Times on 2 Posts

Default

Speaking of high school chemistry, I'm pretty sure hydrogen peroxide doesn't break down into O2 and H20 for sh*ts and giggles, it's going to need a catalyst and I don't think anything in beer qualifies. Plus, has anyone ever mouthwashed with H2O2, it tastes f**king disgusting. HOW IS THIS BEING DISCUSSED AS A POSSIBLITLY?!?!...sip...sip...okay, sorry about that.

Oh and then there's this:

Ingestion:
Large oral doses may cause irritation and blistering to the mouth, throat, and abdomen. May also cause abdominal pain, vomiting, and diarrhea.

__________________

“For art to exist, for any sort of aesthetic activity or perception to exist, a certain physiological precondition is indispensable: intoxication.” - Friedrich Nietzsche

flaminpi3 is offline
 
Reply With Quote Quick reply to this message
Old 06-02-2009, 11:13 PM   #10
jds
Feedback Score: 0 reviews
 
jds's Avatar
Recipes 
 
Join Date: Oct 2007
Location: Littleton, CO
Posts: 1,947
Liked 17 Times on 14 Posts

Default

Quote:
Originally Posted by z987k View Post
hmmm, anyone want to figure out how much H2O2 yields enough O2 for properly oxygenated wort?
OK. I'll bite.

Assumptions: 2H2O2 --> 2H2O + O2
Neglecting everything in the wort that isn't water, 5 gallons is roughly 19 liters.
8 PPM target value for oxygenation.
All oxygen released by H2O2 goes into solution (this probably isn't the case).

19 l water * 56 (mol/l) = 1064 moles of water.

1064 mol water * ( 8 mol O2 / 1,000,000 mol water) = 8.5E-3 moles O2 needed.
Since 2 mol H2O2 yields 1 mol O2, we'd need 17.02E-3 moles of H2O2

With a molecular weight of 34, you'd need 34 * 71.02E-3 = 0.578 grams, or about a half a gram of H2O2. Using a 3% solution from the drugstore would mean you'd need around 19.3 grams dilute H2O2. Doesn't seem like much, but that assumes 100% efficiency at getting the released O2 into solution.

3% H2O2 has a specific gravity similar to water, so we're talking about 20ml of dilute hydrogen peroxide.

Anybody want to give it a shot?
__________________
jds is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
What about using Hydrogen Peroxide to clean/sanitize... UdderJuice Equipment/Sanitation 12 02-12-2013 07:00 AM
Hydrogen peroxide in a pinch maple_shaft Equipment/Sanitation 21 05-07-2011 06:09 PM
Hydrogen peroxide use for CO2 production? ipscman Bottling/Kegging 3 05-03-2009 06:24 PM
Hydrogen Peroxide? brelic Equipment/Sanitation 12 10-04-2008 08:23 AM
Hydrogen Peroxide as a sanitizer? Bills Brew Equipment/Sanitation 3 01-02-2006 11:15 PM