Coldbreak Brewing Giveaway - Open to All!

Home Brew Forums > Home Brewing Beer > Brew Science > Catalytic Carbon
Reply
 
Thread Tools
Old 05-07-2013, 08:03 PM   #1
Wynne-R
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Texas
Posts: 945
Liked 111 Times on 72 Posts
Likes Given: 92

Default Catalytic Carbon

Quote:
Activated carbon does not adsorb chloramines but rather removes them through its ability to act as a catalyst for the chemical breakdown of chloramines to innocuous chlorides in water. This catalytic reaction involves the formation of a carbon oxide intermediate (CO*). This reaction is as follows:

NH2Cl + H2O + C* = NH3 + Cl- + H+ + CO*

2NH2Cl + CO*= N2 + 2Cl- + 2H+ + H2O + C*
http://www.wqa.org/pdf/techbulletins/tb-chloramine.pdf

Did yíall know this? Really? Nobody told me.

I tripped over this trying to find out what Ďcatalytic carboní is. It turns out theyíre all catalytic itís just that some are more catalytic than others with regard to chloramine.


Wynne-R is offline
 
Reply With Quote
Old 05-07-2013, 08:27 PM   #2
ajdelange
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: McLean/Ogden, Virginia/Quebec
Posts: 7,592
Liked 994 Times on 790 Posts
Likes Given: 28

Default

Yes, see http://wetnewf.org/pdfs/Brewing_arti...T_Chlorine.pdf pp 21-22.

I'm not sure I'd call it catalytic though as the carbon is actually oxidized by that first chloramine molecule and then subsequently reduced by the second 2. I guess you could call that catalysis.
ajdelange is offline
 
Reply With Quote
Old 05-07-2013, 09:34 PM   #3
Wynne-R
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Texas
Posts: 945
Liked 111 Times on 72 Posts
Likes Given: 92

Default

Yeah, Iíve read that one, several times. I have a copy on my files. Good stuff.

It seems that even that little Britta pitcher filter worked pretty well. Iím guessing a good carbon block would be better. How much chloramine is too much?

I have been using a tiny amount of Campden in my filtered water. A pinch would be enough, wouldnít it? Something like 20 mg? I really canít tell the difference.

I donít know why carbon wouldnít be a catalyst. Itís in the reaction, but not in the final product.
Wynne-R is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
North Carolina Carbon Snake matt415 For Sale 0 03-29-2013 01:36 AM
How to carbon filter akurth7 Mead Forum 4 08-16-2011 12:02 PM
Carbon Fittings OK swanwick Equipment/Sanitation 3 04-26-2011 01:41 AM
Where's the carbon coming from? Fingers Recipes/Ingredients 1 05-02-2009 01:14 AM
Getting to much carbon Beertk General Techniques 3 02-06-2008 10:00 PM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS