Denitrators

No, it doesn't. You are basically arguing that you start out with NO3 and
H2O
and it goes

No I am not arguing that.




2NO3 & 2H2O ---- 2NO2 & 2H2 ---- 2N01 & 2H2 ---- N2 & 2H2O.

The water molecules are never broken up.

Very good! When did I write water molecules were broken up?

They just pass through when the system is functioning properly.

Still wrong. Water is produced here. 2NO3 + 12H+ ---- N2 + 6H2O

This is an enzymatic reaction involving nitrate reductase. The process is
called DENITRIFICATION. O2 is NOT produced!

Read for yourself:
http://en.wikipedia.org/wiki/Denitrification
http://www.reefscapes.net/articles/a...ogencycle.html

When water molecules do get stripped of their oxygen, the hydrogen usually
combines with sulfur to produce hydrogen sulphide.

What? When did I mention water molecules getting stripped of oxygens?

George Patterson
Coffee is only a way of stealing time that should by rights belong to
your slightly older self.

Stoutman wrote:

Very good! When did I write water molecules were broken up?

You stated that hydrogen combines with oxygen from the NO3 to produce H2O. When
asked where the hydrogen comes from, you stated that the "enzymes" produce it
from water. The only way they could do that is to strip oxygten atoms off the
water molecules.

Still wrong. Water is produced here.

Not possible.

George Patterson
Coffee is only a way of stealing time that should by rights belong to
your slightly older self.

Very good! When did I write water molecules were broken up?

You stated that hydrogen combines with oxygen from the NO3 to produce H2O.
When asked where the hydrogen comes from, you stated that the "enzymes"
produce it from water.

No, what I wrote was that the H+ come from general acids located within the
enzymes active site. Do you know what a general acid is in this context?
If not I will explain it to you.

The only way they could do that is to strip oxygten atoms off the water
molecules.

Wrong. The H+ source comes from protonated amino acid residues (general
acids) located in the enzymes active site.

This might help: H+ doesn't really exist in an aqueous environment, it
exists as H3O+. This is the protonated form of water.
There are other things (molecules) in nature that can be protonated, not
just water.

For example some amino acids have basic amine side chains that will be
protonated at any given time. They can and do serve as the source of H+ in
the active site of an enzyme.

I don't expect everyone to understand this stuff, but ...


Still wrong. Water is produced here.

Not possible.

Uggg.




George Patterson
Coffee is only a way of stealing time that should by rights belong to
your slightly older self.