[Digestion] Nitrogen Emissions from Biogas

[Tom Miles]

Thanks Ian

Tom 

-----Original Message-----
From: Ian [mailto:bywateri at woosh.co.nz] 
Sent: Thursday, March 08, 2007 4:55 PM
To: Paul Harris; Tom Miles
Cc: The Digestion Discussion List
Subject: Re: [Digestion] Nitrogen Emissions from Biogas


On 9/03/2007, at 11:44 AM, Paul Harris wrote:

> If biogas is 60% methane and about 40% CO2, with traces of water, 
> ammonia, H2S etc there will not be much N20. I understand (from my 
> simple engineering knowledge, which does not really extend to
> combustion!) that NOX (N2O?) emissions are a result of combustion

Nitrous oxide is emitted by cow manure on pasture.
We are undertaking trials to determine the N20 from raw dairy effluent as
compared to diary effluent digestate after AD.

_________________
Ian Bywater
Director, Natural Systems Limited
PO Box 1551
Christchurch 8140
New Zealand