[Terrapreta] Overview on biochar production methods

[ENVIPOWER]

Tom,
That is actually one of the main issues. We have lots of ideas. However we
will have to concentrate on a smaller part of "the cake". 
One of the major issues is the best treatment of biomass into TP char. Some
reports suggest that it is vital with volatiles/oils in the coal, others
that it is the pore structure. We can do a lot of different setups in our
gasification step. It more or less can run from low temperatures created by
the high O2 in the fuels up to high temperature starved air combustion. Off
course the capacity differs in different modes. 
Still the main issue for us is the fertilizer issue and how the fertilizer
parts N, P, K (potassium) will be available in the char. The TP effect is an
add-on that we expect a lot from.
Best regards/Med venlig hilse
ENVIPOWER AS

Nils Peter Astrupgaard
Snerlevej 1 DK-2800 Kgs. Lyngby
+45 4061 5600
npa at envipower.dk www.envipower.dk 




_____________________________________________
From: Tom Miles [mailto:tmiles at trmiles.com] 
Sent: 16. august 2007 18:29
To: 'ENVIPOWER'; terrapreta at bioenergylists.org
Subject: RE: [Terrapreta] Overview on biochar production methods

Nils,
We understand that there is Environmental political pressure in Europe to
make more efficient use of fertilizer, like preventing leaching nitrates
into the groundwater, etc. Are you also looking at biochar as a means of
doing this?
Thanks
Tom 


		_____________________________________________
		From: terrapreta-bounces at bioenergylists.org
[mailto:terrapreta-bounces at bioenergylists.org] On Behalf Of ENVIPOWER
		Sent: Thursday, August 16, 2007 1:43 AM
		To: 'Edward Someus'; terrapreta at bioenergylists.org;
Shengar at aol.com
		Subject: Re: [Terrapreta] Overview on biochar production
methods


		- and why not add us to the list. We already produced the
low temperature char in 1993 in our gasification stage in order to hold back
alkali metals (= fertilizer) from straw. We just didn't know what
agriculture would say to such a carbon rich product even though there
already was a discussion on C depletion of the Danish farm land.
		After the recent establishment of ENVIPOWER we learned about
TP and that was the answer to our question. We have just got a rather small
amount of money allocated to smaller agricultural experiments carried out by
"Faculty of Agricultural Sciences" http://www.agrsci.org/content/view/full/2

		We will off course report to the list of our findings.
		Best regards/Med venlig hilsen
		ENVIPOWER AS
		Nils Peter Astrupgaard
		Snerlevej 1 DK-2800 Kgs. Lyngby
		+45 4061 5600
		npa at envipower.dk www.envipower.dk  
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