[Terrapreta] Tree planting -- a bit more

[Edward Someus]

Thanx, interesting consideration. 
 
However, by making Life Cycle Analysis for all components one by one and the
complex material together, -- the issue turns to be more complex as for
material management issue not only the carbon but the heavy metals +
halogens + organic residuals are also considered as key players and impact
factors.
 
KEY CONCEPTS: 
No matter if you put carbon to soil for long term, if you pollute the
environment during the process than you put the problem from one of your
pocket to the other. Global and comprehensive view is needed. 
No heavy metals to soil, as by low pH they are rapidly (weeks/months)
mobilized 
No halogens to soil, as the may rapidly (weeks/months) be recombined with
organics 
Organic residuals - tars - are usually high impact toxic elements for short
term (some decades),  Tars killing most soil microbiological life first, but
after decades they slowly decompose and the new generation microbes slowly
start to digest it.  In this context 25 years is not even a mili-second in
the nature time scale. Same as for heavy oils: first extinction than life is
returning. Same as with heavy oils Exon Valdez ran aground in the Prince
William Sound, Alaska 1989, spilt 260 000 barrels of crude oil, the oil
spread by winds & currents covered 30 000 km2 of coastal water, now the life
is back after 18 years.

Tks 
   
 
 
 

Sincerely yours: Edward Someus (environmental engineer)
Terra Humana Clean Tech Ltd. (ISO 9001/ISO 14001)
3R Environmental Technologies Ltd. 
ADDRESS: H-1222 Budapest, Szechenyi 59, Hungary
TEL handy:  +(36-20) 201 7557
TEL / FAX:   +(36-1) 424 0224
TEL SKYPE phone via computer:  Edward Someus
3R TERRACARBON:   http://www.terrenum.net 
3R CLEANCOAL ENERGY: http://www.nvirocleantech.com 
 
-------Original Message-------
 
From: Duane Pendergast
Date: 2007.12.04. 16:19:25
To: 'lou gold';  'Edward Someus'
Cc: Terrapreta at bioenergylists.org
Subject: RE: [Terrapreta] Tree planting -- a bit more
 
            Thanks Edward and Lou,
 
I see my “simplistic thinking” sparked some relevant observations from you
both with respect to the use of “waste” biomaterial for terra preta. Let me
suggest that a need for several grades of char-charcoal might evolve in our
quest for a brave new carbon conscious world. For example;
 
1) Food grade – this one would be the basis for the building of terra preta
soil to be used for food production. Some clean “waste” material from farms
and food production plants would be the source of char for this purpose. It
would be produced close to the point of use to avoid excessive
transportation costs.
 
2) Forest grade – Forests will continue to be harvested – whether by clear
cut or selective techniques. Some of the “waste” material could contribute
to the building of terra preta forest soil. Such an approach could lead to
the establishment of enduring forest carbon sinks as the component
vegetation goes through its life cycle.
 
3) Landfill grade – Some biomaterial might become so contaminated with
harmful materials that it would not be suitable for the above purposes.
Housing materials might be in that category. It could still be used to
produce some energy and some char which could be simply buried as a carbon
sink taking some carbon dioxide from the atmosphere. Of course there is
potential for sorting and processing the waste stream from our cities to try
and make the most of uncontaminated biomaterials. Wouldn’t that approach be
better than currently proposed incentives to those who would earn carbon
dioxide reduction credits from the needless generation of landfill methane?
 
Many simplistic ideas will need to be integrated to establish workable
carbon dioxide control.
 
Duane
 
 
 
 
 
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