[Terrapreta] http://www.pustaka-deptan.go.id/publication/as072065.pdf

[rukurt at westnet.com.au]

Somebody, on another list, did some ,back of the envelope calculations, 
and suggested that a foot of fine charcoal powder per square foot of 
landsurface, incorporated into the soil, worldwide, would solve the CO2 
problem. Truth or BS?? Who knows? Puts things in perspective though.

Kurt

Sean K. Barry wrote:
> Hi All,
>
> Rhisiart and Tharkara speak to a interesting point on source biomass for charcoal, I think.  Tharkara is wishing to make charcoal from rice husk, because he has a great abundance of it available.  Rhisiart speaks to local sources in his most recent post.
>
> ...
>
> 1) That it is made with cheap, simple, techniques that anyone can learn and apply at home, on any patch of ground to which they can have access.
>
>
> 2) That it produces almost miraculously rich, long-persisting fertility in the soil, even starting from pretty barren substrates.
>
>
> 3) And that it sequesters very substantial amounts of  atmospheric carbon, in inert form, into the soil for - as far as anyone can discover - thousands of years, at least.
>
>
> Long-term, massive atmospheric carbon sequestration AND spectacular soil fertility enhancement are clearly both eminently practical, using nothing more than simple 'peasant' techniques and equipment, whenever we start copying the ancient pioneers of the Terra Preta black soil of the Amazon in our gardening and farming. Potentially, hundreds of millions of practical, small-scale food-growers everywhere could be doing this any time that we want to start.
>
> ...
>
> It seems to me that simple local methods and local raw material biomass sources are an important practical reality, if putting charcoal into the soil is a goal.  The qualities of a soil, once amended with charcoal, may be changed and improved upon with further amendments of natural or industrial fertilizer, compost, microbial inoculants, or even just time to "stew".  The greater value of charcoal in soil today, in 2007, is its potential to remove carbon from the atmosphere.
>
> The world average temperature is increasing exponentially due to human activity burning fossil fuels, which now releases 6 gigatons of CARBON in the form of CO2 annually and increases the global warming blanket by 6 gigatons of CARBON every year.  With third world expansion in the use of fossil fuels an glbal population expansion, this 6 gigaton number is growing fast.  The whole world needs to do something fast too, and with a big thrust towards going carbon negative activity.
>
> I want to make this very important point yet again ...
>
>   Whether "Terra Preta" can actually improve soil quality or not, it can very effectively sequester carbon from the atmosphere.
> So, as long as the charcoal made and put into agricultural soil does not poison the soil and make it unable to grow crops, then I think it can be used to attempt to make "Terra Preta".  I think putting any charcoal into any non-agricultural soils is just plain obviously a good carbon sequestration practice.  We can call it "UN-MINING" of carbon and it really ought to receive carbon credits in a world-wide carbon trading market.
>
> Regards,
>
> Sean K. Barry
> Principal Engineer/Owner
> Troposphere Energy, LLC
> 11170 142nd St. N.
> Stillwater, MN 55082
> (651) 351-0711 (Home/Fax)
> (651) 285-0904 (Cell)
> sean.barry at juno.com<mailto:sean.barry at juno.com>
>   ----- Original Message ----- 
>   From: thomas.beer at clorox.com<mailto:thomas.beer at clorox.com> 
>   To: Ron Larson<mailto:rongretlarson at comcast.net> 
>   Cc: terrapreta-bounces at bioenergylists.org<mailto:terrapreta-bounces at bioenergylists.org> ; terrapreta at bioenergylists.org<mailto:terrapreta at bioenergylists.org> ; tharaka pilapitiya<mailto:tharaka.pilapitiya at gmail.com> 
>   Sent: Tuesday, March 27, 2007 11:01 AM
>   Subject: Re: [Terrapreta]http://www.pustaka-deptan.go.id/publication/as072065.pdf
>
>
>
>   As a guy that has worked with charcoal for many years in Kingsford, I can tell you that different raw materials AND different operating conditions give different characteristics in chars. Hardwood is different than softwood, and even different species (oak, poplar, mesquite, hickory, pine, ash, fir...etc) have different characteristics. We have done work with rice hulls in the past and the characteristics are very different from other chars made from different types of biomass, but this is to be expected. Different biomasses and different operating conditions make different chars. So, it seems that we should be characterizing the properties that we want from the finished char, then working backwards to specify the operating conditions and the species (or mixture of species) that give the characteristics (in the finished char) that you want. 
>
>   It seems that we should start by defining what are the desired finished characteristics of the chars, and put some science to the advocacy. Char is not magic, it is produced like any other chemical reaction... with heat and time and pressure and moisture and reactants. Char can be produced to whatever characteristics that are appropriate, we just have to decide what is the target, then do some science around the effects of the characteristics on crop yields. 
>
>   Thomas Beer
>   Manufacturing Technology
>   Clorox Services Company
>   3900 Kennesaw 75 Parkway, Suite 100
>   Kennesaw, GA   30144
>   770-426-2419
>   770-426-2428- FAX
>   770-364-1079- Cell 
>
>
>         "Ron Larson" <rongretlarson at comcast.net> 
>         Sent by: terrapreta-bounces at bioenergylists.org 
>         03/27/2007 11:44 AM 
>        To "tharaka pilapitiya" <tharaka.pilapitiya at gmail.com>, <terrapreta at bioenergylists.org>  
>               cc  
>               Subject Re: [Terrapreta]        http://www.pustaka-deptan.go.id/publication/as072065.pdf 
>
>               
>
>        
>
>
>
>   Tharaka: 
>       It was interesting to read the article you provided.  Thanks.  However, I think we still need more proof that rice hull charcoal is better than other types of charcoal - as only one type of charcoal was reported in this article.  I hope you can convince these researchers or others to try various types of charcoal. 
>     
>       I would be interested in hearing from anyone on whether they believe all the following comments on pages 2 and 3 by the article's authors ring true relative to charcoal advantages re rooting (and an extension to non-rooting situations).  Or are there other different explanations? 
>     
>         The higher number of visible roots and longer roots 
>   of the cuttings grown on carbonized rice husk may be 
>
>   attributed with its better water holding capacity and 
>
>   drainage. Under such favorable condition, the plant 
>
>   was provided sufficient air and oxygen for cell respiration 
>
>   during the rooting process (Frenck and Kim 
>
>   1995). The moisture in smaller pores served not only 
>
>   for metabolic activities but also provided sufficient 
>
>   humidity to avoid excessive transpiration (Karlsen 
>
>   1997) and destructive temperature fluctuation that 
>
>   may happen in the rhizosphere (Klapwijk 1987). 
>
>        Aside from water holding capacity and drainage, the 
>
>   better root initiation and formation seemed to have 
>
>   relation with darker environment provided by carbonized 
>
>   rice husk. Compared to other treatment media, 
>
>   black color of carbonized rice husk may contribute to 
>
>   darker rhizosphere environment. In this situation, the 
>
>   root promoter (e.g. auxin) may be translocated and 
>
>   accumulated at the basal part of cuttings where root 
>
>   initials appear and these induce faster cell division 
>
>   and differentiation for root formation (Moe 1988). 
>
>    
>   ----- Original Message ----- 
>   From: tharaka pilapitiya<mailto:tharaka.pilapitiya at gmail.com> 
>   To: terrapreta at bioenergylists.org<mailto:terrapreta at bioenergylists.org> 
>   Sent: Monday, March 26, 2007 11:06 PM 
>   Subject: [Terrapreta]http://www.pustaka-deptan.go.id/publication/as072065.pdf 
>
>   Hi SKB, 
>     
>   Rice husk the EVER BEST charcoal, pls reffer the abstract. 
>     
>   http://www.pustaka-deptan.go.id/publication/as072065.pdf<http://www.pustaka-deptan.go.id/publication/as072065.pdf> 
>
>    
>
>
>
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