[Digestion] Bio Slurry

Mon May 6 13:52:15 CDT 2013

Dear Alex and All,

Thanks for the feedback. We will do the same. The inconsistent demand of fertilizer can be a problem, but is completely solved by irrigation in Kenya as rain is the only thing that stops people from planting all year long so large farms could be good market for us. For now, we need to see what biofertilizer can do. If we can prove that it adds value for commercial farmers we should be in good shape as the transport distances still won't be too far.

Best wishes,

Kyle
Founder and Director of Technology
Schutter Energy Ltd.
+254 703113383
www.takamotobiogas.com

On May 5, 2013, at 9:53 PM, Alexander Eaton wrote:

Kyle, 

We have found that slowly building a local market is a stronger alternative than thinking about larger transport distances or speciality items.  These can have a role, but ultimately having the slurry remain at a price that allows it to replace chemical fertilizers and be used in bulk locally is your best hope for using the value of the biofertilizer to drive the biogas market.  In Mexico, that is achieved through slowly increasing the hectares under cultivation with the "biol" and carefully documenting the results.  

As David Fulford has pointed out, there are nuances to the use of the biol, and some combinations or dosis, crop and soil types can actually reduce yields if the is H2S present.  However, we have really good results with direct application, and our average application rates are about 10k liters per HA over three or four dosis periods.  We are complimenting early applications with small amounts of urrea, which is really common in Mexico, but the overall chemical fertilizer reductions are still about 90%.  Given that the biol is produced all year round, it is important to take an "all of the above" approach: compost piles to receive excess biol, adding to worm castings (we have limited success with adding it to the worms), storage, and a wide variety of uses from trees to flowers to crops and forages.  

We have started a "Biol Guide" that we have created out of local experiences   I suggest you start doing the same, documenting results in both test plots and from the experiences of local farmers.  Always add the disclaimer that most biols, soils, and crop combinations will be relatively unique.  This is long term chance we are pushing, and will require patience, good documentation, promotion, and leadership.  

Cheers

Alex       

On Sun, May 5, 2013 at 7:37 AM, Anand Karve <adkarve at gmail.com> wrote:
The methanogenic archaea need oxygen just like other living beings, but having evolved under anaerobic conditions, they developed the trick of getting their oxygen from their substrate rather than from the atmosphere. Thus they convert nitrates and sulphates into ammonia and hydrogen sulphide, and acetic acid, a carbohydrate, into methane, a hydrocarbon. When the slurry is applied to the soil, the soil microbes oxidise the ammonia into nitrate. The energy released in this process is used by the microbes for their own metabolism.and the nitrates are used by the plants. 
Yours
A.D.Karve

On Wed, Apr 17, 2013 at 3:16 PM, PETER ALLISON <pm.allison at bigpond.com> wrote:
Re; Bio Slurry.
Thank goodness bio-gas chatter has now included bio-slurry as a legitimate by-product of the process.
I have always maintained bio-gas was but a bonus of the exercise rather than the focus.
Bio-slurry contains all the elements, nutrients, colloids, chemicals, hormones and more produced by plants minus the sustenance requirements of the animals fed upon this plant matter.
Introduction of the resultant manure into the bio-conversion process takes plant matter to its finest conclusion.. 
All the requirements of plants are contained within this matter outside of sunlight and CO2.
Plants are not concerned about being cannibalistic. They will consume their relatives and friends as long as they are in a form suited to absorption by plants.
They enjoy colloidal nutrient. There is plenty of this material in spent slurry. There is also plenty of material ideally suited to soil feeding and rehabilitation.
The simple solution to bio-slurry is extraction of the colloids for foliar feeding and then pelletize the remainder for broadcasting operations.
The pelletized material can be formulated to correct deficiencies in either soil or crop or both. 
Peter Allison

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-- 
***
Dr. A.D. Karve
Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)

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-- 
Alexander Eaton
Sistema Biobolsa
IRRI-Mexico
RedBioLAC

Mex cel: (55) 11522786
US cel: 970 275 4505

alex at irrimexico.org
alex at sistemabiobolsa.com

sistemabiobolsa.com
www.irrimexico.org
www.redbiolac.org
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