[Digestion] Digestion Digest, Vol 16, Issue 3

Vishwas Gokhlale vishwasgokhale860 at gmail.com
Mon Dec 5 04:16:02 PST 2011


Our Indian government has recently introduced a programme called BGFP.
Earlier the programme by the MNRE ( Ministry of new and renewable energy )
was entirely  based on the renewable energy aspect and financial assistance
was based on expenditure incurred on renewable energy portion. The
Bio-fertilizer aspect was totally excluded for the financial assistance. 

The financial analysis shows the biogas and fertilizer  contribute equally
to the return on investment. The revenue from the biogas portion is regular.
However for bio-fertilizer sale one has to wait for 2 sowing seasons in a
year. That introduces  a problem of storage as well maintaining the quality
during the  this period. Although bio=fertilizer revenue looks more
attractive it does not happen in practice. Is there some method of storage
and value addition to make this stream more attractive ?

Vishwas Gokhale
GIT  Associates
1034/2/B, Flat No 6,Annapurna Apts,
Model Colony,Pune 411016,India
+919822604274
+912025651405
http://www.gitassociates.com

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Subject: Digestion Digest, Vol 16, Issue 3

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Today's Topics:

   1. Re: Digestate comparison to liquid worm castings (Alexander Eaton)
   2. Digestate (Murali Krishna)


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Message: 1
Date: Fri, 2 Dec 2011 15:12:06 -0700
From: Alexander Eaton <alex at sistemabiobolsa.com>
To: For Discussion of Anaerobic Digestion
	<digestion at lists.bioenergylists.org>
Subject: Re: [Digestion] Digestate comparison to liquid worm castings
Message-ID:
	<CAFmBdUD-bY6vkyyRbC9FC0Y95CVqpf1j+3Xkh6CtYT+TywRruQ at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi Wayne,

We recently were given lab results that showed that our biol (digestate)
was a much better product than liquid worm castings in macro-nutrients,
micro-nutrients and in biological activity.  Regarding macro-nutrient (NPK)
comparison with inorganics, biol will generally have lower percentages, but
a much high percentage of the nutrients are in a form that is available for
plant up-take.  Another factor that allows us to have IMPROVED harvests
with biol over chemical fertilizers in the first year is that soil with
constant chemical fertilizer use us essentially sterile, without a healthy
biological activity that converts soil nutrients into forms that plants can
utilize (Dr. Karve of this list has argued on various occations that ALL
soils have all the nutrients necessary for healthy plant growth, and it is
just a matter of have the biological activity necessary to convert the
minerals to forms that plants can use).  When we add the biol, the bacteria
in the biol and the bacteria in the soil we activate begin to convert macro
and micro nutrients that have accumulated in the soil, so the plants get a
large boost.  We feel that NPK is a very dated way to look at fertilization
of soils, and biol has benefits that include: micro-nutrients, enzymes,
amino acids, active biological components, useful macro-nutrients, among
other things.  These days, the fertilizer benefits of small digesters is
the driving force behind our program, with the gas as interesting bonus,
whereas the program started with the reverse idea.

Best,

Alex

On Fri, Dec 2, 2011 at 12:46 PM, Wayne Zschech <
waynezschech at calvarychapel.com> wrote:

> G'day All!
>
> I know that the quality of the liquid digestate as a fertiliser depends on
> the type of feedstock ingredients. However, as a generalisation (or with
> specifics) how does our liquid digestate compare to liquid worm castings?
> Is the digestate even close to the 'potency' of the worm castings?  Also
> when comparing the standard NPK values of inorganic fertiliser is there a
> rule of thumb that allows digestate to 'compete' with them even though the
> NPK values are much higher in the inorganic fertiliser?  This will help me
> in talking to farmers when talk about the benefits of our product as
> instead of fresh manure or chemicals.
>
> Blessings,
> Wayne
>
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> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>
>
>


-- 
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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Message: 2
Date: Sat, 3 Dec 2011 09:08:52 +0530
From: Murali Krishna <bmkrishna6 at gmail.com>
To: Digestion at bioenergylists.org
Subject: [Digestion] Digestate
Message-ID:
	<CAPSO_1cazDryYASYuasf_YhTpQ9_gV14d+LZuEixnECA8Wg73g at mail.gmail.com>
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Good day Alex,

Undoubtedly the spent slurry is the best nutrient source to plants/crops,
provided that necessary care is taken, and it is free from pathogens and in
the available form.  "All soils have all the nutrients necessary for
healthy plant growth" holds good only when  the surface top  layer (12
inches) is with some flora fauna and the soil is  not overdrawn. Now a days
we witness this situation only in Forest Regions.  When an ideal living
conditions do exist even the small amount of macro and micro organisms
would multiply and even the undigested portion of the digestate will be
brought into available form by the microbes. To bring the hidden stored
reserves from the bottom layers of the soils (upto 20 feet depth) we need
again some species like earthworms, etc.   For all this to happen we need
some carbonaceous material and which is converted into humus by macro and
micro flora and fauna.  The humus is an essential link. Building soil
reserves is essential so that our future generations will have something to
eat .  If I am right all the magic is done in the top surface area of the
soil in and around the feeder roots (even transmutation).

When a human is sick we put him on drip it does not meant we will survive
on drip without having balanced food to build blood and muscle,  so is the
available form of nutrients.  The need of the hour is to conserve soils and
build reserves that is possible with some amount of carbonaceous materials
then and only  then as Dr. Karve had said microbes will take care
everything.  If any system is working anywhere without carbonaceous
material we can assume that there are still some reserves in the top soil
and some humus.

We have almost drawn out reserves and it is high time we build a  deposit
while drawing limited funds for day to day needs leaving behind some amount
of reserve every year. This is the way our forefathers gave us richest
soils!

Krishna

*
**
*
* **Never put water down the drain when there may be another use for it*
*Save the Environment*

*
*
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for more information about digestion, see
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