Aquaponics Digest - Mon 12/20/99
Message 1: speraneo system
from Jacky Foo
Message 2: Re: Speraneo system
from RalphMcl
Message 3: methane digester data needed
from Hydro/Aquatic Tech
Message 4: Monsanto "Genetic Engineering" may sell out?
from Dave Miller
Message 5: Re: methane digester data needed
from dreadlox@cwjamaica.com (michael kent barnett)
Message 6: Re: methane digester data needed
from "F. Marc de Piolenc"
Message 7: Re: methane digester data needed
from Hydro/Aquatic Tech
Message 8: MFA Speadsheet Excel
from Bill
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Subject: speraneo system
From: Jacky Foo
Date: Mon, 20 Dec 1999 08:29:31 +0100
Raul Vergueiro Martins
>Have you considered the high potential of anaerobic bio-digestors?
>You can get methane, and this means heat.
>Besides this, you have a high grade nutrient solution, and a nutrient
slurry to
>use in soils.
this could be an option for an aquaponics greenhouse system. An example of
such a system is at Stensund (Sweden) where an anaerobic filter is used.
Shyloah asked:
>Since so much of this is based on the Materials Flow Analysis - Is there a
>link that says what's involved in this so we can see how hard this is to
>accomplish.
material flow analysis is the quantatitive analysis of the flow of all
materials and nutrients (in volumes, weights, concentrations) that pass
through an integrated system of processes or a chain of processes. It is
related to process accounting, environmental accounting, life cycle
analysis, i.e. knowing what goes in and goes out for wastes and products.
It is also business since you need to know what goes out, i.e. as saleable
products and in the wastes. If much of what goes in comes out as wastes,
you are loosing money there. Material flow analysis can then help you make
positive changes, either to improve the process (cleaner production) or use
the wastes to generate value added products (integrated bio-systems).
regards
jacky
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Subject: Re: Speraneo system
From: RalphMcl
Date: Mon, 20 Dec 1999 15:21:24 EST
Would only like to say, why continue to look a gift horse in the mouth? The
system has been proven to work and why not accept it at face value and grow
instead of picking everything apart. This is one reason the the U.S. is so
far behind in aquaponics. The systems have been proven for over 20 years but
instead of growing we seem to want to question the system. Look around, the
system has been in use since 1979.
Come on folk lets be more responsible and take the info and run with it.
Ralph
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Subject: methane digester data needed
From: Hydro/Aquatic Tech
Date: Mon, 20 Dec 1999 13:37:17 -0500
Hi Group!
Does anyone have any data as far as using fish waste slurry
in a methane digester. I know that digesters work well for
hog and cattle wastes with high organics here in the States,
and that digesters are VERY widely used in China, but have
no data on using fish effluent to generate methane.
Need data for two 350,000 gallon systems that I am
designing/installing for customers.
Thanks,
Scott Jones
Hydro/Aquatic Technologies
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Subject: Monsanto "Genetic Engineering" may sell out?
From: Dave Miller
Date: Mon, 20 Dec 1999 19:16:22 -0500
As Monsanto announces a merger, what to do with their division
responsible for genetic engineering of soy, corn, rape(canola) and other
seeds is up for speculation. This upcoming year might be an opportune
time to lay blow to a company weakened by public pressure and enormous
debt on a division that is not making enough profit.
Date: Mon, 20 Dec 1999 14:53:17 -0800
From: Charles Benbrook
Subject: Monsanto Merger
I am sure everyone has heard the news that Monsanto and Pharmacia-Upjohn
are going to merge. I have had several press calls re this already;
people are wondering what this means for ag biotechnology and Monsanto's
agchemical and seed division. A few observations --
* Monsanto announced an earlier deal with American Home Products that
subsequently fell apart; this deal may also not reach fruition, for a
variety of reasons.
* Media coverage obviously focuses on the pharmaceutical side of the
merger, which is why it happened. Pharmacia-Upjohn has little or no
interest in the ag division.
* The merger does not to solve the problem of what Monsanto will do
with its ag chemical and seed division, nor its debt load; the
announcement that it will be spun off as a separate company,
supported via a new IPO (Initial Public Offering) is a "placeholder"
announcement. It is almost certainly not going to happen that way,
but it is all Pharmacia-Upjohn and Monsanto can say at this point,
since they have to complete their merger before they can talk about
another deal.
* The merger does nothing to address the underlying weaknesses of
Monsanto's ag-chemical and seed division -- it can not generate
sufficient income to service debt; it has far too narrow a product
line to support a company of its size and service its debt; said
another way, Roundup sales account for way too much of sales and
profits and are not sustainable because Roundup is going off-patent
and is soon to become a generic product with narrower profit margins;
and, Monsanto lacks the product depth and marketing infrastructure
to compete with mega-companies now forming (Aventis; Syngenta;
Dupont-Pioneer).
In all likelihood, Monsanto's ag chemical-seed division will eventually
be bought by Bayer, BASF, Dow, or possibly Sumitomo or another Japanese
company that decides to get into the agricultural inputs market in a big
way. Another of these companies -- one that passes on Monsanto -- will
probably merge with American Cyanamid (owned by American Home Products,
and for sale).
It is also possible that Monsanto's ag chemical and seed division will
be broken into a couple of pieces. Also, do not be surprised if the
Delta Pine merger collapses.
Sale to another well established company is most likely because only
through a merger with another major player in the market can a new
company overcome some of the division's inherent problems -- too narrow
a product line, lack of marketing infrastructure. In general, the
longer the time for a deal to take shape, the greater the likely
discount, since the markets are catching on to the structural problems
plaguing Monsanto's ag chemical and seed division.
As this next round of mergers/acquisitions/divestures unfolds, it will
be important to watch out for the impact on competition in major
pesticide markets as well as the relative emphasis placed on traditional
pesticides, biopesticides and softer approaches, and transgenic
solutions. More on these fronts later.
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Subject: Re: methane digester data needed
From: dreadlox@cwjamaica.com (michael kent barnett)
Date: Fri, 17 Dec 1999 18:57:19 +0000
Will post the foll to the Digestion List on CREST!!
Much success,
MIke..(Jamaica)
Hydro/Aquatic Tech wrote:
>
> Hi Group!
>
> Does anyone have any data as far as using fish waste slurry
> in a methane digester.
> Hydro/Aquatic Technologies
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Subject: Re: methane digester data needed
From: "F. Marc de Piolenc"
Date: Tue, 21 Dec 1999 11:49:25 +0800
The critical parameter in anaerobic digestion seems to be
carbon-nitrogen ratio, but I can't find any data on that ratio for fish
waste. Before I try looking further, I want to make sure I know what you
mean by "fish waste" - is this fish excreta or cannery waste?
Marc de Piolenc
Hydro/Aquatic Tech wrote:
> Does anyone have any data as far as using fish waste slurry
> in a methane digester.
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Subject: Re: methane digester data needed
From: Hydro/Aquatic Tech
Date: Mon, 20 Dec 1999 22:58:32 -0500
Thanks Marc,
Just good ol' fish excreta, with a little uneaten food
thrown in.
Scott Jones
H/A Tech
"F. Marc de Piolenc" wrote:
>
> The critical parameter in anaerobic digestion seems to be
> carbon-nitrogen ratio, but I can't find any data on that ratio for fish
> waste. Before I try looking further, I want to make sure I know what you
> mean by "fish waste" - is this fish excreta or cannery waste?
>
> Marc de Piolenc
>
> Hydro/Aquatic Tech wrote:
>
> > Does anyone have any data as far as using fish waste slurry
> > in a methane digester.
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Subject: MFA Speadsheet Excel
From: Bill
Date: 20 Dec 99 20:37:22 PST
>Since so much of this is based on the Materials Flow Analysis - Is there=
a
link that says what's involved in this so we can see how hard this is to =
accomplish.
Lee
I'm still studying the aquaponics concept between other projects
before 'diving in.' But as a wastewater engineer, allow me to suggest a =
cheap
tool for MFA, Micrsoft Excel, or similar spreadsheet.
If this seems difficult to concieve, it is a simple bank balance of input=
s and
concentrations (percentages and constants) for output. Very little
intermediate spreadsheet ability is required, much less advanced, to be
effective. Email me if you reqire help. Great for "what ifs" too.
And if you finf MFA links (as I'm too buzy with a list I recently was tos=
sed
to manage & had no maintenance for 9 months) I would be interested.
Bill
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