[Digestion] Digestion Digest, Vol 34, Issue 6
Edward Silalahi (Medan)
Edward_Silalahi at asianagri.com
Fri Jun 21 03:32:18 CDT 2013
Dear All,
Could you help me about these issues:
1. How to calculate from COD to Bio gas (the conversion)
2. How the bacteria life span,
3. How the bacteria can convert COD to bio gas and others components?
Best Regards ++
Edward Silalahi
Dy Head Mill and Engineering
Asian Agri Group
UniPlaza Building 6th floor East Tower
MT Hariyono street no 1A Medan 20231
Telp:+6261-4532155
Email:Edward_Silalahi at asianagri.com
Website:www.asianagri.com
-----Original Message-----
From: Digestion [mailto:digestion-bounces at lists.bioenergylists.org] On
Behalf Of digestion-request at lists.bioenergylists.org
Sent: Thursday, June 20, 2013 1:00 AM
To: digestion at lists.bioenergylists.org
Subject: Digestion Digest, Vol 34, Issue 6
Send Digestion mailing list submissions to
digestion at lists.bioenergylists.org
To subscribe or unsubscribe via the World Wide Web, visit
http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioener
gylists.org
or, via email, send a message with subject or body 'help' to
digestion-request at lists.bioenergylists.org
You can reach the person managing the list at
digestion-owner at lists.bioenergylists.org
When replying, please edit your Subject line so it is more specific
than "Re: Contents of Digestion digest..."
Today's Topics:
1. Re: Digester Selection (Paul Harris)
2. Digester Selection (Prabhu Govindarajan)
3. Re: Digester Selection (Paul Harris)
----------------------------------------------------------------------
Message: 1
Date: Wed, 19 Jun 2013 09:47:23 +0930
From: Paul Harris <paul.harris at adelaide.edu.au>
To: For Discussion of Anaerobic Digestion
<digestion at lists.bioenergylists.org>
Subject: Re: [Digestion] Digester Selection
Message-ID: <51C0F893.3050801 at adelaide.edu.au>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
G'day Prabhu,
One consideration in the selection is the technical expertise available
and the operator time available.
If there is a low level of expertise and little skilled labour a simple
digester operating on a longer retention time will be more robust, but
if there is a skilled labour force available you may decide to go for a
high rate design (which will require more operator time), but make sure
you can get technical advice about the design easily.
In any case I would suggest setting up a small trial digester using your
substrate to gain some experience of the likely design - you can get
some ideas from http://biogas.wikispaces.com/.
Happy digesting,
HOOROO
On 18/06/2013 3:28 PM, Prabhu Govindarajan wrote:
> Hi
> I am from a south Indian State of India, TamilNadu.We want to build
> a Digester for poultry manure (2-5) tons/week What would be nice
> approach for the AD
>
> 1.CST 3 Stage Plug Flow - CST IISC
> 2.Nisarguna - BARC Reactor -
> http://www.barc.gov.in/akruti-tp/atp_nisar.html
> 3.CSTR
> 4.U Shaped mixed plug flow - Some US Dairy Farms
>
> Can somebody help us with consultancy as well ?
>
> Thanks
>
> Prabhu.G
>
>
> _______________________________________________
> Digestion mailing list
>
> to Send a Message to the list, use the email address
> Digestion at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioener
gylists.org
>
> for more information about digestion, see
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylist
s.org/attachments/20130619/1cf7c33a/attachment-0001.html>
------------------------------
Message: 2
Date: Wed, 19 Jun 2013 11:12:59 +0530
From: Prabhu Govindarajan <prabhu.govvindarajan at gmail.com>
To: digestion at lists.bioenergylists.org
Subject: [Digestion] Digester Selection
Message-ID:
<CAGQutcAXcpP0JSChdC7SONOnHp2mvEMZmQ=+w6SrHGzBY82rNg at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Hi
Thanks for the pointers.The question i had in my mind when i asked this
was this
1.Does AD design affect the manure produced,H2S Content and ammonia
inhibition?
2.How does it affect the operational and process maintenance ?
3.As broiler manure supposed to have lot of heavy metals and steroids
should special care be taken .
4.Can some kind of co-digestion solve it ?
Thanks
Prabhu.G
On Tue, Jun 18, 2013 at 11:30 PM, <
digestion-request at lists.bioenergylists.org> wrote:
> Send Digestion mailing list submissions to
> digestion at lists.bioenergylists.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
>
>
http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioener
gylists.org
>
> or, via email, send a message with subject or body 'help' to
> digestion-request at lists.bioenergylists.org
>
> You can reach the person managing the list at
> digestion-owner at lists.bioenergylists.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Digestion digest..."
>
>
> Today's Topics:
>
> 1. Digester Selection (Prabhu Govindarajan)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 18 Jun 2013 11:28:33 +0530
> From: Prabhu Govindarajan <prabhu.govvindarajan at gmail.com>
> To: digestion at lists.bioenergylists.org
> Subject: [Digestion] Digester Selection
> Message-ID:
> <CAGQutcAU2zjUdJSr09j=
> 4itsRd6Pe-gxs17Du6m34xzdj5oePQ at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi
> I am from a south Indian State of India, TamilNadu.We want to build
a
> Digester for poultry manure (2-5) tons/week What would be nice
approach for
> the AD
>
> 1.CST 3 Stage Plug Flow - CST IISC
> 2.Nisarguna - BARC Reactor -
> http://www.barc.gov.in/akruti-tp/atp_nisar.html
> 3.CSTR
> 4.U Shaped mixed plug flow - Some US Dairy Farms
>
> Can somebody help us with consultancy as well ?
>
> Thanks
>
> Prabhu.G
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
>
http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists
.org/attachments/20130618/2a7b00d4/attachment-0001.html
> >
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> Digestion mailing list
>
> to Send a Message to the list, use the email address
> Digestion at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
>
http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioener
gylists.org
>
> for more information about digestion, see
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>
>
>
> ------------------------------
>
> End of Digestion Digest, Vol 34, Issue 5
> ****************************************
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylist
s.org/attachments/20130619/d2136c33/attachment-0001.html>
------------------------------
Message: 3
Date: Wed, 19 Jun 2013 15:47:24 +0930
From: Paul Harris <paul.harris at adelaide.edu.au>
To: digestion at lists.bioenergylists.org
Subject: Re: [Digestion] Digester Selection
Message-ID: <51C14CF4.1050209 at adelaide.edu.au>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
G'day Again,
1. In my simple engineers approach "what goes in MUST come out
(sometime!)" - this means that nearly all the inputs appear in the
sludge, as only relatively small amounts of carbon, hydrogen and oxygen
appear in the gas stream (with traces of nitrogen, sulphur etc.), but
some grit may only be emptied in maintenance periods. You will only get
H2S with high sulphur feeds (and possibly short retention times) and
microbes can acclimate to ammonia given time (build up the feed rate
slowly!) - pH is also important. As poultry do not have methanogens in
their gut/crop/whatever you will have to start with cow manure or some
other innoculum and change gradually to poultry manure - less problems
if you can do co-feed other materials.
2. As mentioned in my other e-mail "high rate" digesters (tend to be
more complex) require more monitoring (can be automatic, but you do
still need a human or two!) and operator skill than simpler low rate
digesters.
3. You would have to watch heavy metals when you spread sludge and make
sure steroids don't yield "super-bugs". Heavy metals can cause
inhibition and I am not sure about steroid effects (I was joking about
superbugs!).
4. Yes, as mentioned above co-digestion may solve (or help with) some of
the problems.
Hope this helps,
HOOROO
On 19/06/2013 3:12 PM, Prabhu Govindarajan wrote:
>
> Hi
>
> Thanks for the pointers.The question i had in my mind when i asked
> this was this
> 1.Does AD design affect the manure produced,H2S Content and ammonia
> inhibition?
> 2.How does it affect the operational and process maintenance ?
> 3.As broiler manure supposed to have lot of heavy metals and steroids
> should special care be taken .
> 4.Can some kind of co-digestion solve it ?
>
> Thanks
>
> Prabhu.G
>
>
> On Tue, Jun 18, 2013 at 11:30 PM,
> <digestion-request at lists.bioenergylists.org
> <mailto:digestion-request at lists.bioenergylists.org>> wrote:
>
> Send Digestion mailing list submissions to
> digestion at lists.bioenergylists.org
> <mailto:digestion at lists.bioenergylists.org>
>
> To subscribe or unsubscribe via the World Wide Web, visit
>
http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioener
gylists.org
>
> or, via email, send a message with subject or body 'help' to
> digestion-request at lists.bioenergylists.org
> <mailto:digestion-request at lists.bioenergylists.org>
>
> You can reach the person managing the list at
> digestion-owner at lists.bioenergylists.org
> <mailto:digestion-owner at lists.bioenergylists.org>
>
> When replying, please edit your Subject line so it is more
specific
> than "Re: Contents of Digestion digest..."
>
>
> Today's Topics:
>
> 1. Digester Selection (Prabhu Govindarajan)
>
>
>
----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 18 Jun 2013 11:28:33 +0530
> From: Prabhu Govindarajan <prabhu.govvindarajan at gmail.com
> <mailto:prabhu.govvindarajan at gmail.com>>
> To: digestion at lists.bioenergylists.org
> <mailto:digestion at lists.bioenergylists.org>
> Subject: [Digestion] Digester Selection
> Message-ID:
>
>
<CAGQutcAU2zjUdJSr09j=4itsRd6Pe-gxs17Du6m34xzdj5oePQ at mail.gmail.com
<mailto:4itsRd6Pe-gxs17Du6m34xzdj5oePQ at mail.gmail.com>>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi
> I am from a south Indian State of India, TamilNadu.We want to
> build a
> Digester for poultry manure (2-5) tons/week What would be nice
> approach for
> the AD
>
> 1.CST 3 Stage Plug Flow - CST IISC
> 2.Nisarguna - BARC Reactor -
> http://www.barc.gov.in/akruti-tp/atp_nisar.html
> 3.CSTR
> 4.U Shaped mixed plug flow - Some US Dairy Farms
>
> Can somebody help us with consultancy as well ?
>
> Thanks
>
> Prabhu.G
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL:
>
<http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylist
s.org/attachments/20130618/2a7b00d4/attachment-0001.html>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> Digestion mailing list
>
> to Send a Message to the list, use the email address
> Digestion at bioenergylists.org <mailto:Digestion at bioenergylists.org>
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioener
gylists.org
>
> for more information about digestion, see
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>
>
>
> ------------------------------
>
> End of Digestion Digest, Vol 34, Issue 5
> ****************************************
>
>
>
>
> _______________________________________________
> Digestion mailing list
>
> to Send a Message to the list, use the email address
> Digestion at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioener
gylists.org
>
> for more information about digestion, see
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylist
s.org/attachments/20130619/1fb87f33/attachment-0001.html>
------------------------------
Subject: Digest Footer
_______________________________________________
Digestion mailing list
to Send a Message to the list, use the email address
Digestion at bioenergylists.org
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioener
gylists.org
for more information about digestion, see
Beginner's Guide to Biogas
http://www.adelaide.edu.au/biogas/
and the Biogas Wiki http://biogas.wikispaces.com/
------------------------------
End of Digestion Digest, Vol 34, Issue 6
****************************************
The above message is for the intended recipient only and may contain confidential information and/or may be subject to legal privilege. If you are not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this message, or any attachment, is strictly prohibited. If it has reached you in error please inform us immediately by reply e-mail or telephone, reversing the charge if necessary. Please delete the message and the reply (if it contains the original message) thereafter. Thank you.
More information about the Digestion
mailing list