[Digestion] Rép. : Digestion Digest, Vol 11, Issue 25 - Terrence, Co-Digestion

Terrence Sauvé tsauve at alfredc.uoguelph.ca
Wed May 30 08:13:00 CDT 2007 

Sorry Stan, I was not clear in my statement. I need to measure the concentration of biogas out of my lab-scale and the full scale digestors because we will be running studies for OMAFRA, the ministry of ag. in Ontario for co-digestion of off-farm materials. We need to measure the higher methane yeilds and other side-projects stuff. 
The full-scale digesters already use a biogas flowrate meter, but we have to take a huge air sample to run it in the GC (which is not ours).
Terrence

>>> "stan simon" <slsimon at tds.net> 29/05/07 20:26 >>>
Dear Terrence,

You might want to check with Biopower in South Dakota to see what they use 
in their setup.  My ignorant question is why do you need to measure these 
fractions?  Are you trying to verify the operation of the digester?  Maybe 
there is some other parameter that would be easier to measure. (like 
volumetric flow rate of gas) When I last looked at a digester in operation 
(Haubenschild Dairy) they didn't have any sensors like that.

Stan L Simon, P.E.
Chief Weed Picker
S. L. Simon Engineering P.A.
8060 160th Av NE
Kerkhoven, MN 56252
320-264-5354 Phone/Fax
320-894-1117  Cell
slsimon at tds.net



----- Original Message ----- 
From: <digestion-request at listserv.repp.org>
To: <digestion at listserv.repp.org>
Sent: Tuesday, May 29, 2007 11:00 AM
Subject: Digestion Digest, Vol 11, Issue 25


> Send Digestion mailing list submissions to
> digestion at listserv.repp.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
> or, via email, send a message with subject or body 'help' to
> digestion-request at listserv.repp.org
>
> You can reach the person managing the list at
> digestion-owner at listserv.repp.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Digestion digest..."
>
>
> Today's Topics:
>
>   1. Biogas concentration sensors - technical question
>      ( Terrence Sauv? )
>   2. Re: Don't Know (adkarve)
>   3. Re: Don't Know (Marcel Lenormand)
>   4. Re: Biogas concentration sensors - technical question
>      (alastair ward (IGER-NW))
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 28 May 2007 14:59:43 -0400
> From: " Terrence Sauv? " <tsauve at alfredc.uoguelph.ca>
> Subject: [Digestion] Biogas concentration sensors - technical question
> To: <digestion at listserv.repp.org>
> Message-ID: <465AEE5F020000A800003AA2 at alfredc.uoguelph.ca>
> Content-Type: text/plain; charset=US-ASCII
>
> Hi all AD enthousiasts,
> I am currently preparing for my thesis on AD and co-digestion for medium 
> size dairy farms in Ontario, Canada.
> I am having difficulty finding a "decently" priced biogas sensor to 
> measure in-line concentrations of methane, carbon dioxyde and hydrogen 
> sulfide for both lab-scale and full scale applications.
> There is a few companies in Germany that offer that service but for around 
> 7'500 to 10'000 euros price range.
> Considering that we also have to run VFA's, based on those prices, we 
> might as well buy ourselves a GC and a bunch of columns with it.
> We were also falsly recommended by a company to purchase a hand-held 
> portable gas detector, commonly used in the natural gas security industry. 
> However, these sensors are catalytic and only works at normal atmospheric 
> pressure...
>
> I would like to receive your feedback on this issue and if you have any 
> technical experience with brand-name IR adsorption of "in-line" gas 
> meters.
> Thanks all.
>
> Terrence
>
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 28 May 2007 11:36:18 +0530
> From: adkarve <adkarve at pn2.vsnl.net.in>
> Subject: Re: [Digestion] Don't Know
> To: digestion at listserv.repp.org
> Message-ID: <000301c7a17a$d06c77c0$4d69fea9 at adkarve>
> Content-Type: text/plain; charset=iso-8859-1
>
> Recognising that one is ignorant, is the first step towards acquiring
> knowledge.
> Yours
> A.D.Karve
> ----- Original Message -----
> From: Paul Harris <paul.harris at adelaide.edu.au>
> To: <g_vishwas at vsnl.com>
> Cc: <digestion at listserv.repp.org>
> Sent: Monday, May 28, 2007 11:07 AM
> Subject: [Digestion] Don't Know
>
>
>> I think another "don't know" is required!
>>
>> "Those who know don't know don't know that they don't know everything."
>>
>> I agree that the more you know, the more you know that you don't know
>> everything!
>>
>> g_vishwas at vsnl.com wrote:
>> >
>> > Those who know dont know  that they dont know everything
>> >
>> > Vishwas Gokhale
>> --
>> Mr. Paul Harris
>> Room G8, Leske Building
>> Faculty of Sciences,
>> The  University of Adelaide, Roseworthy Campus, AUSTRALIA 5371
>> Ph    : +61 8 8303 7880
>> Fax   : +61 8 8303 7979
>> mailto:paul.harris at adelaide.edu.au
>> I now use "MailGuard" - if you do not get a reply please make contact
>> again (by fax?)
>> http://www.adelaide.edu.au/directory/paul.harris
>> Member IOBB http://www.iobbnet.org/drupal/
>>
>> CRICOS Provider Number 00123M
>> -----------------------------------------------------------
>> This email message is intended only for the addressee(s)
>> and contains information that may be confidential and/or
>> copyright.  If you are not the intended recipient please
>> notify the sender by reply email and immediately delete
>> this email. Use, disclosure or reproduction of this email
>> by anyone other than the intended recipient(s) is strictly
>> prohibited. No representation is made that this email or
>> any attachments are free of viruses. Virus scanning is
>> recommended and is the responsibility of the recipient.
>>
>> _______________________________________________
>> Digestion mailing list
>> Digestion at listserv.repp.org
>> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 29 May 2007 00:07:02 +0100
> From: Marcel Lenormand <marcel.lenormand at gmail.com>
> Subject: Re: [Digestion] Don't Know
> To: digestion at listserv.repp.org
> Message-ID: <CB937553-6781-4104-8909-8F38B5C7907A at gmail.com>
> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
>
> This is all new to me. I had no idea.
>
> ;)
>
> Marcel
>
>
> On 28 May 2007, at 07:06, adkarve wrote:
>
>> Recognising that one is ignorant, is the first step towards acquiring
>> knowledge.
>> Yours
>> A.D.Karve
>> ----- Original Message -----
>> From: Paul Harris <paul.harris at adelaide.edu.au>
>> To: <g_vishwas at vsnl.com>
>> Cc: <digestion at listserv.repp.org>
>> Sent: Monday, May 28, 2007 11:07 AM
>> Subject: [Digestion] Don't Know
>>
>>
>>> I think another "don't know" is required!
>>>
>>> "Those who know don't know don't know that they don't know
>>> everything."
>>>
>>> I agree that the more you know, the more you know that you don't know
>>> everything!
>>>
>>> g_vishwas at vsnl.com wrote:
>>>>
>>>> Those who know dont know  that they dont know everything
>>>>
>>>> Vishwas Gokhale
>>> --
>>> Mr. Paul Harris
>>> Room G8, Leske Building
>>> Faculty of Sciences,
>>> The  University of Adelaide, Roseworthy Campus, AUSTRALIA 5371
>>> Ph    : +61 8 8303 7880
>>> Fax   : +61 8 8303 7979
>>> mailto:paul.harris at adelaide.edu.au
>>> I now use "MailGuard" - if you do not get a reply please make contact
>>> again (by fax?)
>>> http://www.adelaide.edu.au/directory/paul.harris
>>> Member IOBB http://www.iobbnet.org/drupal/
>>>
>>> CRICOS Provider Number 00123M
>>> -----------------------------------------------------------
>>> This email message is intended only for the addressee(s)
>>> and contains information that may be confidential and/or
>>> copyright.  If you are not the intended recipient please
>>> notify the sender by reply email and immediately delete
>>> this email. Use, disclosure or reproduction of this email
>>> by anyone other than the intended recipient(s) is strictly
>>> prohibited. No representation is made that this email or
>>> any attachments are free of viruses. Virus scanning is
>>> recommended and is the responsibility of the recipient.
>>>
>>> _______________________________________________
>>> Digestion mailing list
>>> Digestion at listserv.repp.org
>>> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
>>
>>
>> _______________________________________________
>> Digestion mailing list
>> Digestion at listserv.repp.org
>> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 29 May 2007 09:26:45 +0100
> From: "alastair ward \(IGER-NW\)" <alastair.ward at bbsrc.ac.uk>
> Subject: Re: [Digestion] Biogas concentration sensors - technical
> question
> To: Terrence Sauv? <tsauve at alfredc.uoguelph.ca>,
> <digestion at listserv.repp.org>
> Message-ID:
> <13DEE40AE4BF764586DBF27022F0D6A701F8EA89 at nwe2ksrv1.igernet.bbsrc.ac.uk>
>
> Content-Type: text/plain; charset="iso-8859-1"
>
> I have been using a Crowcon triple plus + IR gas sensor that will measure 
> up to 4 gases. I don't think they do CO2, at least not at the 
> concentration expected in AD but they can measure H2S up to about 200ppm I 
> think. I was only interested in the methane part, and as standard it comes 
> with a 0-100% LEL IR sensor, but can be bought with a dual range IR that 
> will also measure 0-100% volume. It is of course designed for safety 
> around landfill sites, so I advise the purchase of  the hand operated bulb 
> which will allow you to channel gas from a digester across the sensors 
> rather than constructing a channel from plastic as I did. The H2S sensor 
> would be catalytic but I have no real pressure in my biogas: a couple of 
> PSI is a lot when you ask to have a large tank manufactured. I just vent 
> off the gas through the sensor for a minute or two, then flush it out with 
> air. I think the dual range unit alone (with charger) would be less than 
> 2000 euros.
>
> Alastair Ward
>
> ________________________________
>
> From: digestion-bounces at listserv.repp.org on behalf of Terrence Sauv?
> Sent: Mon 28/05/2007 19:59
> To: digestion at listserv.repp.org
> Subject: [Digestion] Biogas concentration sensors - technical question
>
>
>
> Hi all AD enthousiasts,
> I am currently preparing for my thesis on AD and co-digestion for medium 
> size dairy farms in Ontario, Canada.
> I am having difficulty finding a "decently" priced biogas sensor to 
> measure in-line concentrations of methane, carbon dioxyde and hydrogen 
> sulfide for both lab-scale and full scale applications.
> There is a few companies in Germany that offer that service but for around 
> 7'500 to 10'000 euros price range.
> Considering that we also have to run VFA's, based on those prices, we 
> might as well buy ourselves a GC and a bunch of columns with it.
> We were also falsly recommended by a company to purchase a hand-held 
> portable gas detector, commonly used in the natural gas security industry. 
> However, these sensors are catalytic and only works at normal atmospheric 
> pressure...
>
> I would like to receive your feedback on this issue and if you have any 
> technical experience with brand-name IR adsorption of "in-line" gas 
> meters.
> Thanks all.
>
> Terrence
>
> _______________________________________________
> Digestion mailing list
> Digestion at listserv.repp.org
> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
>
>
>
>
>
> ------------------------------
>
> _______________________________________________
> Digestion mailing list
> Digestion at listserv.repp.org
> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
>
> End of Digestion Digest, Vol 11, Issue 25
> ***************************************** 


_______________________________________________
Digestion mailing list
Digestion at listserv.repp.org
http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org

More information about the Digestion mailing list