[Digestion] Digestion Digest, Vol 14, Issue 17

Sat Sep 1 14:13:57 EDT 2007

The danger to copper, brass, or bronze engine parts is from NH3, which 
"eats" copper.
Discussions about compressing gas for vehicular  use should be 
differentiated from stationary engines.  With stationary engines, generally 
close to a digester, very little compression is needed, just enough to push 
the gas into the carburetor.  Commercial engine manufacturers sell a Biogas 
version which has the nickel plated components to resist corrosion.  In this 
scenario there is little need to purify the gas.

When considering storage of gas for vehicular use, the economics are more 
complicated.   The tank size and pressure determines range of travel between 
fill up intervals.  A big high pressure tank will get you farther but will 
cost more.  The tank size will predominate the design of the vehicle.  This 
is due to the low energy / volume ratio of methane in particular and all 
gaseous fuels in general, in comparison with gasoline or diesel fuel.  So if 
you take raw biogas with 40% CO2, now your tank needs to be 40%bigger.  For 
cold climate operation, any moisture in the gas will condense or freeze 
creating havoc in the plumbing.

Thinking hypothetically, in the future when commercial vehicles are widely 
available for this kind of application, a tight specification for the gas 
will have to be met, otherwise the vehicle manufacturers will void the 
warranty and blame any engine problems on the fuel.  We have seen this in 
the ethanol gasoline additives and biodiesel mixtures.  The relationship 
between vehicle manufacturers and the oil industry has a long and cozy 
history.  This is why there are no commercially available gasoline vehicles 
which have a high compression ratio to utilize E85 efficiently.

One precaution on using iron machine shavings for sulfide removal, some 
machined parts are made from metal with high lead content for the purpose of 
easier machining.  Consider what you would do to dispose with  lead 
containing substances.

----- Original Message ----- 
From: <digestion-request at listserv.repp.org>
To: <digestion at listserv.repp.org>
Sent: Friday, August 31, 2007 9:29 PM
Subject: Digestion Digest, Vol 14, Issue 17

> Send Digestion mailing list submissions to
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> Today's Topics:
>
>   1. compressing biogas (Michael Smith)
>   2. United States biogas office (Warren Weisman)
>   3. Re: Compressing & Scrubbing BIOGAS (gp baron)
>   4. Re: United States biogas office (Tom Miles)
>   5. Re: United States biogas office (Warren Weisman)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 31 Aug 2007 17:01:53 -0500
> From: "Michael Smith" <michael_1234 at msn.com>
> Subject: [Digestion] compressing biogas
> To: "digestion" <digestion at listserv.repp.org>
> Message-ID: <BAY113-DAV31B51F33862F430B45D33F9CE0 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
> What a GREAT discussion. If someone will, please respond to my scenario.
>   A 10 acre plot with a home and one or more greenhouses....10x100 feet or 
> so. I will have access to grass clippings from commercial and multi-family 
> area contractors 5 days a week for 8-9 months of the year. Irrigation from 
> all is from well water and the fertilizer is the available commercial 
> brands used in the Midwest. I would like to digest this for the fertilizer 
> affluent and solid matter most of all. I also would like to compress the 
> gas for intermittent use for electrical, water heating, or heating for the 
> greenhouses. If feasible to power a vehicle, it would be nice to have the 
> option of driving to market, to the store, or social events in a bio 
> vehicle.
>  Power for the homestead is wind, battery backup and generator backup as 
> well.
> I'm sure there are others in the U.S. with the same idea. However, the 
> standard answer is to use it at the time it is made. Is there an 
> economical way for this scenario to come alive?
> By the way, orchard waste, as well as garden wastes would contribute also. 
> All this organic material is FREE. In fact, it is savings to the 
> contractors to give it to me instead of paying to dump it in a landfill.
>
> ------------------------------
>
> Message: 2
> Date: Fri, 31 Aug 2007 15:06:51 -0700 (PDT)
> From: Warren Weisman <weiswar at yahoo.com>
> Subject: [Digestion] United States biogas office
> To: digestion at listserv.repp.org
> Message-ID: <93046.84458.qm at web62411.mail.re1.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
>
> One thing that came up during Paul Harris' visit to
> Oregon was the idea of a US biogas office. If there
> are any other non-commercial biogas enthusiasts and
> universities in the United States who are interested
> in sharing information at a national biogas office,
> please contact me at weiswar at yahoo.com
>
> This office would be a central clearinghouse for
> information about small-scale digesters and biogas and
> act as a point of contact with other countries about
> all things related to the fuel of the future.
>
> I'd be happy to help put the proposal for funding
> together with our grant writer, but all input would be
> most welcome and I would exclude myself from a
> position on the board to avoid any conflict of
> interest.
>
> Warren Weisman
> Eugene, Oregon
>
>
> 
> ____________________________________________________________________________________
> Park yourself in front of a world of choices in alternative vehicles. 
> Visit the Yahoo! Auto Green Center.
> http://autos.yahoo.com/green_center/
>
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 31 Aug 2007 18:06:32 -0700 (PDT)
> From: gp baron <gpbaron4091 at yahoo.com>
> Subject: Re: [Digestion] Compressing & Scrubbing BIOGAS
> To: finstein at envsci.rutgers.edu
> Cc: digestion at listserv.repp.org
> Message-ID: <785144.41838.qm at web54002.mail.re2.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> Thank again to everyone for their enthusiastic responses of scientific, 
> economic and practical information about compressing and scrubbing biogas. 
> The insights of Duncan (see below), the website recommended by Warren (see 
> below) and the comments of Paul (in another reply) that biogas does not 
> react with oil give us the confidence to do the following:
>
>   H2S removal: Make an inexpensive easy-to-open canister filled with iron 
> sponge (lathe machine shavings) to remove some H2S before compression and 
> protect the latter from excessive corrosion. Occasional oiling on the 
> compressor intake will lubricate and also minimize corrosion.
>   Compression: Compress biogas using a belt-driven surplus AC compressors 
> made of alloys that resist corrossion and are cheaper. However, they are 
> not air-cooled so occasional lubrication is necessary. Compress biogas to 
> between 50 & 100 psi to conserve energy & save costs.
>   CO2 removal: Make an inexpensive water column 1 to 2 meters high that 
> will allow biogas to be bubbled from the bottom through baffles in the 
> water (to increase contact & ensure better scrubbing.)
>  These will be pursued, not to produce high quality biogas (with high 
> %CH4) but, to allow biogas containment in tanks. With regulated pressure, 
> this will allow biogas to be used conveniently to produce a strong 
> constant flame on demand: for cooking, in-line shower water heaters, gas 
> lamps and emergency generators.
>
>  Even with only reduced H2S and CO2 removal, our process should extend the 
> compressor service life and allow more fuel (with less CO2) contained in 
> the tank, respectively.
>
>  By measuring carbonates (?) in the water column, we will try to determine 
> CO2 removal efficiency at reduced pressures of 50 to 100 psi. Carbonated 
> water will go to an algae pond (to promote algae growth and prevent CO2 
> escape into the atmosphere.) Later, algae will be fed into the digester 
> (to improve digestion?)
>
>  What do you think? Your suggestions and critiques are most welcome. We 
> will be happy to share our findings with everyone when we get them.
>
>  Dacal a salamat & mabuhay ang lahat. (Many thanks & long life to all!)
>
>  Gerry
>
>
> finstein at envsci.rutgers.edu wrote:
>  To all,
>
> In Digestion Digest, Vol 14, Issue 15 (30 August 2007), Duncan Martin
> contributed the following memorable gem Re: biogas and its uses. It is
> worth copying:
>
> ------------------------------------------------
>
>> From: "Duncan Martin"
>> Whatever method you think of using, do reflect first on the advice
>> given by Paul Harris the few hours ago to consider very carefully
>> why you should want to produce pure methane.
>
>> Unless you want it for some kind of chemical feedstock, you
>> presumably want it as a fuel.
>
>> If you want it as a transport fuel, it is true that storage capacity
>> would be enhanced by the use of pure methane. However, it would
>> not even be doubled, so the cost would have to be very low to make this
>> worthwhile.
>
>> Pure methane would be more energy efficient in any combustion device BUT
>> the energy required to purify it might well exceed any efficiency gain
> --> and that is before you even consider the cost.
>
>> Bear in mind too that the diluent effect of carbon dioxide in combustion
>> is vastly exceeded by the diluent effect of the nitrogen in the
>> combustion air.
>
>> Consider the stoichiometry of combustion.
>
>> With pure gases:
>> CH4 + 2O2 = CO2 + 2H2O
>
>> If the CH4 comes with some unwanted CO2 (lets say 2:1 for simplicity),
>> the > eqn becomes:
>> (CO2 + 2CH4) + 4O2 = 3CO2 + 4H2O
>
>> Now the extra CO2 is indeed a 'passenger' in any boiler or gas engine,
>> adding to the volume of the hot gases that escape via the flue or
>> exhaust pipe -and thus to the energy lost in them.
>
>> BUT remember that the oxygen comes with a lot of unwanted gas too -
>> nitrogen, in a 4:1 ratio, so the true equation for the combustion
>> process is:
>> (C02 + 2CH4) + (4O2 + 16N2) = 3CO2 + 4H2O + 16N2
>
>> The nitrogen is just as much a passenger as the carbon dioxide is --
>> and there is 16 times more of it (by volume). We all know that it is
>> very rarely economic to supply an engine or any boiler with pure oxygen
>> instead of air> (unless you work for NASA!), so this should be a warning
>> that the removal of carbon dioxide is unlikely to make sense either.
> Of > course, it might be economic if the removal of carbon dioxide was
> very
>> much cheaper than the removal of nitrogen. However, there is little
>> point in considering one without considering the other, since for all
>> you know you might be considering the less economic option.
>
>> Food for thought?
>
>> Best regards
>
>> Duncan J Martin
>>
>> Chair
>> Republic of Ireland Centre
>> Chartered Institution of Wastes Management
>>
>> ================================
>> CONTACT DETAILS
>> Duncan J Martin, PhD, CEng, CSci, MIEI, MCIWM, MIChemE
>> 24 Townsfield, Cloughjordan, N Tipperary, Ireland
>> Mobile: +353 86 8377 906
>> Home: +353 505 42087
>> Email: duncanjmartin at eircom.net
>> ================================
> ----------------------------------------------------------------------
>>
>>
>>
>>
>>
>>
>> ----- Original Message -----
>> From: "Warren Weisman"
>> To:
>> Sent: Thursday, August 30, 2007 7:13 PM
>> Subject: [Digestion] Scrubbing biogas into biomethane article
>>
>>
>>>
>>> Here's an article that covers a number of different
>>> technologies to scrub biogas into biomethane.
>>>
>>> The simple, low-cost method of just bubbling your
>>> biogas through a solution of lime and water is not
>>> mentioned, but is in use in many countries.
>>>
>>> http://www.westernuniteddairymen.com/Biogas%20Fuel%20Report/Chapter%203.pdf
>>>
>>> Warren Weisman
>>> USA
>>>
>>>
>>>
>>> ____________________________________________________________________________________
>>> Pinpoint customers who are looking for what you sell.
>>> http://searchmarketing.yahoo.com/
>>>
>>> _______________________________________________
>>> Digestion mailing list
>>> Digestion at listserv.repp.org
>>> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
>>> Beginner's Guide to Biogas
>>> http://www.adelaide.edu.au/biogas/
>>> http://info.bioenergylists.org
>>>
>>>
>>>
>>> --
>>> No virus found in this incoming message.
>>> Checked by AVG Free Edition.
>>> Version: 7.5.484 / Virus Database: 269.12.12/979 - Release Date:
>>> 29/08/2007 20:21
>>>
>>
>>
>>
>>
>> ------------------------------
>>
>> Message: 6
>> Date: Thu, 30 Aug 2007 20:19:13 -0400
>> From: Jaime Marti Herrero
>> Subject: [Digestion] water manure rate
>> To:
>> Message-ID:
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> Hi everybody.
>>
>> In the last moths im meeting people who is installing tubular 
>> biodigesters
>> and they are using 1:2 manure:water rate to feed the biodigesters. From
>> five years ago i started using 1:4 rate (recomended by Lylian Rodriguez
>> and Preston), but from two years ago im using 1:3 because the in some
>> places the are not that much water for 1:4.
>>
>> the reason tu use 1:3 or 1:4 is to avoid the formation of the foam that
>> stop the production of biogas. But if really you can work wiyh a lower
>> rate (1:2) without problems with the foam, this will be a great issue,
>> because the volume required wil be lower and the cost os materials and
>> biodigester as well.
>>
>> So please, have you got good expiriences with low rate manuere:water for
>> long time with out foam?
>>
>> thanks everybody
>> we keep in contact
>> jaime
>> _________________________________________________________________
>> News, entertainment and everything you care about at Live.com. Get it 
>> now!
>> http://www.live.com/getstarted.aspx
>>
>> ------------------------------
>>
>> Message: 7
>> Date: Fri, 31 Aug 2007 07:04:13 +0530
>> From: adkarve
>> Subject: Re: [Digestion] Scrubbing biogas
>> To: digestion at listserv.repp.org
>> Message-ID: <000701c7eb6f$41b7a4c0$4d69fea9 at adkarve>
>> Content-Type: text/plain; charset=iso-8859-1
>>
>> Dear Biogas Workers,
>> All over the world, efforts are on to use biogas as fuel in an internal
>> combustion engine. We were told by an expert that there was no need to
>> remove CO2 from the biogas. I would like to know, how important it was to
>> remove H2S from biogas. In my system, where we produce biogas from food
>> waste, we have only traces of H2S in our biogas. Due to oxidation, it is
>> supposed to get converted into S02, and by combining with water vapour,
>> perhaps into H2SO3. This is not as strong an acid as H2SO4. The cylinder,
>> piston, piston rings and valves of an internal combustion engine are
>> supposed to be coated by a film of lubricating oil. So how much is the
>> danger of corrosion of the engine due to sulphurous acid? There is also
>> nitrogen in the air, which goes into the engine, and a part of it gets
>> converted into NOx. Does this compound get converted into nitrous and
>> perhaps also into nitric acid? Don't these acids harm the engine? I shall
>> be grateful to get answers to my questions.
>> Yours
>> A.D.Karve
>>
>> ----- Original Message -----
>> From: Duncan Martin
>> To: Warren Weisman ;
>> Sent: Friday, August 31, 2007 3:39 AM
>> Subject: Re: [Digestion] Scrubbing biogas into biomethane article
>>
>>
>>> Whatever method you think of using, do reflect first on the advice given
>> by
>>> Paul Harris the few hours ago to consider very carefully why you should
>> want
>>> to produce pure methane.
>>>
>>> Unless you want it for some kind of chemical feedstock, you presumably
>> want
>>> it as a fuel.
>>>
>>> If you want it as a transport fuel, it is true that storage capacity
>>> would
>>> be enhanced by the use of pure methane. However, it would not even be
>>> doubled, so the cost would have to be very low to make this worthwhile.
>>>
>>> Pure methane would be more energy efficient in any combustion device BUT
>> the
>>> energy required to purify it might well exceed any efficiency gain --
>>> and
>>> that is before you even consider the cost.
>>>
>>> Bear in mind too that the diluent effect of carbon dioxide in combustion
>> is
>>> vastly exceeded by the diluent effect of the nitrogen in the combustion
>> air.
>>>
>>> Consider the stoichiometry of combustion.
>>>
>>> With pure gases:
>>> CH4 + 2O2 = CO2 + 2H2O
>>>
>>> If the CH4 comes with some unwanted CO2 (lets say 2:1 for simplicity),
>>> the
>>> eqn becomes
>>> (CO2 + 2CH4) + 4O2 = 3CO2 + 4H2O
>>>
>>> Now the extra CO2 is indeed a 'passenger' in any boiler or gas engine,
>>> adding to the volume of the hot gases that escape via the flue or
>>> exhaust
>>> pipe -and thus to the energy lost in them.
>>>
>>> BUT remember that the oxygen comes with a lot of unwanted gas too -
>>> nitrogen, in a 4:1 ratio, so the true equation for the combustion
>>> process
>>> is:
>>> (C02 + 2CH4) + (4O2 + 16N2) = 3CO2 + 4H2O + 16N2
>>>
>>> The nitrogen is just as much a passenger as the carbon dioxide is -- and
>>> there is 16 times more of it (by volume). We all know that it is very
>> rarely
>>> economic to supply an engine or any boiler with pure oxygen instead of
>>> air
>>> (unless you work for NASA!), so this should be a warning that the
>>> removal
>> of
>>> carbon dioxide is unlikely to make sense either. Of course, it might be
>>> economic if the removal of carbon dioxide was very much cheaper than the
>>> removal of nitrogen. However, there is little point in considering one
>>> without considering the other, since for all you know you might be
>>> considering the less economic option.
>>>
>>> Food for thought?
>>>
>>>
>>> Best regards
>>>
>>> Duncan J Martin
>>>
>>> Chair
>>> Republic of Ireland Centre
>>> Chartered Institution of Wastes Management
>>>
>>> ================================
>>> CONTACT DETAILS
>>> Duncan J Martin, PhD, CEng, CSci, MIEI, MCIWM, MIChemE
>>> 24 Townsfield, Cloughjordan, N Tipperary, Ireland
>>> Mobile: +353 86 8377 906
>>> Home: +353 505 42087
>>> Email: duncanjmartin at eircom.net
>>> ================================
>>
>>
>>
>>
>>
>> ------------------------------
>>
>> Message: 8
>> Date: Fri, 31 Aug 2007 10:11:09 +0100
>> From: "alastair ward \(IGER-NW\)"
>> Subject: Re: [Digestion] Scrubbing biogas
>> To: "adkarve" ,
>> Message-ID:
>> <13DEE40AE4BF764586DBF27022F0D6A701F8EB59 at nwe2ksrv1.igernet.bbsrc.ac.uk>
>>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> I read somewhere that the H2S is a problem for copper based components in
>> an engine, including gaskets and some bearing surfaces so I would think
>> that for this use scrubbing H2S is very important. I believe the waste
>> water treatment industry has most experience with biogas engines?
>>
>> Alastair Ward
>>
>> ________________________________
>>
>> From: digestion-bounces at listserv.repp.org on behalf of adkarve
>> Sent: Fri 31/08/2007 02:34
>> To: digestion at listserv.repp.org
>> Subject: Re: [Digestion] Scrubbing biogas
>>
>>
>>
>> Dear Biogas Workers,
>> All over the world, efforts are on to use biogas as fuel in an internal
>> combustion engine. We were told by an expert that there was no need to
>> remove CO2 from the biogas. I would like to know, how important it was to
>> remove H2S from biogas. In my system, where we produce biogas from food
>> waste, we have only traces of H2S in our biogas. Due to oxidation, it is
>> supposed to get converted into S02, and by combining with water vapour,
>> perhaps into H2SO3. This is not as strong an acid as H2SO4. The cylinder,
>> piston, piston rings and valves of an internal combustion engine are
>> supposed to be coated by a film of lubricating oil. So how much is the
>> danger of corrosion of the engine due to sulphurous acid? There is also
>> nitrogen in the air, which goes into the engine, and a part of it gets
>> converted into NOx. Does this compound get converted into nitrous and
>> perhaps also into nitric acid? Don't these acids harm the engine? I shall
>> be grateful to get answers to my questions.
>> Yours
>> A.D.Karve
>>
>> ----- Original Message -----
>> From: Duncan Martin
>> To: Warren Weisman ;
>> Sent: Friday, August 31, 2007 3:39 AM
>> Subject: Re: [Digestion] Scrubbing biogas into biomethane article
>>
>>
>>> Whatever method you think of using, do reflect first on the advice given
>> by
>>> Paul Harris the few hours ago to consider very carefully why you should
>> want
>>> to produce pure methane.
>>>
>>> Unless you want it for some kind of chemical feedstock, you presumably
>> want
>>> it as a fuel.
>>>
>>> If you want it as a transport fuel, it is true that storage capacity
>>> would
>>> be enhanced by the use of pure methane. However, it would not even be
>>> doubled, so the cost would have to be very low to make this worthwhile.
>>>
>>> Pure methane would be more energy efficient in any combustion device BUT
>> the
>>> energy required to purify it might well exceed any efficiency gain --
>>> and
>>> that is before you even consider the cost.
>>>
>>> Bear in mind too that the diluent effect of carbon dioxide in combustion
>> is
>>> vastly exceeded by the diluent effect of the nitrogen in the combustion
>> air.
>>>
>>> Consider the stoichiometry of combustion.
>>>
>>> With pure gases:
>>> CH4 + 2O2 = CO2 + 2H2O
>>>
>>> If the CH4 comes with some unwanted CO2 (lets say 2:1 for simplicity),
>>> the
>>> eqn becomes
>>> (CO2 + 2CH4) + 4O2 = 3CO2 + 4H2O
>>>
>>> Now the extra CO2 is indeed a 'passenger' in any boiler or gas engine,
>>> adding to the volume of the hot gases that escape via the flue or
>>> exhaust
>>> pipe -and thus to the energy lost in them.
>>>
>>> BUT remember that the oxygen comes with a lot of unwanted gas too -
>>> nitrogen, in a 4:1 ratio, so the true equation for the combustion
>>> process
>>> is:
>>> (C02 + 2CH4) + (4O2 + 16N2) = 3CO2 + 4H2O + 16N2
>>>
>>> The nitrogen is just as much a passenger as the carbon dioxide is -- and
>>> there is 16 times more of it (by volume). We all know that it is very
>> rarely
>>> economic to supply an engine or any boiler with pure oxygen instead of
>>> air
>>> (unless you work for NASA!), so this should be a warning that the
>>> removal
>> of
>>> carbon dioxide is unlikely to make sense either. Of course, it might be
>>> economic if the removal of carbon dioxide was very much cheaper than the
>>> removal of nitrogen. However, there is little point in considering one
>>> without considering the other, since for all you know you might be
>>> considering the less economic option.
>>>
>>> Food for thought?
>>>
>>>
>>> Best regards
>>>
>>> Duncan J Martin
>>>
>>> Chair
>>> Republic of Ireland Centre
>>> Chartered Institution of Wastes Management
>>>
>>> ================================
>>> CONTACT DETAILS
>>> Duncan J Martin, PhD, CEng, CSci, MIEI, MCIWM, MIChemE
>>> 24 Townsfield, Cloughjordan, N Tipperary, Ireland
>>> Mobile: +353 86 8377 906
>>> Home: +353 505 42087
>>> Email: duncanjmartin at eircom.net
>>> ================================
>>
>>
>>
>> _______________________________________________
>> Digestion mailing list
>> Digestion at listserv.repp.org
>> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
>> Beginner's Guide to Biogas
>> http://www.adelaide.edu.au/biogas/
>> http://info.bioenergylists.org
>>
>>
>>
>>
>>
>> ------------------------------
>>
>> _______________________________________________
>> Digestion mailing list
>> Digestion at listserv.repp.org
>> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
>>
>> End of Digestion Digest, Vol 14, Issue 15
>> *****************************************
>>
>
>
> Melvin S. Finstein, Ph.D.
> Emeritus Professor of Environmental Science
> Rutgers, The State University of New Jersey
> Head, ArrowBio USA
>
> 105 Carmel Road
> Wheeling, WV 26003
> (304) 242-0341
> Email: finstein at envsci.rutgers.edu
> Skype: melvinfinstein
>
>
> _______________________________________________
> Digestion mailing list
> Digestion at listserv.repp.org
> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> http://info.bioenergylists.org
>
>
>
> ------------------------------
>
> Message: 4
> Date: Fri, 31 Aug 2007 18:11:47 -0700
> From: "Tom Miles" <tmiles at trmiles.com>
> Subject: Re: [Digestion] United States biogas office
> To: "'Warren Weisman'" <weiswar at yahoo.com>,
> <digestion at listserv.repp.org>
> Message-ID: <000001c7ec35$1fecc160$5fc64420$@com>
> Content-Type: text/plain; charset="us-ascii"
>
> Shouldn't that be a biogas "station"?
>
> Tom
>
> -----Original Message-----
> From: digestion-bounces at listserv.repp.org
> [mailto:digestion-bounces at listserv.repp.org] On Behalf Of Warren Weisman
> Sent: Friday, August 31, 2007 3:07 PM
> To: digestion at listserv.repp.org
> Subject: [Digestion] United States biogas office
>
>
> One thing that came up during Paul Harris' visit to
> Oregon was the idea of a US biogas office. If there
> are any other non-commercial biogas enthusiasts and
> universities in the United States who are interested
> in sharing information at a national biogas office,
> please contact me at weiswar at yahoo.com
>
> This office would be a central clearinghouse for
> information about small-scale digesters and biogas and
> act as a point of contact with other countries about
> all things related to the fuel of the future.
>
> I'd be happy to help put the proposal for funding
> together with our grant writer, but all input would be
> most welcome and I would exclude myself from a
> position on the board to avoid any conflict of
> interest.
>
> Warren Weisman
> Eugene, Oregon
>
>
>
> ____________________________________________________________________________
> ________
> Park yourself in front of a world of choices in alternative vehicles. 
> Visit
> the Yahoo! Auto Green Center.
> http://autos.yahoo.com/green_center/
>
> _______________________________________________
> Digestion mailing list
> Digestion at listserv.repp.org
> http://listserv.repp.org/mailman/listinfo/digestion_listserv.repp.org
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> http://info.bioenergylists.org
>
>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Fri, 31 Aug 2007 19:29:17 -0700 (PDT)
> From: Warren Weisman <weiswar at yahoo.com>
> Subject: Re: [Digestion] United States biogas office
> To: Tom Miles <tmiles at trmiles.com>, digestion at listserv.repp.org
> Message-ID: <771044.4881.qm at web62401.mail.re1.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
>
> Hi, Tom,
>
> My thinking was something along the lines of what is
> done in China, with a central government biogas office
> that disseminates information out to branches building
> digesters in the countryside. Their organization is a
> thing of beauty and the reason for China being the
> world leader in residential biogas. They send groups
> to train villagers how to construct a pretty standard
> pit-type 10 cu.m. digester.
>
> Right now in the U.S. there's no centralized place to
> get information and we're having tons and tons of
> poorly managed digesters fail and kill interest in
> biogas.
>
> Warren
>
>
> --- Tom Miles <tmiles at trmiles.com> wrote:
>
>> Shouldn't that be a biogas "station"?
>>
>> Tom
>>
>> -----Original Message-----
>> From: digestion-bounces at listserv.repp.org
>> [mailto:digestion-bounces at listserv.repp.org] On
>> Behalf Of Warren Weisman
>> Sent: Friday, August 31, 2007 3:07 PM
>> To: digestion at listserv.repp.org
>> Subject: [Digestion] United States biogas office
>>
>>
>> One thing that came up during Paul Harris' visit to
>> Oregon was the idea of a US biogas office. If there
>> are any other non-commercial biogas enthusiasts and
>> universities in the United States who are interested
>> in sharing information at a national biogas office,
>> please contact me at weiswar at yahoo.com
>>
>> This office would be a central clearinghouse for
>> information about small-scale digesters and biogas
>> and
>> act as a point of contact with other countries about
>> all things related to the fuel of the future.
>>
>> I'd be happy to help put the proposal for funding
>> together with our grant writer, but all input would
>> be
>> most welcome and I would exclude myself from a
>> position on the board to avoid any conflict of
>> interest.
>>
>> Warren Weisman
>> Eugene, Oregon
>>
>>
>>
>>
> ____________________________________________________________________________
>> ________
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>> Beginner's Guide to Biogas
>> http://www.adelaide.edu.au/biogas/
>> http://info.bioenergylists.org
>>
>>
>>
>
>
>
>
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> End of Digestion Digest, Vol 14, Issue 17
> *****************************************
> 