Re: [biofuel] Rejoining list with a question

2004-04-09 Thread Kim & Garth Travis

Yes, burning manure or firewood for that matter in the house with 
improperly vented fireplaces and cooking over and open fire does cause 
respiratory problems.  This is not what we were thinking about doing.

Bright Blessings,
Kim

At 05:25 PM 4/8/2004, you wrote:
>Hello Kim
> > >The question:  This months issue of Backwoods Home Magazine has an
>article,
> > >by Rev. J.D. Hooker, on burning manure.  It states that they get
>'somewhat
> > >greater heating value than seasoned hardwood.'
>
>I seem to remember that the degree of burnng manure in India led to
>respiratory problems.
>Can't site a reference.
>
>Reghards Paul Gobert.
>
>
>
>
>
>
>Biofuel at Journey to Forever:
>http://journeytoforever.org/biofuel.html
>
>Biofuels list archives:
>http://infoarchive.net/sgroup/biofuel/
>
>Please do NOT send Unsubscribe messages to the list address.
>To unsubscribe, send an email to:
>[EMAIL PROTECTED]
>Yahoo! Groups Links
>
>
>
>




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Re: [biofuel] Rejoining list with a question

2004-04-09 Thread gobie

Hello Kim
> >The question:  This months issue of Backwoods Home Magazine has an
article,
> >by Rev. J.D. Hooker, on burning manure.  It states that they get
'somewhat
> >greater heating value than seasoned hardwood.'

I seem to remember that the degree of burnng manure in India led to
respiratory problems.
Can't site a reference.

Reghards Paul Gobert.





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Re: [biofuel] Rejoining list with a question

2004-04-09 Thread Art Krenzel

Keith,

I am pleased to see  you joining in on this discussion because I think this 
topic is right down you alley.

I would like to suggest that the biogas energy be recovered in a small, slow 
speed, long life diesel generator such as a "Lister Engine" rather than a steam 
engine.  Diesel engines deliver about three times the KWHr per /BTU than steam 
engines due to higher operating efficiency.  Biogas needs to be combusted in a 
diesel engine rather than a gasoline engine because the diesel has a higher 
compression ratio (biogas needs about 12 - 14:1 compression ratio for best 
combustion).  The waste heat from the water jacket on the Lister engine is more 
than sufficient to maintain thermophilic temperatures of the biogas reactor and 
you still have the heat from the engine exhaust for other higher energy uses as 
well.  About 25% of the biogas energy will be recovered as electricity and the 
remainder as heat energy at various temperatures.

It is important to look at the monthly and seasonal energy consumption profile 
to determine how much energy should be recovered in each form (summer vs winter 
usages).  Do you need 5 KWHr per day as electricity and 50,000 BTU's as space 
heat and 6,000 BTU's for cooking gas  and 30,000 BTU's for hot water, etc.  
Then you can lay out the size of each the components necessary to convert the 
biogas into the appropriate form of energy.  Perhaps some of the biogas will 
bypass the diesel engine and be fed directly into a water heater burner because 
your needs are for greater amounts of hot water for example.

One of the nice features is that the biogas system produces energy fairly 
uniformly 24 hours per day.  So with a small amount of batteries and insulated 
tanks, you can easily handle typical surges in demand during the day.

Of, course it also helps if you have a way to continuously supply the wastes 
needed to feed the biogas reactor.  Having a herd of pigs, cows or horses helps 
alot.  You might find yourself supply limited and need to import other wastes 
such as grass clippings or grain wastes or food wastes, etc to make up for a 
feedstock supply deficiency.

One thing is certain - ALL of these efforts should be made to maximize the 
return of organic matter to soil as a mature soil amendment.  Then the 
discussions about sustainability can begin.

Art Krenzel


  - Original Message - 
  From: Keith Addison 
  To: biofuel@yahoogroups.com 
  Sent: Thursday, April 08, 2004 10:01 AM
  Subject: Re: [biofuel] Rejoining list with a question


  Hi Kim

  Good to see you back.

  >Keith, I told you I would be back 

  I thought it was going to be a year or two, glad you made it sooner.

  >Greetings,
  >
  >I was a member of this list for several years, but quit to have time to
  >learn other things.  I hope all the regulars are doing well, and I hope to
  >get to know all the new people.
  >
  >My husband and I own 20 acres in Texas and we are trying to live and farm
  >sustainably.  For now we are on the grid, but hope to change that one
  >day.  We practise alternative building, such as paper adobe and cordwood.
  >
  >The question:  This months issue of Backwoods Home Magazine has an article,
  >by Rev. J.D. Hooker, on burning manure.  It states that they get 'somewhat
  >greater heating value than seasoned hardwood.'By using the ashes in the
  >garden, after several years of application have reach a rate of 'more than
  >40% higher' than the garden with either commercial fertilizer or spread
  >manure.

  What was higher? Yields? You'd want other indicators than that.

  Spreading manure is generally not a good technique. (But letting the 
  livestock do the spreading can be a very good technique.)

  >He did not compare it to composted manure, so much testing of his
  >'findings' still needs to be done.

  Yes.

  >If one can get both heat and fertilizer
  >out of manure,

  You need to distinguish between "fertilizer" and "nutrients".

  >then one could use the manure to fire a wood fuel steam
  >generator and be totally sustainable.
  >
  >The author states he got the idea from a friend from Thailand.  There are
  >no flaws mentioned in the article, and the article is only about heat and
  >the garden.  The steam generator is my idea.  This seems to easy and too
  >perfect, what is the flaw that I have missed?

  As Art said, no organic matter. Ash just leaves the minerals and will 
  provide nutrients but not soil fertility - it could even harm soil 
  fertility. The effect of such treatments depends very much on what 
  condition the soil is in to start with. Too much ash on low-O/M 
  acidic soils will make matters worse, not better (eg hardpan), and 
  not very much might be too much. There's no substitute for humus 
  maintenance, and ash can't do that.

  How

Re: [biofuel] Rejoining list with a question

2004-04-09 Thread Art Krenzel

Luis,

Thank you for your kind words, sir.  I feel that I have found a kindred spirit 
out there in the real world.

>From your address, I can tell that you are most likely deeply involved in 
>bagasse recovery efforts.  What are you doing now and where are you headed in 
>handling bagasse after the sugar has been removed?

The sugar industry has been successful at combusting bagasse in boilers as an 
energy source.  How do you handle the bagasse which has been contaminated with 
dirt, rocks, etc?  How do you handle spend sugar liquors?  What are the BOD 
content of those liquids being discharged from the plant?

Looking forward to your reply.

Art Krenzel, P.E.
PHOENIX TECHNOLOGIES
10505 NE 285TH Street
Battle Ground, WA 98604
360-666-1883 voice
[EMAIL PROTECTED]


  - Original Message - 
  From: Contactos Mundiales 
  To: biofuel@yahoogroups.com 
  Sent: Wednesday, April 07, 2004 6:21 PM
  Subject: RE: [biofuel] Rejoining list with a question


Mr. Art Krenzel
Phoenix Technologies

Dear Art:

I could not agree more with your statements of fact in regards to
  biodigestion.

Please continue sharing your knowledge and experience with us.

With best regards,

Luis R. Calzadilla
VP Operations
Fundaci˜n Sugar Cane Research Org.
Cali, Colombia
Tel (572) 893-6627
[EMAIL PROTECTED]
[EMAIL PROTECTED]




- Original Message -
From: Art Krenzel <[EMAIL PROTECTED]>
To: 
Sent: Wednesday, April 07, 2004 12:32 PM
    Subject: Re: [biofuel] Rejoining list with a question


> Kim,
>
> When you burn manure you remove the organic matter from the final
  product and retain only the minerals which can help the soil as an oxidized
  water soluble fertilizer.  You, since you are operating sustainably, want to
  retain the organic matter as a component of your soil system I would
  suspect.
>
> I would suggest that you consider generating biogas using an anaerobic
  digester to reduce the carbon content by 35 - 50% into biogas containing
  60-65% methane and then recover the remainder of the carbon solids as
  compost for your soil.  Soil organic matter is absolutely required to farm
  sustainability.
>
> This system would allow you to recover energy from the manure in sealed
  tanks when the odor potential is highest and compost the remainder of the
  solids aerobically into a soil conditioner.  You also have water to handle
  which has a very high nutrient content as a supplemental fertilizer and can
  be used in irrigation.  Work with nature at each level and benefit multiple
  times.
>
> There has been an absolute revolution in anaerobic digestion over the
  past five years.  The tankage requirement has dropped to 1/4 the gallons
  required only five years ago.  The process which previously required 30 - 40
  days now can be done in 8 - 10 days.
>
> Art Krenzel, P.E.
> PHOENIX TECHNOLOGIES
> 10505 NE 285TH Street
> Battle Ground, WA 98604
> 360-666-1883 voice
> [EMAIL PROTECTED]






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Re: [biofuel] Rejoining list with a question +

2004-04-09 Thread Hakan Falk
mainder of the carbon solids as
> > >compost for your soil.  Soil organic matter is absolutely required to farm
> > >sustainability.
> > >
> > >This system would allow you to recover energy from the manure in sealed
> > >tanks when the odor potential is highest and compost the remainder of the
> > >solids aerobically into a soil conditioner.  You also have water to handle
> > >which has a very high nutrient content as a supplemental fertilizer and
> > >can be used in irrigation.  Work with nature at each level and benefit
> > >multiple times.
> > >
> > >There has been an absolute revolution in anaerobic digestion over the past
> > >five years.  The tankage requirement has dropped to 1/4 the gallons
> > >required only five years ago.  The process which previously required 30 -
> > >40 days now can be done in 8 - 10 days.
> > >
> > >Art Krenzel, P.E.
> > >PHOENIX TECHNOLOGIES
> > >10505 NE 285TH Street
> > >Battle Ground, WA 98604
> > >360-666-1883 voice
> > >[EMAIL PROTECTED]
> > >   - Original Message -
> > >   From: Kim & Garth Travis
> > >   To: biofuel@yahoogroups.com
> > >   Sent: Wednesday, April 07, 2004 7:55 AM
> > >   Subject: [biofuel] Rejoining list with a question
> > >
> > >
> > >   Greetings,
> > >
> > >   I was a member of this list for several years, but quit to have time to
> > >   learn other things.  I hope all the regulars are doing well, and I
> > hope to
> > >   get to know all the new people.
> > >
> > >   My husband and I own 20 acres in Texas and we are trying to live 
> and farm
> > >   sustainably.  For now we are on the grid, but hope to change that one
> > >   day.  We practise alternative building, such as paper adobe and 
> cordwood.
> > >
> > >   The question:  This months issue of Backwoods Home Magazine has an
> > > article,
> > >   by Rev. J.D. Hooker, on burning manure.  It states that they get
> > 'somewhat
> > >   greater heating value than seasoned hardwood.'By using the ashes in
> > > the
> > >   garden, after several years of application have reach a rate of 'more
> > than
> > >   40% higher' than the garden with either commercial fertilizer or spread
> > >   manure.  He did not compare it to composted manure, so much testing
> > of his
> > >   'findings' still needs to be done.  If one can get both heat and
> > > fertilizer
> > >   out of manure, then one could use the manure to fire a wood fuel steam
> > >   generator and be totally sustainable.
> > >
> > >   The author states he got the idea from a friend from 
> Thailand.  There are
> > >   no flaws mentioned in the article, and the article is only about 
> heat and
> > >   the garden.  The steam generator is my idea.  This seems to easy 
> and too
> > >   perfect, what is the flaw that I have missed?
> > >
> > >   Bright Blessings,
> > >   Kim
> > >
> > >   Keith, I told you I would be back 




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Re: [biofuel] Rejoining list with a question

2004-04-09 Thread Hakan Falk


Kim,

I do not have much experience from farming, but as a teenager I took care 
of racing horses as a hobby. My experiences is more from working with house 
design and studies of old farm houses. The design of old farm houses that 
is very common, is to recuperate heat from manure storage, to heat houses 
during winter and also have the body heat from the animals to contribute to 
the human living space. The most common is to staple the manure (compost) 
along walls shared with the living space. With a more modern and innovative 
design with tubing in the compost, fans and thermostats, you should be able 
to recuperate some heat for space heating from the compost process and 
still get the biogas. I imagine that you need some temperature control so 
you do not cool down the compost too much, but it is worth to look into. If 
I remember right, but do not hold me to the number, you can have 
temperatures around 50 - 60 degree Celsius in a compost during the winter. 
Biogas is a matter of trapping and collecting and can be very simple 
plastic sheeting with tube connectors, like they do in waste dumps. Drying 
and burning the manure, might not be the most efficient method, but it was 
also a part of old farming and the collection was mostly from the fields in 
the summer. Heat and biogas collection, must be more efficient, since you 
also get the best fertilizer.

The first street light systems in cities, was running on biogas from the 
sewer systems. I think that you have a fun, challenging and interesting 
project here. I have long suspected that the tradition to have the animals 
in closed housing, was more a human need for heating system, than the need 
for animal shelter. This because of the design of old farm houses and the 
fact that the animals in most cases would survive perfectly well in the 
nature, with much simpler shelter arrangements.

Hakan


At 14:32 08/04/2004, you wrote:
>Thanks for the reply.  I will need to learn more about biogas, but I had no
>intention of burning all my manure.  Even if I did burn all the cow manure,
>I would still have all the rabbit, pig and human manure left to make
>compost with.  Since there is just me and my husband when he retires on the
>farm, simplicity is an issue.  As is cost, a steam generator is about $200
>US, how much does it cost to set up biogas?  How much extra work is it?  I
>was thinking of only saving the manure for fuel while the cows are in the
>barn due to bad weather, [We are planning on moving to an area that has
>winter.] so we have to clean it up anyway.  I remember reading that
>temperature had an effect on biogas production, how does it work when
>temperatures are below freezing?  It has been a few years since I looked
>into this, so I will check it again, after the garden is finished being
>planted.
>
>Bright Blessings,
>Kim
>
>At 12:32 PM 4/7/2004, you wrote:
> >Kim,
> >
> >When you burn manure you remove the organic matter from the final product
> >and retain only the minerals which can help the soil as an oxidized water
> >soluble fertilizer.  You, since you are operating sustainably, want to
> >retain the organic matter as a component of your soil system I would 
> suspect.
> >
> >I would suggest that you consider generating biogas using an anaerobic
> >digester to reduce the carbon content by 35 - 50% into biogas containing
> >60-65% methane and then recover the remainder of the carbon solids as
> >compost for your soil.  Soil organic matter is absolutely required to farm
> >sustainability.
> >
> >This system would allow you to recover energy from the manure in sealed
> >tanks when the odor potential is highest and compost the remainder of the
> >solids aerobically into a soil conditioner.  You also have water to handle
> >which has a very high nutrient content as a supplemental fertilizer and
> >can be used in irrigation.  Work with nature at each level and benefit
> >multiple times.
> >
> >There has been an absolute revolution in anaerobic digestion over the past
> >five years.  The tankage requirement has dropped to 1/4 the gallons
> >required only five years ago.  The process which previously required 30 -
> >40 days now can be done in 8 - 10 days.
> >
> >Art Krenzel, P.E.
> >PHOENIX TECHNOLOGIES
> >10505 NE 285TH Street
> >Battle Ground, WA 98604
> >360-666-1883 voice
> >[EMAIL PROTECTED]
> >   - Original Message -
> >   From: Kim & Garth Travis
> >   To: biofuel@yahoogroups.com
> >   Sent: Wednesday, April 07, 2004 7:55 AM
> >   Subject: [biofuel] Rejoining list with a question
> >
> >
> >   Greetings,
> >
> >   I was a member of this list for several years, but quit to have time to
> >   learn other thin

Re: [biofuel] Rejoining list with a question

2004-04-09 Thread Kim & Garth Travis

Greetings Keith,

Well, I have a lot more freedom in my life, these days.  The US finally 
decided to give me a greencard!  It only took them 12 years, but then we 
had the lawyer from...

I see I am going to need to do some research.  Thanks for the warning, as 
my soil here in Texas is definitely hardpan, but, I let the cow spread the 
manure for me here, so I doubt I will be doing much testing, unless a 
friend with a horse wants to make manure bricks for me.  I will read the 
stuff on biogas on your site, then get back to the list with the questions 
I know I will have.

Bright Blessings,
Kim

At 12:01 PM 4/8/2004, you wrote:
>Hi Kim
>
>Good to see you back.
>
> >Keith, I told you I would be back 
>
>I thought it was going to be a year or two, glad you made it sooner.




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Re: [biofuel] Rejoining list with a question

2004-04-09 Thread Kim & Garth Travis

Thanks for the reply.  I will need to learn more about biogas, but I had no 
intention of burning all my manure.  Even if I did burn all the cow manure, 
I would still have all the rabbit, pig and human manure left to make 
compost with.  Since there is just me and my husband when he retires on the 
farm, simplicity is an issue.  As is cost, a steam generator is about $200 
US, how much does it cost to set up biogas?  How much extra work is it?  I 
was thinking of only saving the manure for fuel while the cows are in the 
barn due to bad weather, [We are planning on moving to an area that has 
winter.] so we have to clean it up anyway.  I remember reading that 
temperature had an effect on biogas production, how does it work when 
temperatures are below freezing?  It has been a few years since I looked 
into this, so I will check it again, after the garden is finished being 
planted.

Bright Blessings,
Kim

At 12:32 PM 4/7/2004, you wrote:
>Kim,
>
>When you burn manure you remove the organic matter from the final product 
>and retain only the minerals which can help the soil as an oxidized water 
>soluble fertilizer.  You, since you are operating sustainably, want to 
>retain the organic matter as a component of your soil system I would suspect.
>
>I would suggest that you consider generating biogas using an anaerobic 
>digester to reduce the carbon content by 35 - 50% into biogas containing 
>60-65% methane and then recover the remainder of the carbon solids as 
>compost for your soil.  Soil organic matter is absolutely required to farm 
>sustainability.
>
>This system would allow you to recover energy from the manure in sealed 
>tanks when the odor potential is highest and compost the remainder of the 
>solids aerobically into a soil conditioner.  You also have water to handle 
>which has a very high nutrient content as a supplemental fertilizer and 
>can be used in irrigation.  Work with nature at each level and benefit 
>multiple times.
>
>There has been an absolute revolution in anaerobic digestion over the past 
>five years.  The tankage requirement has dropped to 1/4 the gallons 
>required only five years ago.  The process which previously required 30 - 
>40 days now can be done in 8 - 10 days.
>
>Art Krenzel, P.E.
>PHOENIX TECHNOLOGIES
>10505 NE 285TH Street
>Battle Ground, WA 98604
>360-666-1883 voice
>[EMAIL PROTECTED]
>   - Original Message -
>   From: Kim & Garth Travis
>   To: biofuel@yahoogroups.com
>   Sent: Wednesday, April 07, 2004 7:55 AM
>   Subject: [biofuel] Rejoining list with a question
>
>
>   Greetings,
>
>   I was a member of this list for several years, but quit to have time to
>   learn other things.  I hope all the regulars are doing well, and I hope to
>   get to know all the new people.
>
>   My husband and I own 20 acres in Texas and we are trying to live and farm
>   sustainably.  For now we are on the grid, but hope to change that one
>   day.  We practise alternative building, such as paper adobe and cordwood.
>
>   The question:  This months issue of Backwoods Home Magazine has an 
> article,
>   by Rev. J.D. Hooker, on burning manure.  It states that they get 'somewhat
>   greater heating value than seasoned hardwood.'By using the ashes in 
> the
>   garden, after several years of application have reach a rate of 'more than
>   40% higher' than the garden with either commercial fertilizer or spread
>   manure.  He did not compare it to composted manure, so much testing of his
>   'findings' still needs to be done.  If one can get both heat and 
> fertilizer
>   out of manure, then one could use the manure to fire a wood fuel steam
>   generator and be totally sustainable.
>
>   The author states he got the idea from a friend from Thailand.  There are
>   no flaws mentioned in the article, and the article is only about heat and
>   the garden.  The steam generator is my idea.  This seems to easy and too
>   perfect, what is the flaw that I have missed?
>
>   Bright Blessings,
>   Kim
>
>   Keith, I told you I would be back 
>
>
>
>
>   Biofuel at Journey to Forever:
>   http://journeytoforever.org/biofuel.html
>
>   Biofuels list archives:
>   http://infoarchive.net/sgroup/biofuel/
>
>   Please do NOT send Unsubscribe messages to the list address.
>   To unsubscribe, send an email to:
>   [EMAIL PROTECTED]
>
>
> Yahoo! Groups Sponsor
>   ADVERTISEMENT
>
>
>
>
>
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> a.. To visit your group on the web, go to:
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Re: [biofuel] Rejoining list with a question

2004-04-08 Thread Keith Addison

Hi Kim

Good to see you back.

>Keith, I told you I would be back 

I thought it was going to be a year or two, glad you made it sooner.

>Greetings,
>
>I was a member of this list for several years, but quit to have time to
>learn other things.  I hope all the regulars are doing well, and I hope to
>get to know all the new people.
>
>My husband and I own 20 acres in Texas and we are trying to live and farm
>sustainably.  For now we are on the grid, but hope to change that one
>day.  We practise alternative building, such as paper adobe and cordwood.
>
>The question:  This months issue of Backwoods Home Magazine has an article,
>by Rev. J.D. Hooker, on burning manure.  It states that they get 'somewhat
>greater heating value than seasoned hardwood.'By using the ashes in the
>garden, after several years of application have reach a rate of 'more than
>40% higher' than the garden with either commercial fertilizer or spread
>manure.

What was higher? Yields? You'd want other indicators than that.

Spreading manure is generally not a good technique. (But letting the 
livestock do the spreading can be a very good technique.)

>He did not compare it to composted manure, so much testing of his
>'findings' still needs to be done.

Yes.

>If one can get both heat and fertilizer
>out of manure,

You need to distinguish between "fertilizer" and "nutrients".

>then one could use the manure to fire a wood fuel steam
>generator and be totally sustainable.
>
>The author states he got the idea from a friend from Thailand.  There are
>no flaws mentioned in the article, and the article is only about heat and
>the garden.  The steam generator is my idea.  This seems to easy and too
>perfect, what is the flaw that I have missed?

As Art said, no organic matter. Ash just leaves the minerals and will 
provide nutrients but not soil fertility - it could even harm soil 
fertility. The effect of such treatments depends very much on what 
condition the soil is in to start with. Too much ash on low-O/M 
acidic soils will make matters worse, not better (eg hardpan), and 
not very much might be too much. There's no substitute for humus 
maintenance, and ash can't do that.

Howard developed the Indore compost process in India partly to 
address a shortage of manure caused by its use for cooking fires. 
Composting extended the manure supplies by five times, so there would 
be enough for both the fires and the soil. Weight for weight, compost 
turned out to be much more effective than pure manure, so the effect 
was better than five times. It can be extended even further by adding 
compost made without any manure, from water hyacinth for instance. 
Note "adding" though - for long-term fertility maintenance at least 
some organic matter has to pass through an animal gut on its way back 
to the soil, preferably via more than one species of animal. It's 
also a much better idea to add any ash to the compost rather than to 
the soil.

Art's suggestion of anaerobic digestion for methane production for 
heating is one way, but, as he said, the sludge must then be 
aerobically composted (hot) before applying it to the soil. Generally 
that requires added "browns" (dry, carbonaceous stuff) to correct the 
moisture content and allow sufficient aeration; easiest to use it as 
one component in an ongoing aerobic composting operation. Aerobic 
composting also produces heat of course, which is usually wasted. We 
always have at least one compost pile here that's at 70-75 deg C 
(160-170 deg F). One way to use the heat is via a heat exchanger to 
maintain optimum temperatures in the anaerobic digesters. We've done 
some preliminary work on harnessing composting heat, we'll take it 
further as soon as we have the chance. There's the makings of a good 
integrated system in this, fits in well with rational use of 20 acres 
(or less).

Best

Keith



>Bright Blessings,
>Kim
>
>Keith, I told you I would be back 



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RE: [biofuel] Rejoining list with a question

2004-04-08 Thread Contactos Mundiales

  Mr. Art Krenzel
  Phoenix Technologies

  Dear Art:

  I could not agree more with your statements of fact in regards to
biodigestion.

  Please continue sharing your knowledge and experience with us.

  With best regards,

  Luis R. Calzadilla
  VP Operations
  Fundaci˜n Sugar Cane Research Org.
  Cali, Colombia
  Tel (572) 893-6627
  [EMAIL PROTECTED]
  [EMAIL PROTECTED]




  - Original Message -
  From: Art Krenzel <[EMAIL PROTECTED]>
  To: 
  Sent: Wednesday, April 07, 2004 12:32 PM
  Subject: Re: [biofuel] Rejoining list with a question


  > Kim,
  >
  > When you burn manure you remove the organic matter from the final
product and retain only the minerals which can help the soil as an oxidized
water soluble fertilizer.  You, since you are operating sustainably, want to
retain the organic matter as a component of your soil system I would
suspect.
  >
  > I would suggest that you consider generating biogas using an anaerobic
digester to reduce the carbon content by 35 - 50% into biogas containing
60-65% methane and then recover the remainder of the carbon solids as
compost for your soil.  Soil organic matter is absolutely required to farm
sustainability.
  >
  > This system would allow you to recover energy from the manure in sealed
tanks when the odor potential is highest and compost the remainder of the
solids aerobically into a soil conditioner.  You also have water to handle
which has a very high nutrient content as a supplemental fertilizer and can
be used in irrigation.  Work with nature at each level and benefit multiple
times.
  >
  > There has been an absolute revolution in anaerobic digestion over the
past five years.  The tankage requirement has dropped to 1/4 the gallons
required only five years ago.  The process which previously required 30 - 40
days now can be done in 8 - 10 days.
  >
  > Art Krenzel, P.E.
  > PHOENIX TECHNOLOGIES
  > 10505 NE 285TH Street
  > Battle Ground, WA 98604
  > 360-666-1883 voice
  > [EMAIL PROTECTED]






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Re: [biofuel] Rejoining list with a question

2004-04-07 Thread Art Krenzel

Kim, 

When you burn manure you remove the organic matter from the final product and 
retain only the minerals which can help the soil as an oxidized water soluble 
fertilizer.  You, since you are operating sustainably, want to retain the 
organic matter as a component of your soil system I would suspect.

I would suggest that you consider generating biogas using an anaerobic digester 
to reduce the carbon content by 35 - 50% into biogas containing 60-65% methane 
and then recover the remainder of the carbon solids as compost for your soil.  
Soil organic matter is absolutely required to farm sustainability.  

This system would allow you to recover energy from the manure in sealed tanks 
when the odor potential is highest and compost the remainder of the solids 
aerobically into a soil conditioner.  You also have water to handle which has a 
very high nutrient content as a supplemental fertilizer and can be used in 
irrigation.  Work with nature at each level and benefit multiple times.

There has been an absolute revolution in anaerobic digestion over the past five 
years.  The tankage requirement has dropped to 1/4 the gallons required only 
five years ago.  The process which previously required 30 - 40 days now can be 
done in 8 - 10 days.

Art Krenzel, P.E.
PHOENIX TECHNOLOGIES
10505 NE 285TH Street
Battle Ground, WA 98604
360-666-1883 voice
[EMAIL PROTECTED]
  - Original Message - 
  From: Kim & Garth Travis 
  To: biofuel@yahoogroups.com 
  Sent: Wednesday, April 07, 2004 7:55 AM
  Subject: [biofuel] Rejoining list with a question


  Greetings,

  I was a member of this list for several years, but quit to have time to 
  learn other things.  I hope all the regulars are doing well, and I hope to 
  get to know all the new people.

  My husband and I own 20 acres in Texas and we are trying to live and farm 
  sustainably.  For now we are on the grid, but hope to change that one 
  day.  We practise alternative building, such as paper adobe and cordwood.

  The question:  This months issue of Backwoods Home Magazine has an article, 
  by Rev. J.D. Hooker, on burning manure.  It states that they get 'somewhat 
  greater heating value than seasoned hardwood.'By using the ashes in the 
  garden, after several years of application have reach a rate of 'more than 
  40% higher' than the garden with either commercial fertilizer or spread 
  manure.  He did not compare it to composted manure, so much testing of his 
  'findings' still needs to be done.  If one can get both heat and fertilizer 
  out of manure, then one could use the manure to fire a wood fuel steam 
  generator and be totally sustainable.

  The author states he got the idea from a friend from Thailand.  There are 
  no flaws mentioned in the article, and the article is only about heat and 
  the garden.  The steam generator is my idea.  This seems to easy and too 
  perfect, what is the flaw that I have missed?

  Bright Blessings,
  Kim

  Keith, I told you I would be back 




  Biofuel at Journey to Forever:
  http://journeytoforever.org/biofuel.html

  Biofuels list archives:
  http://infoarchive.net/sgroup/biofuel/

  Please do NOT send Unsubscribe messages to the list address.
  To unsubscribe, send an email to:
  [EMAIL PROTECTED] 


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[biofuel] Rejoining list with a question

2004-04-07 Thread Kim & Garth Travis

Greetings,

I was a member of this list for several years, but quit to have time to 
learn other things.  I hope all the regulars are doing well, and I hope to 
get to know all the new people.

My husband and I own 20 acres in Texas and we are trying to live and farm 
sustainably.  For now we are on the grid, but hope to change that one 
day.  We practise alternative building, such as paper adobe and cordwood.

The question:  This months issue of Backwoods Home Magazine has an article, 
by Rev. J.D. Hooker, on burning manure.  It states that they get 'somewhat 
greater heating value than seasoned hardwood.'By using the ashes in the 
garden, after several years of application have reach a rate of 'more than 
40% higher' than the garden with either commercial fertilizer or spread 
manure.  He did not compare it to composted manure, so much testing of his 
'findings' still needs to be done.  If one can get both heat and fertilizer 
out of manure, then one could use the manure to fire a wood fuel steam 
generator and be totally sustainable.

The author states he got the idea from a friend from Thailand.  There are 
no flaws mentioned in the article, and the article is only about heat and 
the garden.  The steam generator is my idea.  This seems to easy and too 
perfect, what is the flaw that I have missed?

Bright Blessings,
Kim

Keith, I told you I would be back 




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