[Gasification] [Digestion] Karve connecting Biochar and Biogas

[GF]

I seem to remeber the filter beds laid down with "coke"derived from the GAS WORKS to enhance the bacterial action on sewage.It is interesting to postulate the possibilities of testing other ziolite qualities in other materials than char. The reaction of bacteria over a nutriant soaked porous media especially when it is soaked with recirculated  liquids from behind the scum board which retains the larger solids. This raises a question I have long pondered. Is microbial action accelerated by pressure. If this reaction is contained within a pressure vessel? For instance :
what sort of result could we expect if this bacterial action took place at say 9000lb per sq inch, give or take a few atmospheres. I have heard that beer bottles explode if unchecked during fermentation, is the generation of gasses increased with pressure forcing the nutrient down the throat of the  microbes  as it were?
GF

 
-----Original Message-----
From: back40 <back40 at gmail.com>
To: paul.harris <paul.harris at adelaide.edu.au>; Discussion of biomass pyrolysis and gasification <gasification at lists.bioenergylists.org>
Sent: Thu, Oct 6, 2011 4:01 pm
Subject: Re: [Gasification] [Digestion] Karve connecting Biochar and Biogas


I wonder if this is relevant:
ttp://newscenter.lbl.gov/feature-stories/2011/10/05/soil-carbon/
"Michael Schmidt, a co-author of the Nature paper from the University
f Zurich, has already found that biochar, which is charred material
rom wildfires or a kiln, is not stable as previously believed. It
lso readily decomposes. Some scientists had believed that biochar
ould be used to sequester carbon, but this may not be the case."
On 10/6/11, Paul Harris <paul.harris at adelaide.edu.au> wrote:
 G’day All,



 For the “non digesters” in particular some anaerobic digesters are packed
 with plastic rings/balls or other media to provide a surface for bacteria,
 so what Dr Karve has possibly done (I am guessing here) is provided “homes”
 for a lot more bacteria so they are not washed out. This is good for
 solutions but not so good if there are solids in the waste stream.



 The other possibility is that the extra carbon has restored the C:N ratio.



 Could you give more details of what you did Dr Karve, if it is possible (I
 understand you may have some commercial interests to protect)?



 Happy digesting,

 HOOROO



 Mr. Paul Harris, Room 202 Charles Hawker Building, Faculty of Sciences, The
 University of Adelaide,

 Waite Campus, PMB 1, Glen Osmond SA 5064 Ph  : +61 8 8303 7880      Fax  :
 +61 8 8303 4386

 Roseworthy Campus, Ph  : +61 8 8303 7929

 mailto:paul.harris at adelaide.edu.au
 http://www.adelaide.edu.au/directory/paul.harris



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 From: digestion-bounces at lists.bioenergylists.org
 [mailto:digestion-bounces at lists.bioenergylists.org] On Behalf Of
 rongretlarson at comcast.net
 Sent: Thursday, 6 October 2011 1:35 PM
 To: Anand Karve; gasification at lists.bioenergylists.org; Discussion of
 biomass; biochar; digestion
 Subject: [Digestion] Karve connecting Biochar and Biogas



 AD (cc four lists):

     I have not previously seen the connection between Biochar and Biogas
 that you described (below) today on the gasification list.     In
 particular, you say you ".. filled the digester
 with charcoal, my system accepted three times the normal daily input
 and produced three times as much gas."
 I think what you describe can be a very powerful push for both Biochar and
 Biogas.  Can you describe what you have learned a little more?

      I know too little of digesters, so this is not clear.  I think I know
 your kitchen-sized inverted "barrel" gas chamber and think I understand the
 last part - of getting three times as much gas in the next 24 hours or less
 (and 3X is a huge change!).   Does the idea of accepting three times more
 mean essentially the same thing?  I would think you could "jam" any amount
 in;  what limits acceptance?

     Do you agree that this is very important new information?  Do you agree
 this information could help speed up both technologies?  I believe there is
 wide agreement that Biochar benefits from added biological material (that
 would not be long-lived from a sequestration perspective).  Is there any
 reason to think that the traditional use of digester effluent for ag
 improvements will be in any way harmed if it is continued through the
 addition of carbon-negative Biochar?  Should this not promote sales of your
 charcoal-making stoves?

    If I haven't asked quite the right question - please answer the right
 one.  And congratulations on learning and reporting this.

 Ron



- 
egards,
ary Jones
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