Biogas and biogas power methanogenic

Renewable energies except solar electric or thermal (seeforums dedicated below): wind turbines, energy from the sea, hydraulic and hydroelectricity, biomass, biogas, deep geothermal energy ...
Christophe
Moderator
Moderator
posts: 79121
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973

Biogas and biogas power methanogenic




by Christophe » 20/09/06, 22:06

Following many questions about biogas and the fact of being able to use it for its energy autonomy, here are some small estimation calculations.

Based on this documents of the Ademe: https://www.econologie.com/agriculture-e ... -2872.html

On page 5 and 19, there are the "input-energy" balances of the 2 installations.

Take as an example the 2ieme page 19:

It takes 2.542 Tons (of which 1264 T is purely liquid or 50% of solid matter) for 156.996 m3 of biogas having produced: 313.000 kwhe and 626.000 kwhth with an overall efficiency of 80 (elec + heat) we thus obtain 1 kwhe of "gross" energy for 174 m000.

Either a biogas ICH of the order of 7,5 kwh (1 m3 of natural gas or 1L of fuel oil = approximately 10 kwh) and therefore 0,75 L of fuel oil.

But it takes 2542/157 = 16,2 kg of "input material" to make 1m3 of biogas or 0,75L of fuel oil.

It is therefore roughly 16,2 / 0,75 = 21,6 kg 50% liquid (at least) to make 1 L.

By approximating and to have an order of value, it is necessary 20 kg of material (50% of liquid) to make 1L of fuel oil.

The "methanogenic" power increases with the% of dry matter, on the other hand I do not know in what proportions (the grass, rich in cellulose, has one of the best methanogenic power).

Whatever the order of magnitude is: Depending on the material, between 10 and 20Kg material must be used to make the equivalent of one L of fuel oil under optimum yield conditions (bacteriology and ideal T ° conditions, agitation, ph ... etc). We quickly understand that this is not the solution that will replace the annual 2000L of a house ... unless you have 20 40 tons of biomethanisable material so a VERY large garden or a farmer friend ...

Here are some methanogenic powers recovered on the net and from some design offices:

in M3 biogas / T of Mat. Brute

Used grease 800
531 food residues
530 Treated Seeds
485 corn silo drying waste
400 Bleaching Lands
395 flotation greases
395 soybean / margarine oil
375 fish oil
373 Spring Rafts
327 Fall Rafts
Canning companies effluent 270
230 Fines and Spathes
225 Molasses
Corn silage 195
195 corn straws
175 Alcohol
Green waste (mowing) 85
85 Steroids
75 distillation residues
Cattle manure 70
Drum brews 60
42 hen manure
25 cattle manure
Palmiped manure 17
15 piglet manure
Pig manure 12
12 Gestation Sow Manure

of course, these are rates for standard products. To get a better idea, you have to balance the MS / MB and MO / MS rates.
Last edited by Christophe the 19 / 08 / 08, 23: 15, 6 edited once.
0 x
Christophe
Moderator
Moderator
posts: 79121
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 20/09/06, 22:11

Last edited by Christophe the 28 / 10 / 11, 09: 39, 1 edited once.
0 x
User avatar
Polo
I understand econologic
I understand econologic
posts: 86
Registration: 17/08/06, 19:33
Location: Nancy and Metz




by Polo » 22/09/06, 12:42

Interresting. But anyway the energy that can save us, I think, does not exist. It is necessary to use all the renewable energies: a little of everything and then also to stop to ruin everything. Anaerobic digestion, in your opinion could take what%? Is there another solution that could supplement this by replacing the fuel oil?
0 x
"I fear nothing, I hope for nothing, I am free" Nikos kazansakis
Christophe
Moderator
Moderator
posts: 79121
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 22/09/06, 13:55

Ben you just said: the future will be a plume of renewable energy depending on local resources (sun, wood ...) ...

Personally I find the association wood-solar more and more interesting and the heat pump (nuclear disguised) less and less ...

Difficult to estimate a% for biogas ... it will depend mainly on the political will of the region in question ... but 10 to 15% (raw energy) seems to be an absolute limit in the very long term that it will be hard to push back ... But that's just my vision of things ...
0 x
User avatar
Polo
I understand econologic
I understand econologic
posts: 86
Registration: 17/08/06, 19:33
Location: Nancy and Metz




by Polo » 23/09/06, 15:56

Ok, thanks for the response. Indeed not huge ... but hey ... I can not wait to have my home because I'm renting so I can not do anything. In addition the heating is electric, the cooking plates too and cumulus the same !!!!! And it's not photovoltaic ...
To return to the methanisation, in Germany I saw that a whole village consumed the dung of their cow. Finally it's not another story but another country ...
0 x
"I fear nothing, I hope for nothing, I am free" Nikos kazansakis
Targol
Econologue expert
Econologue expert
posts: 1897
Registration: 04/05/06, 16:49
Location: Bordeaux region
x 2




by Targol » 23/09/06, 16:29

Polo wrote:(...) in Germany I saw that a whole village was consuming the dung of their cow.


Pouahhh, they have funny tastes in Germany. Personally, rather than cow dung, I prefer goat dung !!!
: Lol: : Lol: : Lol:
0 x
"Anyone who believes that exponential growth can continue indefinitely in a finite world is a fool, or an economist." KEBoulding
Christophe
Moderator
Moderator
posts: 79121
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 25/09/06, 16:34

Biogas production:
1 UGB (livestock unit) produced 1-2 m³ biogas / day
1 ton of fresh pork slurry product 25 m³ biogas
1 ton of used grease produced 800 m³ of biogas

source: https://www.econologie.com/file/technolo ... llonie.pdf

Some more specific informations:
http://www.solagro.org/site/005.html

Biogas waste sent to landfill (do a methanogen research in the .pdf): https://www.econologie.com/file/technolo ... clip_5.pdf
0 x
User avatar
Woodcutter
Econologue expert
Econologue expert
posts: 4731
Registration: 07/11/05, 10:45
Location: Mountain ... (Trièves)
x 2




by Woodcutter » 25/09/06, 18:12

Christophe wrote:[...] and heat pumps (nuclear disguised) less and less ... [..]
You can feed it to something other than the atom your pump, nan?
0 x
"I am a big brute, but I rarely mistaken ..."
User avatar
Woodcutter
Econologue expert
Econologue expert
posts: 4731
Registration: 07/11/05, 10:45
Location: Mountain ... (Trièves)
x 2




by Woodcutter » 25/09/06, 18:17

A question that I asked myself and for which I have no answer: admitting that the extraction of energy from biomass is developing, what will be the influence on ecosystems of excessive "recovery" of said biomass?

For example, imagine a cultivated field on which, after harvesting the food product, another machine is passed that recovers 99% biomass for example (stems and roots)?

I do not know if the agronomic research lab and the ADEME have asked the question?
0 x
"I am a big brute, but I rarely mistaken ..."
Christophe
Moderator
Moderator
posts: 79121
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 25/09/06, 18:30

Woodcutter wrote:You can feed it to something other than the atom your pump, nan?


Yes of course, but to power a motor from 1 to 5 Kw with solar power and buffer batteries you have to have a lot of "courage" ...
0 x

 


  • Similar topics
    Replies
    views
    Last message

Back to "hydraulic, wind, geothermal, marine energy, biogas ..."

Who is online ?

Users browsing this forum : No registered users and 278 guests