About Biogas

Biogas in general

Useful information on biogas from FAB industry

Biogas is a gaseous mixture composed of methane (40-75 %), carbon dioxide (25-55 %) and traces gases (0-10 %). In anaerobic and dark environment organic material is metabolized by means of microorganisms (anaerobic digestion – AD).

Biogas is also well known as marsh gas, sludge gas, landfill gas or digester gas.
The term “Biogas” concerns the fermentation of waste materials or of renewable materials, respectively. Biogas is generated as a metabolite by methane bacteria.

The following picture shows the industrial process scheme of a biogas plant (AD plant):

 

How can Biogas be produced?

The degradation of biopolymers to Biogas and its components is done by microorganisms (in the digester) in four interdependent steps:

1. Hydrolysis:

In the first step water-insoluble biopolymers are fractionalized into basic monomer modules or in other dissoluble fragments. This reaction is done by facultative anaerobic microorganisms and disaggregated via exoenzymes.

2. Acidification:

The acidification takes place at the same time as the hydrolysis step (1st step). The low molecular compounds, which were built in the first step, are implemented in short-chain organic acids, alcohols, H2 and CO2.

3. Acetogenesis phase:

In the third step organic acids and alcohols are transformed by obligate H2-building acetogenic microorganisms to acetate/acetic acid, H2 and CO2, respectively.

4. Methanogenis phase:

Strictly anaerobic methane bacteria build methane and CO2 from acetic acid (~ 70 %) as well as from CO2 and H2 (~ 30%). For methane bacteria these reactions are an important energy source.

Biogas is made from…

Biogenic substrates like liquid manure, sewage, maize, grass, sunflower, biodegradable waste, slaughterhouse waste, vegetable and fruit waste,…..

How can Biogas be used?

There are various possibilities for the utilisation of “Biogas”.

  • electricity generation
  • production of heat
  • fuel production
  • supply in natural gas network

The pros and cons of Biogas:


Pros:

  • green energy production (electricity, heat)
  • substitute of fossil fuels
  • reduction of greenhouse gas emissions
  • reduction of disposal costs (biodegradable waste as substrate)
  • subsidies by the green energy law
  • energy savings (covering of own energy demand)
  • saving of chemical fertilizer (closing of nutrient cycle)
  • increase of plants tolerance
  • CO2 neutral energy production

Cons:

  • possibly unpleasant odor made of substrates
  • dependence on substrate price (if substrates are bought)
  • high Capital investment costs

 

References:

Biogas Research and Consulting groupe, http://www.codigestion.com/www.codigestion.com (accessed 16 September 2013)

894162 comment(s)

Joeweign 09.07.2020

<a href="https://retina.us.org/">buy retin a</a> <a href="https://malegra.us.org/">malegra 180 on line</a> <a href="https://nexium.us.org/">nexium prescription cost</a> <a href="https://cialisprice.us.org/">buy cialis</a> <a href="https://domperidone.us.com/">motilium domperidone 10mg</a> <a href="https://flomax.us.com/">buy flomax</a> <a href="https://chloroquine.us.org/">chloroquine tablets buy online</a> <a href="https://hydroxychloroquine.us.com/">hydroxychloroquine tablets</a>

Jimweign 09.07.2020

<a href="https://azithromycin.us.org/">azithromycin medicine 500 mg</a> <a href="https://cialisprice.us.org/">cialis australia over the counter</a> <a href="https://amitriptyline24.com/">amitriptyline 10mg</a> <a href="https://prednisolone.us.org/">prednisolone brand name australia</a> <a href="https://prazosin.us.com/">prazosin for ptsd</a> <a href="https://lipitor.us.org/">buy generic lipitor canada</a> <a href="https://malegra.us.org/">malegra for sale</a> <a href="https://trazodonesale.com/">medicine trazodone</a>

Ivyweign 09.07.2020

<a href="https://domperidone.us.com/">purchase motilium</a> <a href="https://prazosin.us.com/">buy prazosin</a> <a href="https://cephalexin365.com/">keflex 500</a> <a href="https://attarax.com/">buy atarax tablets</a> <a href="https://hydroxychlorothiazide.com/">buy hydrochlorothiazide</a> <a href="https://bupropion365.com/">bupropion hcl sr</a> <a href="https://motrin.us.com/">order motrin</a> <a href="https://prednisolone.us.org/">rx from canada prednisolone</a> <a href="https://tamoxifenpct.com/">tamoxifen tablets</a> <a href="https://lipitor.us.org/">generic lipitor</a> <a href="https://singulair.us.com/">buy singulair tablets</a> <a href="https://priligy.us.com/">where to buy priligy</a> <a href="https://cialisprice.us.org/">cialis price</a> <a href="https://ivermectin.us.org/">ivermectin 4 mg</a> <a href="https://flomax.us.com/">flomax prescription</a> <a href="https://retina.us.org/">buy retin-a gel</a> <a href="https://hydroxychloroquinecv.com/">plaquenil buy online usa</a> <a href="https://nexium.us.org/">nexium 20mg india</a> <a href="https://chloroquinaralen.com/">chloroquine mexico</a> <a href="https://wellbutrin.us.org/">wellbutrin in mexico</a>

Amyweign 08.07.2020

<a href="https://prednisolone.us.org/">prednisolone 5mg buy online uk</a>

Jimweign 08.07.2020

<a href="https://azithromycin.us.org/">how to buy azithromycin</a> <a href="https://chloroquine.us.org/">chloroquine malaria</a> <a href="https://proscar.us.com/">proscar 5mg</a> <a href="https://cialisprice.us.org/">generic cialis lowest price</a> <a href="https://hydroxychloroquine.us.com/">buy hydroxychloroquine</a> <a href="https://malegra.us.org/">malegra dxt</a> <a href="https://wellbutrin.us.org/">250 mg wellbutrin</a> <a href="https://priligy.us.com/">priligy buy</a>

Janeweign 08.07.2020

<a href="https://zovirax.us.com/">zovirax cream canada</a>

Paulweign 08.07.2020

<a href="https://motrin.us.com/">motrin 600mg tablet</a> <a href="https://hydroxychloroquine.us.com/">buy hydroxychloroquine sulfate</a> <a href="https://ivermectin.us.org/">cost of ivermectin medicine</a> <a href="https://prazosin.us.com/">medicine prazosin 1 mg capsule</a> <a href="https://zovirax.us.com/">buy zovirax</a>

Sueweign 08.07.2020

<a href="https://hydroxychloroquinecv.com/">hydroxychloroquine for sale</a> <a href="https://metformin.us.org/">metformin hcl 500</a> <a href="https://ivermectin.us.org/">buy ivermectin</a> <a href="https://flomax.us.com/">flomax for kidney stones in females</a> <a href="https://cephalexin365.com/">cephalexin 250 capsule</a> <a href="https://attarax.com/">atarax 25</a> <a href="https://amitriptyline24.com/">amitriptyline 70 mg</a> <a href="https://hydroxychlorothiazide.com/">hydrochlorothiazide 12.5 mg capsule</a> <a href="https://zovirax.us.com/">buy zovirax</a> <a href="https://priligy.us.com/">priligy tablets over the counter</a>

Add comment

In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo.




* - required field

CAPTCHA image for SPAM prevention If you can't read the word, click here.

*

DOWNLOAD NOW !

The sole responsibility for the content of this webpage lies with the authors. It does not necessarily reflect the opinion of the European Union. Neither the EACI nor the European Commission are responsible for any use that may be made of the information contained therein