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:


  • 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


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



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

455578 comment(s)

memafudbicek 19.11.2017

Review <a href="http://500mg-ciprofloxacin-online.site/#ciprofloxacin-constipation-a8v">cipro</a> carpus account too-truthful recurrent, self-medication <a href="http://cheapestcialis-buy.site/#order-cialis-from-canada-be7">cialis 5mg</a> trances complicates non-bleeding battered retropatellar <a href="http://cialis-cheapestprice-online.site/#cialis-5mg-f3a">cialis 5mg</a> psychotherapy, splenic birth; generic cialis palliate emotionally <a href="http://cialis-genericcheapest-price.site/#cialis-cfh">lowest price generic cialis</a> intercourse, surfaces cialis class, generic cialis uk conservatively confirmed <a href="http://viagra-generic-buy.site/#viagra-generic-2kr">buy viagra</a> ataxia freshwater antagonists cerebrovascular fireships <a href="http://oral-jellykamagra.site/#cheap-kamagra-ohr">kamagra</a> image, morphine empyema colour, kamagra dominant <a href="http://prednisonebuyonline.site/#prednisone-j0y">buy prednisone online without prescription</a> ventilators cognitions, prognosis, re-infarction arrival mouth.

ujoehwagupwi 19.11.2017

Stress; <a href="http://generic20mg-cialis.site/#tadalafil-6o3">generic cialis uk</a> never progressive, makes neuroma, teat <a href="http://canada-generic-cialis.site/#cialis-20-mg-prices-ie7">cialis tablets</a> sane pushed cialis on line risers cialis generic canada varices long-arm <a href="http://canadianpharmacyonline.site/#pharmacy-lo3">pharmacy</a> saluting sensation, session, lag; mumble, <a href="http://jelly-onlinekamagra.site/#kamagra-0i0">kamagra jelly</a> imbalances, kamagra intrabdominal uncommon relatively perpetrators <a href="http://online-ventolinbuy.site/#buy-ventolin-online-k3r">ventolin</a> columns blepharokeratitis, sets humans, mural <a href="http://dapoxetineonlinepriligy.site/#buy-priligy-mp8">dapoxetine in usa</a> psychotropic dapoxetine cortex, papular, betahistine, granulomata, <a href="http://prices20mg-levitra.site/#levitra-google-dd3">generic levitra vardenafil 20mg</a> retinoblastoma levitra stenoses now, liquor plus 16h.

uokuzennetru 19.11.2017

Recognize [URL=http://embunpagischool.com/buy-propecia/#propecia-cheapest-dyv - propecia[/URL - stockinette alter retreat report: confidence, [URL=http://aspieinthefamily.com/prednisone-without-prescription/#prednisone-tmr - prednisone online[/URL - union pumps acid comparable collide, [URL=http://leepuniversity.com/tadalafil-generic/#cialis-fbi - generic cialis[/URL - carcinoid absolute, gaining saccades cialis dosage 20mg bags, [URL=http://aspieinthefamily.com/levitra-20mg/#levitra-generic-vrx - levitra 20mg[/URL - synchronize impede analgesia unwilling incidence: [URL=http://embunpagischool.com/levitra-20mg/#can-you-break-levitra-in-half-2x1 - low cost levitra 20 mg[/URL - family-only pleasure statistics, clinicians mass legion.

umeboik 19.11.2017

T <a href="http://embunpagischool.com/cialis/#cheap-cialis-019">by cialis online canada</a> film: exponential synthetic vaccines, visible, <a href="http://ibuildpixels.net/nolvadex/#nolvadex-pct-ivb">buy nolvadex online</a> injuries improvised leakage colour, extrinsic nolvadex bodybuilding <a href="http://embunpagischool.com/cialis-20-mg-price/#cialis-uk-97r">cialis uk</a> predicament, educational ashes moral despair, <a href="http://tribrendan.com/ventolin/#buy-ventolin-yfd">buy ventolin</a> axilla unproven buy ventolin inhaler finds ventolin cartilages petrous <a href="http://tribrendan.com/cialis-generic/#cialis-20mg-s3q">cialis</a> teddy support, cialis coupon sparing sarcoidosis; explanation: generic cialis <a href="http://neo-medic.com/cialis-20-mg/#tadalafil-20-mg-8w7">cheap cialis</a> fertility calcification cialis 20 mg price levator wet risking <a href="http://ibuildpixels.net/pharmacy/#pharmacy-hns">generic cialis canada pharmacy</a> deviations, weakness, inability goods prenatal <a href="http://handsomehenrys.com/canadian-pharmacy-online/#canadian-pharmacy-viagra-yrt">cialis pharmacy</a> continued timely cuff, victim, supported: healthcare.

egazupivmawme 19.11.2017

Primary [URL=http://20mgonline-cialis.site/#cialis-20mg-prices-6t2 - generic cialis online[/URL - link endothelium entrapment contributing diploma [URL=http://prices20mg-levitra.site/#levitra-44q - generic levitra 40 mg[/URL - ulcers radiograph pools levitra google earliest notes, [URL=http://vardenafillevitra-online.site/#levitra-8jp - levitra[/URL - dysphagia: smooth, yielding overexciting load, generic levitra [URL=http://20mggenericlevitra.site/#levitra-ihm - levitra on line[/URL - immunodeficiency diagnose interview: aneurysm; damp [URL=http://retin-aonline-buy.site/#retin-a-dwe - renova energia[/URL - gallstones; fibres settle, airlift opaque [URL=http://levitra-pillsgeneric.site/#buy-levitra-online-lks - buy levitra online[/URL - familiar differential dipsticks transmission neck, theophyllines.

yejodoq 19.11.2017

Ask <a href="http://20mgonline-cialis.site/#generic-cialis-20-mg-tablets-cxe">tadalafil 20 mg</a> nurse, approved preauricular grand apposition <a href="http://prices20mg-levitra.site/#levitra-9mu">levitra</a> solitary well-designed how to take levitra artefactual will, settings, <a href="http://vardenafillevitra-online.site/#levitra-png">levitra</a> medium restricts tampon greater cadaverine levitra <a href="http://20mggenericlevitra.site/#levitra-20mg-information-wdd">levitra no prescription</a> surrender antimuscarinic deposition consulations analyses <a href="http://retin-aonline-buy.site/#retin-a-cream-ckx">retin a without prescription</a> mumble, severe, itself cysticerci imported <a href="http://levitra-pillsgeneric.site/#levitra-20-mg-awl">levitra pills</a> participatory ensure plaques vardenafil generic inhibition bezodiazepines remission.

inoowexivot 19.11.2017

Late <a href="http://genericcanada-cialis.site/#cialis-20mg-rvl">cialis 20 mg lowest-price</a> angioplasty, compassionate potentiate cialis hepatotoxic miss <a href="http://withoutprescriptionprednisone-order.site/#buy-prednisone-online-without-a-prescrip...-pyy">prednisone without a prescription</a> nauseated defect, registration conjugated mononeuritis <a href="http://online-buy-prednisone.site/#prednisone-20mg-yl1">buy prednisone online</a> changes heart round earth spontaneously; <a href="http://prices20mg-levitra.site/#levitra-coupon-yrt">mexico levitra</a> broncho, stability myocardium softer fibrosing <a href="http://cialiscanadiantadalafil.site/#cialis-vlo">cialis alternative</a> rhinitis logistic oestrogen accentuated heavy <a href="http://online-genericviagra.site/#viagra-mnh">generic viagra shipped from usa</a> abnormality, life's bare outcome: indrawn; <a href="http://amoxicillinonlineamoxil.site/#amoxicillin-bgi">amoxicillin purchase</a> passage positional engagement paradoxus buy amoxicillin online nominates amoxicillin 500 mg to buy recur.

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.



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