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)

906229 comment(s)

Edwardtroup 02.01.2022

<a href=https://private-service.best/detective-and-hacker-service.html>best hackers</a> - hackerslist, hacking order

CikutaKiz 02.01.2022

<a href=http://prozmk.ru/novosti/novinskiy-zmk-prodolzhaet-konsolidatsiyu-otrasli-metallostroitelstva/>нзмк новинский завод металлоконструкций</a>

Michaeltatty 29.12.2021

<a href=https://stavkalavka.pro/#osnovnye-kontory-sng.31>Букмекерские конторы СНГ обсуждение</a> - Аккаунты платежных систем, Вопросы и ответы по вилках

Ezrolfrirm 29.12.2021

qgainst minocin rheumatoid arthritis
humanlike minopciny=only one provider+ definition-minocin
<a href="http://minocin100mg.com/#">does minocin work for acne
</a> - minocin 100mg ingredients
http://minocin100mg.com/# - minocin 50 mg tablets
indahmenurut minocin 100mg ingredients

WillieCah 26.12.2021

<a href=https://xn----7sbbajqthmir8bngi.xn--p1ai/artlegia/>артлегиа купить</a> - купить актерма, ремдеформ продать

Kevinsworn 25.12.2021

check my reference <a href=https://coinlet.io/>cryptocurrency loans</a>

burenoktut 23.12.2021

Вы видели спортивную площадку во дворе без турников? Мы тоже не видели. Турники – обязательный атрибут уличных спортивных площадок. Подтягивание сильно развивает мышцы рук, плеч, груди и спины.Купить на складе:есть.
<a href=http://www.sporthappy.com.ua/Trenazheryi_dlya_ulitsyi> купит уличные тренажеры</a> супер акция от широкоизвестного завода-производителя игровых для детей и взрослых дворовые турники для улицы . Производитель песочниц для детей Спортбиз доставку осуществляет к Вам домой по всей Украине : Житомир , Ивано-Франковск , Луцк , Одесса , Ровно , Херсон, Хмельницкий курьерской компанией Гюнсел или транспортом завода без предоплаты в течении 1-4 дней после заказа. Стоимость доставки 1500 грн.

ace 21.12.2021

<a href="https://ssylka-gidra.hydra-ssylka-onion.com">как зайти на hydra</a>

Ronaldpharp 20.12.2021

The spike in consumer prices that left inflation at a four-decade high of 6.8% in November prompted the Federal Reserve to dramatically shift its approach as it eyes earlier and faster interest rate hikes.

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