Biogas typically refers to a gas produced by the biological breakdown of organic matter in the absence of oxygen. Organic waste such as dead plant and animal material, animal dung, and kitchen waste can be converted into a gaseous fuel called biogas. Biogas originates from biogenic material, for example through anerobic digestion, and is a type of biofuel.

• Frank Bengelsdorf

  Biogas plants in Germany and India

  Can you watch the following three videos and share your thoughts? 1) A Biogas plant typical for Germany from the company bioconstrcuct http://www.youtube.com/watch?v=3UafRz3QeO8 A Biogas plant inCan you watch the following three videos and share your thoughts? 1) A Biogas plant typical for Germany from the company bioconstrcuct http://www.youtube.com/watch?v=3UafRz3QeO8 A Biogas plant in India village. http://www.youtube.com/watch?v=rk_baOYHHdw And a Biogas plants in India city pune http://www.youtube.com/watch?v=BGSl72xZHNk Frank

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    Paul Harris replied

    G'day Nick, Your English is OK - it was details like Argentina that I missed. You have hit the nail on the head with "large" for commercial enterprises and "small" for domestic - it's definately NOTG'day Nick, Your English is OK - it was details like Argentina that I missed. You have hit the nail on the head with "large" for commercial enterprises and "small" for domestic - it's definately NOT "one size fits all"! Happy digesting, HOOROO

    19 days ago
• F. L.

  Human feces as biogas source

  Can we use human feces to produce biogas? What are the pros and cons?

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    Nick Martin replied

    Hi! You may have to use a process to clean from pathogenic bacteria those feces. That´s possible using heat water at about 70 ºC in a crosscurrent system. Good Luck!

    22 days ago
• Bernhard Quirbach

  Rice and wheat straw as a biogas source

  What are your experiences for using straw as a biogas source?

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    Dr.B.k Chakravarthy replied

    The bio reactors are at nRT ( no need for warming) and closed with anaerobic bacteria for proper digestion of various waste matter and for enhanced gas production with reduction of high levels ofThe bio reactors are at nRT ( no need for warming) and closed with anaerobic bacteria for proper digestion of various waste matter and for enhanced gas production with reduction of high levels of COD/BOD to very low values.The R&D work on fodder waste is applicable where it is abundant only

    23 days ago
• Behzad Zare

  Source separating to increase biogas production

  Do anyone have an idea about source separating the municipal wastewater sludge to increase biogas generation in anaerobic digestion process. I mean separating raw and activated sludge
• Pavel Pšenička

  Anaerobic biodegradability of bioplastics

  Hi, do any of you have some experience with anaerobic biodegradability of bioplastics?

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    Lopo Carvalho replied

    Hi, I'am working in a project on development of biodegradable plastics for use in agricultural activities (AGROBIOFILM). I did an exploratory anaerobic batch assay, however the results weren´t thatHi, I'am working in a project on development of biodegradable plastics for use in agricultural activities (AGROBIOFILM). I did an exploratory anaerobic batch assay, however the results weren´t that interesting. Do you use any kind of international standard to perform the laboratory assays?

    Mar 30, 2012
• Abdelhak Benarab

  Green electricity

  How can we obtain biogas from organic waste and transform it into green electricity for example in a farm (25 cows)

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    Paul Harris replied

    You may get some help from http://biogas.wikispaces.com/ or http://www.adelaide.edu.au/biogas/, there is also an Anaerobic Digestion Discussion List atYou may get some help from http://biogas.wikispaces.com/ or http://www.adelaide.edu.au/biogas/, there is also an Anaerobic Digestion Discussion List at http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org and several groups on LinkedIn

    Jan 10, 2012
• Callum Henderson

  Biogas and detergent

  If human faeces is being used in biogas production what do people use to clean the toilets.

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    Callum Henderson replied

    Many thanks for your help!

    Jul 28, 2011
• Dianna Achando

  human waste biogas as a business idea

  Hey everyone, I'm very unexperienced in this sector but very interested. Has anyone tried the bottling and selling of the biogas (like done with natural gas?). Im thinking of doing this as aHey everyone, I'm very unexperienced in this sector but very interested. Has anyone tried the bottling and selling of the biogas (like done with natural gas?). Im thinking of doing this as a business and would like your input. stay safe Dee

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    Pavel Pšenička replied

    Hi David, this "technology" was developed much earlier. You can find lots of useful information on the web pages of The Ashden Awards, which is focused also on biogas in developing countriesHi David, this "technology" was developed much earlier. You can find lots of useful information on the web pages of The Ashden Awards, which is focused also on biogas in developing countries http://www.ashdenawards.org/biogas In The UK there is NGO called Community Composting Network, which is also interested in small-scale biogas plants and they published very interesting publication about it! http://www.communitycompost.org/index.php/projects/mad Here it is! Have a good read :) Pavel

    May 18, 2011
• Pavel Pšenička

  pollutants in digestate

  Do any of you have some experience with amount of pollutants (heavy metals, pesticides, PAH,...) in digestate and their dissipation? Or can you recomand me any paper focus on that topic? Thank you

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    Pavel Pšenička replied

    Thank you for your recomendations, they were full of valuable information!

    Feb 23, 2011
• Jean-Louis Roubaty

  process for reducing hydrogen sulfide by microaeration of the digester

  Who has an experience (research or industrial) of the injection of air or oxygen in a digester of biological sludge for reducing the hydrogen sulfide in the biogas? It is well known that theWho has an experience (research or industrial) of the injection of air or oxygen in a digester of biological sludge for reducing the hydrogen sulfide in the biogas? It is well known that the injection of oxygen (to get a residual of oxygen of 0.1 to 1.5% by volume in the biogas) could reduce significantly the level of H2S and not affect the quantity of methane?.

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    Paul Harris replied

    This was discussed a while back on the Anaerobic Digestion discussion List (I suspect when it was still hosted by REPP) and has been raised again.

    Jan 27, 2011

• Post protected

  Join ResearchGate now to read this post.

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    Bhekisipho Ndiweni replied

    Well, from what i understand, only a few micro-organisms thrive at that temperature, and its mainly only for the first part of the digestion phase, 'acidongenesis', the rest of the digester is keptWell, from what i understand, only a few micro-organisms thrive at that temperature, and its mainly only for the first part of the digestion phase, 'acidongenesis', the rest of the digester is kept at 35°C for methanogenesis to occur. Few research has been done on pathogen content in the effluent, mainly because the main concern is Methane production and insuring that pathogens do not increase. Many journals state that pathogen levels reduce but hardly give hard numbers. Hope this helps in your pursuit. Sciencedirect is a good start if you have the access or money to the journals.

    Dec 14, 2010
• Faisal Mullalayam

  CO2 sparging and Biogas production

  One can strip CO2 from biogas, right?. So if some try to sparge this CO2 back to an anaerobic digester, is there any chance of increased biogas production? If so, can anyone suggest a possibleOne can strip CO2 from biogas, right?. So if some try to sparge this CO2 back to an anaerobic digester, is there any chance of increased biogas production? If so, can anyone suggest a possible mechanism for the same?

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    Faisal Mullalayam replied

    ofcourse u are right.. Mr harris and frank.. I also felt the same.. Anyway i think nobody has checked abt this sparging CO2 till.. so if somehow it increases the process efficiency its good na..ofcourse u are right.. Mr harris and frank.. I also felt the same.. Anyway i think nobody has checked abt this sparging CO2 till.. so if somehow it increases the process efficiency its good na.. could get enriched biogas as well as better process if "the idea works".. anyway thank you all for your comments.. hope it was a good discussion..

    Oct 19, 2010
• Ram Shrivastava

  Practical use of micronutrients to increase gas production

  Please share your experience of using Process enhancing additives to increase biogas production in anaerobic digesters processing industrial waste water. This may include enzymes, micronutrientsPlease share your experience of using Process enhancing additives to increase biogas production in anaerobic digesters processing industrial waste water. This may include enzymes, micronutrients etc. What works?

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    Rajib Biswas replied

    @ Ram Shrivastava: Yes, you are right about wasterwaster treatment system in operation. However, many full-scale biogas plants are available in Europe, for instance in Germany, Sweden Denmark, France@ Ram Shrivastava: Yes, you are right about wasterwaster treatment system in operation. However, many full-scale biogas plants are available in Europe, for instance in Germany, Sweden Denmark, France etc., where manure is used as the main substrate though waste from food processing industries and other agricultural residues are being used as codigestive materials. Above all, manure is the main substrate (>70%). The main problem for manure is 80% of total OM in manure consists of fiber material which is recalcitrant to anaerobes. Thus usual recovery is only 30-50% of total potential. If this fiber can be thermo-physically pretreated, a recovery of up-to 85% can be achieved. Though considering all transportation costs involved, still biogas plants are in operation, even where manure is only substrate! Still they are making money, doing business.

    Jul 4, 2010
• Rajib Biswas

  Optimizing pretreatment

  Hello, I would like to invite researchers working on anaerobic digestion, biogas process, pretreatment technology to enhance biodegradability, process inhibitions, lignocellulosic biomass and withHello, I would like to invite researchers working on anaerobic digestion, biogas process, pretreatment technology to enhance biodegradability, process inhibitions, lignocellulosic biomass and with similar interests. I wanted to share my experience and problems during my research here at ResearchGate. I really appreciate your contribution and interests. Thanking you, Rajib Biswas PhD Fellow, Section for sustainable biotechnology, Aalborg University Copenhagen.

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    Bernhard Quirbach replied

    Hello Frank ch4-booster.de the spin off at university Hamburg build an system for biogas-plants. This system could be used by farmer also in existing plants. Microwave will be used forHello Frank ch4-booster.de the spin off at university Hamburg build an system for biogas-plants. This system could be used by farmer also in existing plants. Microwave will be used for denatured proteins in cyanobacteria which will be used as a biogassubstrate. cyanobacteria are a good base for biobassproduction but cyanobacteria have some proteins (toxins) which inhibit the growing of other bacteria. regards Bernhard

    Apr 29, 2010
• Sonia Seger P. Mercedes

  Petrobras (Petroleo Brasileiro S.A.) signs contract to buy purified biogas

  Data: 19/01/2010 11:08:25 [186 words] Source: Investimentos e Notícias - Tempo Real - Inglês (Brasil) Language: English Author: Investimentos e Notícias SÃO PAULO, 1/19/10 - Brazilian oilData: 19/01/2010 11:08:25 [186 words] Source: Investimentos e Notícias - Tempo Real - Inglês (Brasil) Language: English Author: Investimentos e Notícias SÃO PAULO, 1/19/10 - Brazilian oil giant Petrobras signed a contract on Monday with Gás Verde S.A RO buy purified biogas produced at the Aterro Metropolitano de Jardim Gramacho plant, in Rio de Janeiro. This supply of around 200,000 m³/day, will be used as an energy input at the Refinaria Duque de Caxias (Reduc) refinery, substituting natural gas that will instead be sold on the non-thermoelectric market. As well as offering gas supply diversification for the refinery, the initiative will allow the company to develop specific knowledge about burning purified biogas. From the socio-environmental viewpoint, the acquisition of purified biogas will help make viable the project to recuperate the Aterro Sanitário Metropolitano Jardim Gramacho dump, one of the largest projects in the world that is part of the UN's Clean Development Mechanism (CDM). The Petrobras target for this Project is to cut greenhouse gas emissions; treat 2 million liters a day of leachate; recover vegetation at the 3 million m³ dump; contribute to the recovery of adjacent mangroves; and implement a social plan of action seeking to improve the life of those processing waste. (Newsroom - Agência IN)