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  2. Anaerobic digestion - Wikipedia

    en.wikipedia.org/wiki/Anaerobic_digestion

    The scope for biogas generation from nonsewage waste biological matter – energy crops, food waste, abattoir waste, etc. - is much higher, estimated to be capable of about 3,000 MW. [94] Farm biogas plants using animal waste and energy crops are expected to contribute to reducing CO 2 emissions and strengthen the grid, while providing UK ...

  3. Anaerobic contact process - Wikipedia

    en.wikipedia.org/wiki/Anaerobic_contact_process

    The upflow anaerobic process is a large reactor which allows the waste to flow up from the bottom and separates the waste into 3 zones. At the very top is the biogas zone where the gas is collected. Bacteria digest waste in the lowest portion of the upflow reactor; the bioreactor zone. In between these two stages is the clarifier zone where ...

  4. Biogas - Wikipedia

    en.wikipedia.org/wiki/Biogas

    Biogas is a gaseous renewable energy source [1] produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste, wastewater, and food waste. Biogas is produced by anaerobic digestion with anaerobic organisms or methanogens inside an anaerobic digester , biodigester or a bioreactor .

  5. Anaerobic membrane bioreactor - Wikipedia

    en.wikipedia.org/wiki/Anaerobic_membrane_bioreactor

    An integral process within this part of the separation is hydrolysis, which decomposes the organic compounds into much simpler compounds which can then be passed through microbial cells. This is the first of a four-step process to complete the transformation of organic matter to biogases: [citation needed]

  6. Upflow anaerobic sludge blanket digestion - Wikipedia

    en.wikipedia.org/wiki/Upflow_anaerobic_sludge...

    Biogas with a high concentration of methane is produced as a by-product, and this may be captured and used as an energy source, to generate electricity for export and to cover its own running power. The technology needs constant monitoring when put into use to ensure that the sludge blanket is maintained, and not washed out (thereby losing the ...

  7. Methanogenesis - Wikipedia

    en.wikipedia.org/wiki/Methanogenesis

    Methanogenesis is the final step in the anaerobic decay of organic matter. During the decay process, electron acceptors (such as oxygen, ferric iron, sulfate, and nitrate) become depleted, while hydrogen (H 2) and carbon dioxide accumulate. Light organics produced by fermentation also accumulate. During advanced stages of organic decay, all ...

  8. Digestate - Wikipedia

    en.wikipedia.org/wiki/Digestate

    Acidogenic digestate produced from mixed municipal waste. Digestate is the material remaining after the anaerobic digestion (decomposition under low oxygen conditions) of a biodegradable feedstock. Anaerobic digestion produces two main products: digestate and biogas.

  9. Renewable natural gas - Wikipedia

    en.wikipedia.org/wiki/Renewable_natural_gas

    The most common way of collecting biogas with which to produce biomethane is through the process of anaerobic digestion. Multiple ways of methanizing carbon dioxide/ monoxide and hydrogen also exist, including biomethanation , the Sabatier process and a new electrochemical process pioneered in the United States currently undergoing trials.