bacteria's converting organic matter into combustible biogas.

The breakdown of organic waste in the absence of oxygen. Produces a useful biogas (mainly methane) and a solid digestate that can be composted to produce a soil improver.

Wastewater solids and water (about 5% solids, 95% water) are placed in a large tank where bacteria decompose the solids in the absence of dissolved oxygen.

Anaerobic digestion is a biological process that produces a gas principally composed of methane (CH4) and carbon dioxide (CO2) otherwise known as biogas. These gases are produced from organic wastes such as livestock manure, food processing waste, etc.

a method of composting that does not require oxygen. This composting method produces methane. Also known as anaerobic composting.

a biochemical process by which organic matter is decomposed by bacteria under controlled conditions in the absence of oxygen, producing methane gas and other by-products.

Sludge stabilization process where the organic material in biological sludges are converted to methane and carbon dioxide in an airtight reactor.

The decomposition of organic biodegradable material by bacterial action in the absence of air, and in warm, moist conditions and are used to convert biomass into heat or electricity.

Conversion of organic matter in the absence of oxygen under controlled conditions to such gases as methane and carbon dioxide.

A process where biodegradable material is encouraged to break down in the absence of oxygen.  Changes the nature and volume of material and produces a gas from which energy can be recovered

A process where biodegradable materials are broken down in the absence of oxygen. Material is placed in an enclosed vessel and in controlled conditions the waste breaks down, typically into a digestate, liquor and biogas.

The breakdown of waste in the absence of oxygen. A waste treatment process where biodegradable waste is placed in an enclosed vessel and breaks down under controlled conditions.

The complex process by which organic matter is decomposed by anaerobic bacteria. The decomposition process produces a gaseous byproduct often called "biogas" primarily composed of methane, carbon dioxide, and hydrogen sulfide.

An option of sludge processing that produces methane that can be burned as a fuel.

Decomposition of organic wastes by bacteria, in the absence of air (oxygen), to produce a gas, consisting mostly of methane and carbon dioxide.

A waste treatment process that uses oxygen-free conditions similar to landfill to create a product very much like compost www.wasteresearch.co.uk/ade/efw/anaerobic.htm

A biological process in which organic solids are decomposed into stable substances. Digestion reduces the total mass of solids and destroys pathogens (disease-causing microbes). The digested sludge should have the appearance and characteristics of a rich potting soil. As the organic solids are broken down by anaerobic bacteria, carbon dioxide and methane gases are formed and the methane can be used as a fuel to produce electricity.

The breaking down of organic matter in oxygen free conditions.

the process by which sewage sludges are degraded by anaerobic bacteria to form digested (stabilized) sludge and methane gas. a

Organic matter broken down by bacteria in the absence of air, producing a gas (methane) and solid (digestate). The by-products can be useful, for example biogas can be used in a furnace, gas engine, turbine or gas-powered vehicles, and digestates can be re-used on farms as a fertiliser.

A biological process that occurs in the absense of oxygen. In very large animal production operation, it is sometimes used to produce biogas (a low energy gas which is a combination of methane and carbon dioxide) from the biodegradable organic portion of manure. This gas can be used as an energy source. After anaerobic digestion, the remaining semi-solid (which is relatively odor free but still contains most of its nutrients) can be used as a fertilizer.

the breakdown of animal manure (organic material) in the absence of oxygen, (methane producing bacteria are most active in two temperature ranges, 95 to 105 °F and 130 to 135 °F

Anaerobic digestion (AD) is the harnessed and contained, naturally occurring process of anaerobic decomposition.http://www.foe.co.uk/resource/briefings/anaerobic_digestion.pdf Friends of the Earth FOE (2004 Anaerobic digestion Briefing of the breakdown of organic matter by anaerobic organisms in environments lacking oxygenhttp://www.wasteresearch.co.uk/ade/efw/anaerobic.htm Anaerobic Digestion Cardiff University Anaerobic Digestion Page An anaerobic digester is an industrial system that harnesses these natural process to treat waste, produce biogas that can be used to power electricity generators, provide heat and produce soil improving material.http://www.remade.org.uk/Organics/anaerobicdigestion.htm Anaerobic Digestion Remade Scotland Anaerobic Digestion Page