Physico-chemical process of uptake of substances from solutions or mixtures of gases by solids or liquids with the formation of solutions.


The absorption of a substance from a gaseous mixture or solution by the surface layer of a liquid or solid.

Ammonia (NH3)

Nitrogen gas, which was formed by the breakdown of nitrogenous compounds like egg white, urea and uric acid.


Without oxygen, in conditions of oxygen deficiency.

Anaerobic bacteria

Microorganisms living and breeding in an oxygen-free environment.

Anaerobic biodegradation

Degradation of organic matter by anaerobic microorganisms, which results in the formation of biogas.



The product of anaerobic biological splitting of organic matter. Contains 45-70% methane, 30-55% carbon dioxide, boundary volumes of nitrates, sulphides and other gas impurities. In legal documents and regulations, the term “biogas” also applies to gas brought to the quality of natural gas (also called “bio-natural gas” or “biomethane”). For gas after anaerobic splitting, the terms “raw gas” or “raw biogas” are also used.

Biogas complex

Plant for production, accumulation and utilization of biogas, including the corresponding equipment for operation. Biogas production is based on the oxygen-free splitting of organic matter.


Biodegradable substances, such as waste and remnants of agriculture, forestry and food processing industry.


The term for methane of biological origin is applied to biogas, the quality of which is increased to the level of natural gas, which is synonymous with bio-natural gas.


Calorific value

The amount of heat in calories (joules, etc.), which emits 1 m3 of gaseous fuel during complete combustion. The synonym is the heat of combustion.

Carbon dioxide (CO2)

A colorless, non-toxic, flame-retardant gas with a slightly acidic odor; it`s one of the products of the combustion process.

Cogeneration module

Combined thermal power plant.

Cogeneration of thermal and electric energy

Simultaneous transformation of energy into mechanical / electrical energy and useful heat.

Condensate removal

Biogas generated in the methan tank, saturated steam and requires dehumidification before being delivered for conversion to cogeneration modules. Purposeful removal of condensate is achieved in a condensation well.

Conditioning of biogas

Synonym – enrichment. Enrichment of methane in biogas.

Conventional unit of livestock

One unit of livestock equals 500 kg of live weight of livestock.


Conversion in the context of an energy source refers to the concepts of transforming and converting fuels into solid, liquid and gaseous energy sources.


Carbon dioxide

CO2- equivalent

The potential of global warming of any greenhouse gas, the amount of which equates to the amount of CO2 with the same potential of global warming.

Costs of energy production

Total costs associated with providing with final energy.

Degistat / Organic bio fertilizers

Organic waste (raw material) after anaerobic digestion.

Degistat’s Storehouse

A lagoon or reservoir in which accumulated and stored fermented organic waste is deposited before use.


Splitting of organic matter into simpler components or molecules during biotic and abiotic processes.

Desulphurization / Sulfur removal

The process of biogas enrichment, in the course of which the removal of sulfur from the composition of biogas is carried out by biological and / or chemical methods.

Dew point

The temperature at which (or below) a water vapor, which is always present in the air, unsaturated or, more simply speaking, it can still absorb additional water, becomes saturated, and its excesses are deposited in the form of precipitation or condensation.

Dry substance

Substances not evaporated measured according to a standardized process.


Emissions occur when something goes into the environment. Gases, dust, odors, waste water that can be eliminated, as well as light, heat, radiation, sounds and percussion (sting / vibration).

Energy crops

Vegetable crops cultivated specifically for energy use. The energy contained in plants is available for the implementation of anaerobic digestion, combustion and gasification processes.

Exposure time

Period of stay of organic wastes (substrates) in methane tanks.


A multi-stage process in which organic matter is cleaved in the absence or deficiency of oxygen and humidity. One of the products of this process is biogas.


The synonym – “methane tank” – a reservoir of cylindrical shape, in which occur processes of anaerobic splitting of organic substances.


Livestock waste, consisting of manure and urea and containing up to 20-25% of dry matter.

Methan tank

A reservoir of cylindrical shape, made of steel or reinforced concrete, sealed, equipped with mixing means, in which occur processes of anaerobic digestion of organic substances.


Raw biogas

Biogas immediately after the anaerobic cleavage process (before increasing its quality).

Supply of organic raw materials

The process of supplying organic waste (raw materials) in an autoclave.

The final energy source

The term “final energy source” refers to energy resources, which ultimately are used by the end user.

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