The lexic

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This page brings together the definitions of terms used on this site

industrial plant which is made pysico a chemical reaction.

cold plasmas
Plasma: Fluid composed of gas molecules, ions and electrons. This is the 4ieme state of matter after solid, liquid and gas. There are many classes of plasma. This is the state of the most complex matter. A fundamental characteristic of classification is the degree of ionization. For simplicity, when a plasma is fully ionized, it is called hot thermal plasmas (4000 ° K), when partially ionized it is called cold plasma (1000 ° K) or plasma discharge (lightning).

brief and very bright light reflecting an electrical discharge between two semiconductor separated by a gas space (or empty) non-conductive.

A method of refining a gas which modifies the composition under the effect of the temperature and / or pressure. Optionally in the presence of a catalyst

Conversion, under the action of temperature and optionally a catalyst, saturated hydrocarbons of a petroleum fraction to lighter hydrocarbons.

Ratio of energy or other quantity supplied by a machine energy or the corresponding quantity consumed by this machine.

Degradation of environment (natural or not) by external substances to the environment. On the whole the pollution of environment can be regarded as the time or environment can no longer absorb excess substances, usually chemical. It is the breaking of the balance of a cycle of self-healing (recycling)

Action to clean up: remove the external elements to the middle with saturated.

chemical species composed primarily of carbon and hydrogen with the formula after CnH2n 2 + (or variants). Almost all fossil fuels are composed of hydrocarbons, more or less simple.

Clear colorless liquid, odorless, tasteless, body compound whose molecules consist of two hydrogen atoms and one oxygen atom (H2O). The ocean water covers 80% of the surface of the Earth. This is the definition of Larousse, we see, seeing the video of the water masters the properties of water are, in reality, although unknown to science ... or at least it is not taught.

Use of a substance as an energy source or as a feedstock to provide work or operate a system. often relates the amount of material consumed in the product system.

Sytem for transforming any energy (typically thermal or electrical) into mechanical energy.

Generator of steam or hot water (sometimes other fluid), for heating, power generation.

Converting hydraucarbures
see reforming

Reforming in the presence of superheated steam.

carbon sinks

Carbon sinks are the storage of CO2 by growing forests and agricultural lands through photosynthesis. The trees, during their growth, "store" the carbon and prevent its diffusion into the atmosphere. As part of the implementation of the Kyoto protocol, taking these carbon sinks into account would reduce the burden of reducing industrial pollution and greenhouse gas emissions. However, this storage phenomenon stops or even reverses at the end of growth, which means that these carbon sinks are very controversial, since their actual contribution to the equilibrium of the atmosphere is still uncertain the scientific plan.


The HQE (High Environmental Quality) is a process, initiated in 1996, to minimize the environmental impact of a building, natural resource consumption, waste management, noise ... Fourteen environmental requirements (targets) define this process. They relate to the respect and protection of the external environment, and the creation of a satisfactory indoor environment, that is to say, comfortable and healthy. The HQE is not a label but a certification is under consideration.


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