This page brings together the definitions of terms used on this site
Industrial installation where a pysico-chemical reaction takes place.
Plasma: Fluid composed of gas molecules, ions and electrons. It is the 4th state of matter after solid, liquid and gas. There are many classes of plasma. It is the most complex state of matter. A fundamental characteristic of classification is their degree of ionization. To simplify, when a plasma is fully ionized, we speak of hot thermal plasmas (4000 ° K), when it is partially ionized, we then speak of cold plasma (1000 ° K) or of discharge plasma (lightning).
brief and very bright light reflecting an electrical discharge between two semiconductor separated by a gas space (or empty) non-conductive.
Process for refining a gasoline which changes its composition under the effect of temperature and / or pressure. Possibly in the presence of a catalyst
Conversion, under the action of temperature and possibly of a catalyst, of saturated hydrocarbons from a petroleum fraction into lighter hydrocarbons.
Ratio of the energy or other quantity supplied by a machine to the corresponding energy or quantity consumed by that machine.
Degradation of an environment (natural or not) by substances external to this environment. Generally speaking, the pollution of an environment can be considered as the moment when an environment can no longer absorb a surplus of substances, generally chemical. It is the breaking of the balance of a cycle of self-regeneration (recycling)
Action of depolluting: removing the external elements to a medium having saturated it.
Chemical species composed mainly of carbon and hydrogen according to the formula CnH2n + 2 (or variants). Almost all fossil fuels are compounds of hydrocarbons, more or less simple.
Clear, colorless liquid, odorless, tasteless, a compound body whose molecules are made up of two hydrogen atoms and one oxygen atom (H2O). Ocean water covers 80% of the Earth's surface. This is the definition of Larousse, we see clearly, by seeing the video of the water masters that the properties of water are, in reality, well unknown to Science… or at least they are not taught.
Use of a substance as a source of energy or as a raw material to perform work or operate a system. The amount of material consumed is often referred to the product of the system.
Sytem for transforming any energy (typically thermal or electrical) into mechanical energy.
Steam generator or hot water (sometimes another fluid), used for heating, for energy production.
Reforming in the presence of superheated water vapor.
Carbon sinks refer to the storage of CO2 by growing forests and agricultural lands through photosynthesis. Trees, during their growth, “store” carbon and prevent its diffusion into the atmosphere. In the context of the application of the Kyoto protocol, taking these carbon sinks into account would alleviate efforts to reduce 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, insofar as their real contribution to the balance of the atmosphere is still uncertain. scientifically.
HQE (High Environmental Quality) is an approach, initiated in 1996, aimed at minimizing the environmental impacts of a building: consumption of natural resources, waste management, noise pollution, etc. Fourteen environmental requirements (targets) define this approach. They relate to respect and protection of the external environment, as well as the creation of a satisfactory internal environment, that is to say comfortable and healthy. The HQE is not a label but a certification is under study.