A
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| Copolymer comprising three constituents: acrylonitrile, butadiene and styrene |
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| Number of accidents of Solvay personnel with a lost time for the injured person / million hours worked |
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| Family of products derived from alkali metals, including compounds such as sodium carbonate and caustic soda. Solvay′s Alkalis Sector covers derivatives from soda production and electrolysis, and a range of other inorganic products. |
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| Family of products derived from the allyl group CH2=CH-CH2 and used in particular to produce epoxy resins. |
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| NH3 gas formed by combining nitrogen with hydrogen; a very important intermediate throughout the chemical industry. |
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| Aqueous solution of ammonia |
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| Multiple interconnected stages in series. |
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B
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| Best Available Techniques describe the most effective technology and methods designed to prevent and where is not praticable, to reduce emissions and their impacts on the environment. These techniques must be already developed under economically and technically viable conditions. BAT are linked to IPPC Directive |
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| Clay (soft stone formed mainly of aluminum silicate) with a high capacity for absorption and decolorization |
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| System developed for surfaces cleaning in the industry (moulds, equipments, ...) and the restoration of building façades (removal of graffity, smog, ...) without damaging the support |
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| Additional processing technique which greatly improves the mechanical resistance of plastic parts (PVC bottles and sheets); drawing the material in two directions (transversally and longitudinally) rearranges the molecular chains, thereby increasing cohesion |
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| Mixture of salt and water |
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C
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| Technique for processing plastics into sheets or film: the material is heated and mixed to obtain a viscous paste, which is passed through a series of rollers until it forms a continuous sheet, and gradually cooled before being wound into a roll. |
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| Intramolecular ester of 6-hexanolactone; a cyclic compound in which the ring opens during polymerization to produce polycaprolactone, a biodegradable polyester. |
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| Service developed for transport accidents of products, providing information based on Solvay safety data sheets, wehenever the accident occured |
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| Common name for peroxysulfuric acid (H2SO5); can be produced from hydrogen peroxide |
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| NaOH, sodium hydroxide; important intermediate in the chemical industry owing to its properties as a base |
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| Manufacturing process whereby alkaline hydroxides are produced by treating the corresponding salt, e.g. production of caustic soda (sodium hydroxide) by treating sodium carbonate with caustic lime |
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| Recognition by an external body; certification can only apply to instruments; instruments are nor accredited but they may be certified |
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| See Chlorofluorocarbons |
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| Family of fluorocarbons, composed of carbon (C), chlorine (Cl) and fluorine (F); production is being phased out in all the signatory countries to the Montreal protocol (1987) |
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| Plastics processing technique whereby a polymerized coating is spread over a material (textile, paper, non-woven fabric) to produce leatherette, wall coverings, etc |
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| Plastics processing technique to produce multi-layered objects; coextrusion is used in the production of pipes, films, gas tanks, bottles, etc |
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| A family of bacteria or bacilli including Escherichia coli, which is normally commensal in the human colon. Under certain conditions and depending on the strain, this bacteria can be pathogenic, causing infections of the urinary tract and diarrhea |
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| Operation whereby an opening, temporary or definitive, is made from the colon to the skin to create an artificial anus |
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| Plastics preparations in the form of granules, pellets, etc. ready for use in processing machines; depending on the intended use, stabilizers, fillers, pigments, reinforcing agents, etc. can be added to the basic resin |
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| Raw water (or liquid) that does not pass through the membrane barrier. The concentrate stream contains higher total dissolved solids or suspended solids than the feed stream. |
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| The accumulation of ionics species within the boundary layer at the surface of crossflow membranes. The concentration of ions is greater at the surface of the membrane than in the bulk feed stream. |
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| Techniques which are used to limit, to reduce, to minimise or to prevent emissions |
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| Polymer whose chain contains a series of dissimilar monomers |
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| A type of membrane filtration where the pressurized feed stream flows parallel to the membrane surface to continuously wash concentrated contaminants away from the membrane surface. |
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| Process of extracting gold from its ore by attacking the latter with sodium cyanide (NaCN) in the presence of oxygen (O2), hydrogen peroxide (H2O2) or Caro′s acid (H2SO5); the effluents remaining once the gold has been separated contain toxic cyanide salts, which are oxidized by the hydrogen peroxide or Caro′s acid into non-toxic, decomposable cyanates |
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D
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| Molecule derived from ethane (CH3-CH3), in which two chlorine atoms replace the hydrogen atoms |
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| Emission arising from direct contact of volatile or light dusty substances with the environment (atmoshere, under normal operating circumstances. These can result from:
- inherent design of the equipment (e.g. filters, dryers, ...)
- operating conditions (e.g. during transfer of material between containers)
- or from a gradual release to other media (e.g. to cooling water or waste water)
- type of operation (e.g. maintenance activities).
Diffuse emission sources can be point, linear, surface or volume sources; multiple emissions inside a building are normally considered as diffuse emissions, whereas the general ventilation system exhaust is a ducted emission. Examples of diffuse emissions: opening of a filter or a vessel; diffusion through an open surface; volatile compounds emissions from sewers, loading/unloading operations without capture of vented vapours; dust from bulk storage, ... |
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| Family of aromatic molecules composed of carbon, hydrogen, oxygen and chlorine. They are produced in numerous combustion processes and may be destroyed at high temperatures |
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E
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| Analysis and measurement of the environmental impact of a product or process throughout its life cycle, from the production of the raw materials and energy to waste and recycling |
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| Ethylene Dichloride: C2H4Cl2 raw material used to produce VCM thru thermal cracking |
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| Physical fluid (air or water together with contaminants) forming an emission |
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| Release of a quantity of substance, energy or vibration, into the environment (air, water, soil, ...); the emission can be expressed as a total quantity in absolute or as a rate per a defined period of time.
IPPC definition: direct or indirect of substances, vibration, heat or noise form individual or diffuse sources in the installation into the air, water or land
EPER definition: direct release of a pollutant to air or water as well as the indirect release by transfer to an off-site wastewater treatment plan |
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| Direct relation or fixed ratio between measured data or physical parameters and a quantitative emission value, based on operational experience or previous numerous measurements, and defined within some context and within boundary conditions, expressed as specific emission |
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| Mass, expressed in terms of certain specific parameters, concentration and/or level of an emission, which may not be exceeded during one or more periods of time; ELVs may also be laid down for certain groups, families or categories of substances, in particular those list in annex III of the IPPC directive |
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| Epoxide compound with the formula CH2Cl-(CH-CH2)O, the raw material for epoxy resins |
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| Hormone secreted by the sex organs in both women and men. Estrogen is prescribed for hormone deficiencies, e.g. to relieve certain symptoms associated with the menopause and to treat osteoporosis, amenorrhea and some cases of infertility |
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| European Council of Vinyls Manufacturer, all western European PVC producer are represented in this organisation, which is leading member of Vinyl2010, the body managing the Voluntary Commitment of the industry chain |
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| Plastics processing technique to produce films, pipes and smooth or corrugated sheeting. The plastic is forced through a flat or perforated annular die, which gives the object its definitive shape |
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| Plastics processing technique whereby an intermediate product, a parison obtained by extrusion, is placed in a mold; a gas, generally air, is then blown in to force it to take the shape of the mold. This technique is used to produce hollow objects such as barrels, bottles and tanks |
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F
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| Raw water (or liquid) input to a membrane array. |
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| A netting or similar material that separates adjacent leaves and allows feedwater to flow freely across the membrane surface. |
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| Technique of reducing the pollutant contents of a gaseous effluent (mostly smoke): may concern dust (solid particles), acid components, heavy metals, organic micropollutants (dioxins, furans); is generally severely regulated by official emission limits (e.g. European Directives) |
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| Products produced by polymerisation of fluorine containing starting material being used for surface treatment of paper and textiles creating water resistant layers |
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| Technique used in the production of gas tanks, for example; a fluorinated gas chemically modifies the surface of the plastic to increase the tank′s impermeability to petrol fumes |
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| Substance which promotes the fusing of solids by reorganizing their crystal networks |
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| Mass or volume rate of transfer through membrane surface, expressed as gal / ft2 / day. |
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| Monitoring achieved without any preliminary sampling plan during an anomaly or upset or unexpected conditions |
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| Deposition of solid material in the element from the feed stream of the membrane. |
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| emissions into the environment resulting from a gradual loss of tightness from an equipment designed to contain an enclosed fluid (gaseous or liquid) and supposed to be tight, basically caused by a difference of pressure and a resulting leak; examples of fugitive emissions are: leak from a flange, a pump, a sealed or tightened equipment... Fugitive emissions are a subset of diffuse emissions |
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| see "Dioxins" |
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G
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| (from Galien) Any technique relating to the preparation, formulation, presentation and conservation of medicines (capsules, pills, intravenous and intramuscular applications, suppositories, etc.) |
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| Good laboratory practice: set of principles that provides a framework within which laboratory studies are planned, monitored, recorded, reported and archived; these studies are undertaken to generate data by which the hazards and risks to users, consumers and third parties, including the environment, can be assessed for substances (pharmaceuticals, agrochemicals, cosmetics, food and feed additives and contaminants, novel food and biocides); GLP helps assure regulatory authorities that the data submitted are a true reflection of the results obtained during the study and can therefore be relied upon when making risk/safety assessment |
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| Approach which provides a defined framework to the given activity; it does not preclude other approaches which may be more appropriate for a given requirement |
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| In 1996 the EU Commission started the "horizontal study on PVC", consisting of 5 individual studies. The outcome of these together with other information is the body of the "green paper on PVC" issued in 2000 |
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| A basket of 6 gases, Carbondioxide (CO2), Methane (CH4), Dinitrogenoxide (N2O), HFCs, PFCs and Sulfurhexafluoride (SF6) which have a Global Warming Potential (GWP) and therefore have an impact on Climate Change |
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H
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| See "Hydrogen Peroxide" |
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| Fluorine and chlorine containing hydrocarbons |
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| High density, see polyethylene |
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| High-density polyethylene, see polyethylene |
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| Fluorine containing hydrocarbons which have no negative impact on the ozone and are mainly used for refrigeration, air-conditioning and insulation applications; they have replaced ozone depleting chlorinated hydrocarbons |
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| Polymer obtained from a single molecular radical |
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| High Production Volume = the ICCA HPV Chemicals Initiative is a voluntary action by chemical companies, primarily in Europe, Japan and North America, to deliver globally harmonised data and initial hazard assessments for some 1,000 High Production Volume (HPV) chemicals |
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| Composed of carbon (C), chlorine (Cl) and fluorine (F), with at least one hydrogen (H) atom. The first generation of CFC substitutes; they decompose in the troposphere and have little chance of reaching the stratosphere |
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| Composed of hydrogen (H), carbon (C) and fluorine (F). The second generation of CFC substitutes, containing no chlorine atoms at all |
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| H2O2, aqueous solutions of hydrogen peroxide, more commonly known as peroxide bleach, are used for their oxidizing properties in the bleaching of paper and textiles, in the treatment of effluents, in pharmacology, and as an intermediate in the chemical industry. Hydrogen peroxide is broken down into water and oxygen in an alkaline environment or in the presence of metallic derivatives |
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| The measurement of air humidity |
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I
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| level of concentration of a [substance] pollutant into the environnement after dispersion into the receiving media (air, water, soil,…) see also : ambient concentration: concentration of a substance in a medium resulting from the addition of an incremental concentration to a background concentration |
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| Loss of containment of material or energy |
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| Technique of classical combustion (with air) applied to household waste, now most of the time associated with energy recovery: is often called "thermal valorization" to underline its positive role in saving non-renewable energy sources |
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| Plastics processing technique to produce solid parts with a high degree of precision. The material is injected into a mold by a plunger; a press keeps the mold closed while the material cools. At the end of the process the mold is opened and the part ejected |
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| Localized reduction or stoppage of blood flow in an organ |
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| Standards published by the International Organization for Standardization; the 9000 series defines quality assurance models for all companies in the industrial and service sectors; certification indicates compliance with certain formalized working procedures |
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| Quality of a polymer having a molecular chain with a regular structure |
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K
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| Technique of filtering blood through a microporous membrane; ambulatory dialysis is an option whereby the patient wears a plastic pouch containing the dialysis fluid |
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L
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| Disaccharide (double sugar) with the formula (C12H22O11) present chiefly in milk; may be broken down into two other sugars, glucose and galactose |
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