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PRECIPITATION CHIMIQUE [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-03-04

English

Subject field(s)
  • Water Treatment (Water Supply)
CONT

Chemical precipitation sludge is produced through either sulfide or hydroxyde precipitation.

OBS

The term "sludge" is considered to be an uncountable noun. However, it is often found in the plural form (sludges), particularly when speaking of different types of sludge.

Key term(s)
  • chemical precipitation sludges

French

Domaine(s)
  • Traitement des eaux
Key term(s)
  • boue de précipitation chimique

Spanish

Save record 1

Record 2 2011-09-26

English

Subject field(s)
  • Geochemistry
  • Geology
DEF

A rock, composed predominantly of calcite, formed by direct chemical precipitation.

French

Domaine(s)
  • Géochimie
  • Géologie
OBS

Il est assez difficile de distinguer des calcaires à grain fin déposés mécaniquement de calcaires fins déposés chimiquement. On sait que le carbonate de chaux peut précipiter soit à l'air libre (travertins, stalactites), soit en solution dans des eaux douces ou des eaux marines.

Spanish

Save record 2

Record 3 - external organization data 2006-08-01

English

Subject field(s)
  • Geochemistry
  • Water Treatment (Water Supply)
  • Nuclear Waste Materials
  • Compartment - Canadian Nuclear Safety Commission
CONT

... certain radioactive effluents must be purified, according to their salinity and the nature of the pollutants, by fixing on ion exchangers or by chemical precipitation ...

CONT

... it was generally believed that the iron and silica in iron-formations were derived from deeply weathered rocks and deposited in restricted basins where chemical precipitation was predominant over clastic sedimentation.

CONT

The processes include radioactive decay, adsorption, chemical precipitation, dilution, dispersion and other phenomena which influence the transport of radionuclides.

French

Domaine(s)
  • Géochimie
  • Traitement des eaux
  • Déchets nucléaires
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

[...] la radioactivité de certains effluents nécessite, suivant les salinités et la nature des polluants, la dépollution par fixation sur échangeurs d'ions ou par précipitations chimiques [...]

CONT

Les roches sédimentaires [...] résultent de l'accumulation de matériaux provenant [...] de l'altération de roches préexistantes, de précipitations chimiques ou de l'activité biologique.

CONT

Les processus comprennent la décroissance radioactive, l'adsorption, la précipitation chimique, la dilution, la dispersion et d'autres phénomènes qui influent sur le transport des radionucléides.

Spanish

Campo(s) temático(s)
  • Geoquímica
  • Tratamiento del agua
  • Desechos nucleares
  • Compartimiento - Comisión Canadiense de Seguridad Nuclear
Save record 3

Record 4 2006-03-28

English

Subject field(s)
  • Geochemistry
  • Translation (General)
OBS

Chemically precipitated iron-formation and ironstone.

French

Domaine(s)
  • Géochimie
  • Traduction (Généralités)
OBS

Formations de fer et roches ferrugineuses issues d'une précipitation chimique.

Spanish

Save record 4

Record 5 1995-07-21

English

Subject field(s)
  • Geochemistry
OBS

By analogy with "chemically precipitated limestone" and "chemically precipitated sediment" (see records).

French

Domaine(s)
  • Géochimie
CONT

On définit la syngenèse comme un processus dans lequel le minerai et son enveloppe se mettent en place en même temps. Cela s'applique aux gîtes détritiques (or, platine, étain, diamant, etc.), aux gîtes de précipitation chimique dans les sédiments, aux gîtes volcaniques [...]

Spanish

Save record 5

Record 6 1992-06-10

English

Subject field(s)
  • Geochemistry
CONT

... Superior BIF [banded iron formation] formed in fairly shallow water on continental shelves or along the margins of shelves and miogeosynclinal basins. There is general agreement that they are chemically precipitated sediments but there is no agreement on the source of the iron.

French

Domaine(s)
  • Géochimie
CONT

La glauconite est principalement formée de grains de glauconie, vert foncé, mesurant 1 mm environ. C'est un sédiment marin, formé par précipitation chimique.

Spanish

Save record 6

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