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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

An oxidative bleaching stage in a multi-stage bleaching sequence,  1, fiche 1, Anglais, - chlorine%20dioxide%20bleaching%20stage

Record number: 1, Textual support number: 1 OBS

To produce high and stable brightness, it is usually done twice with an alkaline extraction in between, giving a CdEoDED or a CdEoHDED bleaching sequence. A D stage is conducted under controlled conditions optimized to promote its reactivity with lignin and other coloured constituents of the pulp with minimum carbohydrate degradation, thus preserving pulp strength.  1, fiche 1, Anglais, - chlorine%20dioxide%20bleaching%20stage

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Stade d'oxydation typique d'une séquence de blanchiment en plusieurs stades.  1, fiche 1, Français, - stade%20de%20blanchiment%20au%20bioxyde%20de%20chlore

Record number: 1, Textual support number: 1 OBS

Afin d'obtenir un degré de blancheur élevé et stable, il est d'ordinaire appliqué deux fois avec un stade d'extraction intercalé, d'où une séquence CdEoDED ou CdEoHDED. Il peut également être localisé en tête de séquence, par exemple, DEoDED. Un stade D est appliqué dans des conditions optimales contrôlées pour susciter la réaction du bioxyde de chlore avec la lignine et avec d'autres constituants colorés de la pâte tout en assurant une dégradation minimale des hydrates de carbone et, par conséquent, de sa résistance.  1, fiche 1, Français, - stade%20de%20blanchiment%20au%20bioxyde%20de%20chlore

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 DEF

Bleaching with a chlorine dioxide solution.  2, fiche 2, Anglais, - chlorine%20dioxide%20bleaching

Record number: 2, Textual support number: 1 OBS

chlorine dioxide solution: A very unstable water solution of chlorine dioxide gas (ClO((subscript))2) produced in the chemical preparation area of a pulp mill. It is used in the pulp bleaching process.  3, fiche 2, Anglais, - chlorine%20dioxide%20bleaching

Record number: 2, Textual support number: 2 OBS

The initial utilization of chlorine bleaching was in the later stages of a multi-stage bleaching sequence. The CEHDED sequence became dominant in the early 1960's for the production of full-bleach kraft pulp. As the cost of Cl02 became more competitive with sodium hypochlorite in the late 1960's, the CEDED sequence became the industry standard. In the 1970's, attention was given to replacing part of the chlorine in the chlorination stage with chemically equivalent chlorine dioxide to improve pulp strength and color stability and reduce effluent color ....  1, fiche 2, Anglais, - chlorine%20dioxide%20bleaching

Fiche 2,  Justifications,  Français

Fiche 2,  Justifications,  Espagnol