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25 de sept. de 2023 · Specific production of effluents: 31.6 m 3 /t (integrated pulp and paper mill); 90% of the water collected is reused; 82% of the water collected was returned to the river; Target: reduce water use by 25% in 2030;Pulp production (excluding energy and paper production) increased by 8% in total water use.
- Sustainable bleaching of Eucalyptus sp. kraft pulp with hypochlorous ...
The bleaching sequence with hypochlorous acid, ozone and...
- Sustainable bleaching of Eucalyptus sp. kraft pulp with hypochlorous ...
Kraft pulp is darker than other wood pulps, but it can be bleached to make very white pulp. Fully bleached kraft pulp is used to make high-quality paper where strength, whiteness, and resistance to yellowing are important. The kraft process can use a wider range of fiber sources than most other pulping processes.
Kraft process, (from German kraft, “strong”), chemical method for the production of wood pulp that employs a solution of caustic soda and sodium sulfide as the liquor in which the pulpwood is cooked in order to loosen the fibres. The kraft process differs from the sulfite process in that (1) the
About 95% of all bleached kraft pulp is made using chlorine dioxide in ECF bleaching sequences. Extraction or washing. All bleaching agents used to delignify chemical pulp, with the exception of sodium dithionite, break lignin down into smaller, oxygen-containing molecules.
17 de dic. de 2020 · Six produced eucalypt ( Eucalyptus globulus) kraft pulps, kraft cooked and ECF/TCF bleached at extreme industrial conditions at the CELBI SA kraft pulp mill (Leirosa, Portugal) were pre-selected to cover all the gamma of typically applied technological conditions.
1 de sept. de 2011 · Abstract. A modified kraft pulping process has been developed which successfully breaks the traditional hardwood kraft pulp yield barrier. The process produces fully bleached, high...
