Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Ulf Germgård"'
Autor:
Niklas Kvarnlöf, Ulf Germgård
Publikováno v:
BioResources, Vol 10, Iss 3, Pp 3934-3947 (2015)
This study discusses alternatives for the production of sulfite pulps cooked to high kappa numbers, and a subsequent oxygen treatment by using the same cation in the cooking and in the oxygen stages. Magnesium was used as a cation during both the coo
Externí odkaz:
https://doaj.org/article/63daf4f55b6c4b53bcd13720371afd08
Autor:
Jonna Boudreau, Ulf Germgård
Publikováno v:
BioResources, Vol 9, Iss 2, Pp 2107-2114 (2014)
The strength of the adhesion between the paper and the drying Yankee cylinder is of great importance with respect to the final properties of a tissue paper product. Therefore, the effects of a few potentially important pulp properties have been evalu
Externí odkaz:
https://doaj.org/article/a6da6e3b83b843cf96ac911cf657fb6e
Screening of pulp can be expressed as a process where solid contaminants are removed from a pulp slurry without an excessive loss of fibres of acceptable quality. The impurities originate from the feedstock, or they are generated during the transport
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dacad90d07c5b18fa954f8270f7c47f2
http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-93710
http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-93710
Publikováno v:
Nordic Pulp & Paper Research Journal. 34:433-441
To be able to charge a correct amount of chlorine dioxide in the D0-stage, a pulp mill needs good control of the bleaching process and good sensors to keep the variability of the bleaching result on an acceptable level. It is also important to includ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6df327b8d36f512397dc9ef969b2619e
https://doi.org/10.1515/npprj-2018-0047
https://doi.org/10.1515/npprj-2018-0047
Publikováno v:
Holzforschung. 73:645-652
Dissolved matter (DM) in the oxygen delignification (O2Del) stage affects the lignin and carbohydrate degradation. To understand this topic better, laboratory O2Del experiments were conducted with controlled addition of either unoxidized dissolved ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fa20bb09412210b54f45f122ab0c104
https://doi.org/10.1515/hf-2018-0179
https://doi.org/10.1515/hf-2018-0179
Autor:
Nicola Giummarella, Gunnar Henriksson, Raghu Deshpande, Martin Lawoko, Hans Grundberg, Lars Sundvall, Ulf Germgård
Publikováno v:
Industrial Crops and Products. 115:315-322
The presence of covalent bonds between lignin and polysaccharides was investigated in dissolving pulps made with one-stage and two-stage acidic sulfite pulping for 100% pine heartwood raw material. ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebf5ee0010ccb84144766866d7a42db1
https://doi.org/10.1016/j.indcrop.2018.02.038
https://doi.org/10.1016/j.indcrop.2018.02.038
Publikováno v:
May 2017. 16:275-284
The presence of dissolved matter in the pulp suspension in an oxygen (O2) delignification stage, consisting mainly of dissolved lignin, is normally considered to negatively affect the delignification rate due to the competing reactions between the fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abcd5cbb55fa0d7e2dd730b9a2a437fe
https://doi.org/10.32964/tj16.5.275
https://doi.org/10.32964/tj16.5.275
Publikováno v:
Nordic Pulp & Paper Research Journal. 31:379-385
Sulfite pulping of pine is well-known to be a risky process because problematic lignin conden-sation reactions can occur resulting in poor pulp quality. However, sulfite pulping of pine is interest ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46d085f73efd78be4fa63f055b6e5b03
https://doi.org/10.3183/npprj-2016-31-03-p379-385
https://doi.org/10.3183/npprj-2016-31-03-p379-385
Publikováno v:
March 2016. 15:167-174
While carryover of dissolved lignin between stages in the pulp mill fiber line is a well-known problem, it is still typically seen only as a minor disturbance factor or bias in the control of oxygen (O2) delignification and bleaching stages. The pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4939b1add38501dd2e4d25e6c429390f
https://doi.org/10.32964/tj15.3.167
https://doi.org/10.32964/tj15.3.167