Results 191 to 200 of about 91,381 (225)

Xylanase- and mannanase-aided ECF and TCF bleaching

Tappi Journal, 1996
This work studies the effects of T. reesei xylanase and mannanase treatments on the bleaching of radiata pine and northern pine sulfate pulps in three-stage peroxide- and chlorine dioxide-based DED bleaching sequences. The xylanase treatment was more effective in enhancing pulp bleaching than the mannanase treatment Pulp origin, method of pulping, and ...
Suurnäkki, Anna, Clark, Thomas, Allison, Robert, Viikari, Liisa, Buchert, Johanna   +4 more
core   +4 more sources

Effect of alkaline extraction in reducing the Kappa number in ECF bleaching

, 2021
The acid hydrolysis stage (A(HT)) used in bleaching sequences of pulp, has as its main objective, the degradation of hexenuronic acids which are present in the pulp and can affect its brightness, reversal of brightness, among others.
Iliane Rodrigues de Oliveira, Gustavo Ventorim, Ana Paula Almeida Ferraz   +2 more
semanticscholar   +2 more sources

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Reduction of Chlorine Dioxide Consumption During ECF Bleaching of Hardly Bleachable Hardwood Kraft Pulp

Kami Pa Gikyoshi/Japan Tappi Journal
Esty Octiana Sári, Hiroshi Ohi
exaly   +2 more sources

Bleach boosting effect of xylanase A from Bacillus halodurans C-125 in ECF bleaching of wheat straw pulp

Enzyme and Microbial Technology, 2013
Shuang-Yan Han, Hui Hu, Sui-Ping Zheng   +2 more
exaly   +2 more sources

Effect of a novel enzyme on fibre morphology during ECF bleaching of oxygen delignified Eucalyptus kraft pulps

Bioresource Technology, 2000
Antonio L Torres, M Blanca Roncero, F I J Pastor   +2 more
exaly   +2 more sources

The final bleaching of eucalypt kraft pulps with hydrogen peroxide: relationship with industrial ECF bleaching history and cellulose degradation

Journal of Chemical Technology and Biotechnology, 2011
Pedro E G Loureiro, Dmitry V Evtuguin, M Graça V S Carvalho   +2 more
exaly   +2 more sources

Extension of a steady-state chlorine dioxide brightening model for Z-ECF bleaching of softwood kraft pulps

March 2021, 2021
Earlier studies developed a steady-state model to predict the brightness and/or bleach consumption during the chlorine dioxide brightening (D1) of softwood pulps produced by conventional elemental-chlorine-free (ECF) sequences.
B. Brogdon, Lucia Lucian
semanticscholar   +1 more source

Lipophilic Extractives inEucalyptus globulusKraft Pulps. Behavior during ECF Bleaching

Journal of Wood Chemistry and Technology, 2005
Carmen S R Freire, Armando J D Silvestre, CARLOS Pascoal Neto   +2 more
exaly   +2 more sources

Effect of incorporation of ozone prior to ECF bleaching on pulp, paper and effluent quality.

Journal of Environmental Management, 2019
The pulp and paper industry is highly dependent on forest and water resources. It has more concerns on fair utilization of these resources and their conservation for its further expansion. Present study emphasizes on the use of rice straw (agro waste) in
D. Kaur, N. Bhardwaj, R. Lohchab
semanticscholar   +1 more source

Using bleaching stage models for benchmarking softwood ECF bleach plants

TAPPI Journal, 2022
Steady-state bleaching delignification and brightening models were used to gauge how well elemental chlorine-free (ECF) bleach plants were using chlorine dioxide to bleach 25-kappa softwood brownstocks. Case 1 examined the D0(EOP)D1 portion of Mill 1’s five-stage sequence that brightens the pulp to 86% ISO. Case 2 studied the D0(EO)D1 portion of Mill 2’
openaire   +1 more source