Results 141 to 150 of about 52,657 (182)
Characterization of effluents from TCF bleaching of softwood kraft pulp
, 1998 peerReviewed
Ristolainen, Matti, Alén, Raimo
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Resorption of dissolved organic material in acid TCF bleaching stages
Nordic Pulp and Paper Research Journal, 1997Carl-Anders Lindholm, Sergey Malkov
exaly +2 more sources
TCF BLEACHING OF KRAFT PULPS WITH LACCASE AND XYLANASE
Journal of Wood Chemistry and Technology, 2001The paper shows the results of hydrogen peroxide and ozone bleaching with the use of laccase-mediator-system (LMS) and a combination of laccase and xylanase. The TCF bleaching of birch and pine kraft pulps before as well as after oxygen delignification is particularly effective in the following bleaching sequences: LQPZP, LZQPP and ZLQPP.
Barbara Surma-Ślusarska +1 more
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Effect of primary fines on cooking and TCF-bleaching
Nordic Pulp & Paper Research Journal, 1999When pulp is separated into fibre fractions on the basis of size, the smallest fraction obtained is called fines.
Marie Bäckström, Elisabet Brännvall
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Preliminary studies on TCF bleaching of Pinus pinaster acetosolv pulps
Bioresource Technology, 2002Oxygen pre-treatment of Pinus pinaster acetosolv pulps has been studied as a first step towards TCF bleaching. Using a 2(3) factorial design, the influence of temperature (80-120 degrees C), time (1-2 h) and NaOH concentration (1.5-3%) on pulp yield in the oxygen stage, chemical composition and physical properties of the pulps obtained was studied ...
G, Vázquez +4 more
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Bleaching of bagasse-pulp using short TCF and ECF sequence
Nordic Pulp & Paper Research Journal, 2021Abstract More than 70 % bleached chemical pulp is produced in India through elemental chlorine-free bleaching in which chlorine-based compounds like chlorine dioxide is a dominant chemical which generates chlorinated organic toxins harmful to the environment.
Gunjan Dhiman +4 more
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Environmental Aspects of ECF vs. TCF Pulp Bleaching
2020This paper provides an update on the environmental aspects of elemental chlorine free (ECF) vs. totally chlorine free (TCF) pulp bleaching with an emphasis on literature published during the last two years. In general, there is no evidence of any adverse effects related to the use of chlorine dioxide, i.e., the trace amounts of chlorinated organics ...
Jens Folke, Lars Renberg, Neil McCubbin
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Study on TCF Bleaching of Reed Displacement Cooking Pulp
Advanced Materials Research, 2013With the improvement of environmental protection requirements, paper-making enterprises are imperative to eliminate pollution directly in production. This paper aims to adopt environment-friendly bleaching method, yield good quality pulp products. Op-Pa-P bleaching process of reed displacement cooking pulp is studied in this paper (O-oxygen, P-hydrogen
Ting Ting Fan +3 more
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Xylanase- and mannanase-aided ECF and TCF bleaching
Tappi Journal, 1996This 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 ...
Clark, Thomas +5 more
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Dissolving pulp from TCF bleached Acetosolv beech pulp
Journal of Chemical Technology & Biotechnology, 2004AbstractBeech wood samples subjected to pulping in HCl‐catalysed acetic acid media (Acetosolv process) under selected conditions were bleached using several Totally Chlorine Free (TCF) sequences including peracetic acid (Paa), alkaline (E), oxygen (O), chelating (Q) and peroxide (P) treatments.
Carlos Vila +2 more
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