Results 1 to 10 of about 91,381 (225)
Enzymes improve ECF bleaching of pulp
BioResources, 2006 The delignification efficiency of different laccase enzymes was examined on the eucalyptus Kraft pulp. The laccase enzyme from Trametes versicolor showing the highest delignification efficiency was selected and used in the elemental chlorine-free ...
Lachenal, D. +5 more
doaj +4 more sources
Effect of Xylanase-Assisted Treatment of Oxygen-Delignified Eucalypt Kraft Pulp on ECF Bleaching
Forests, 2023 The effects of treating industrial (laboratory-unwashed) oxygen-delignified eucalypt kraft pulp with a commercial endo-xylanase (X) on ECF bleaching performance were evaluated.
JOSÉ M S Matos +2 more
exaly +3 more sources
ECF AND TCF BLEACHING OF SECONDARY FIBER PULP
Ciência Florestal, 2009 In this study, ECF and TCF bleaching processes were evaluated for the bleaching of a deinked mixed office waste (MOW) pulp sample produced in a pilot plant. The sample was bleached by all processes to a target brightness of 78 % ISO minimum.
Gustavo Ventorim +3 more
doaj +3 more sources
Enzyme and Alkali-Aided ECF Bleaching of Kraft Bamboo Pulp
BioResources, 2015 Unbleached kraft bamboo pulp was pretreated by a xylanase and laccase (X/L) treatment, as well as a joint treatment of X/L and alkali, prior to element chlorine free (ECF) bleaching.
Yingying Du +4 more
doaj +3 more sources
BioResources, 2015 A TCF bleaching sequence consisting of a urea pretreatment stage (U), laccase-mediator system stage (L), alkaline extraction stage (E), and hydrogen peroxide bleaching stage (P) was used to study the effect of five independent variables on the dependent ...
Luisa L. García-Fuentevilla +4 more
doaj +3 more sources
A Method to Reduce Steam Consumption of ECF Bleaching Based on Operation Optimizing
Processes, 2021 Development of paper industry has been restricted by resources, energy and environment deeply; further reducing energy consumption becomes an urgent problem to be solved.
Shaoxu Chen, Yongjun Yin
exaly +2 more sources
Partial circuit closure of filtrate in an ECF bleaching plant [PDF]
Nordic Pulp & Paper Research Journal, 2020 Abstract The bleaching sector of the wood pulp industry is its largest effluent generator. The aim of this study was to reuse the bleaching filtrate in order to reduce water consumption. The experiment was conducted by simulating the D0(EP)D1 bleaching sequence and recirculating different amounts of filtrate from the oxidation stage to ...
Leonard de Almeida Batista +5 more
openaire +2 more sources
TAPPI Journal, 2017 An early stage techno-economic analysis was performed to compare a traditional elemental chlorine free (ECF) sequence (O O D0 [EOP] D1 P) with the proposed totally chlorine free (TCF) sequence (O O A [ZEO]1 [ZEO]2 P)] for a bleached eucalyptus kraft pulp mill. Similar operating costs (ECF = US$465/a.d. metric ton; TCF = US$468/a.d.
TIAGO DE ASSIS +6 more
openaire +2 more sources
BioResources, 2015 A laboratory investigation was developed to confirm and to quantify the reductions in absorbable organic halide (AOX) discharge when sodium sulphide was added during elemental chlorine-free (ECF) bleaching of sugarcane bagasse pulp.
Shuangxi Nie +3 more
doaj +2 more sources
THE EFFECT OF WATER REDUCTION IN KRAFT PULP WASHING IN ECF BLEACHING
Revista Árvore, 2016 The main objective of this work was to study the technical viability of using the cellulose bleaching effluent, at several stages of the process, seeking fresh water reduction in pulp washing, and evaluating its effect on pulp quality.
Tânia Cristina Frigieri +2 more
doaj +2 more sources