Results 81 to 90 of about 700 (208)
Fate of lipophilic extractives from several non-wood species during alkaline pulping and TCF/ECF bleaching [PDF]
, 2009 The chemical composition of lipophilic extractives from several nonwoody fibers such as flax, hemp, sisal and abaca, which are used in the manufacture of high quality paper pulps, was thoroughly studied by gas chromatography and gas chromatography-mass ...
Marques, Gisela +2 more
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Operating Experience of ECF Bleaching with Xylanase Treatment
JAPAN TAPPI JOURNAL, 2003 Yonago mill of Oji Paper produces approximately 1, 200 tons of hardwood pulps per day at 85-86% ISO brightness for coated paper products.Xylanase treatment with on-site enzyme production was introduced into the hardwood kraft pulp bleaching process (C-E/O-dnD) in October 1998. A thermostable xylanase from a microorganism. Bacillus sp.
openaire +2 more sources
Conversion of WastePaper into Dissolving Pulp: A Path for Circular Bioeconomy
ChemistrySelect, Volume 9, Issue 30, August 12, 2024.The potential of wastepaper to produce dissolving pulp was demonstrated in this article. By employing and optimizing chemical processes to wastepaper pulp, a noteworthy increase of 84 % in pulp Fock reactivity was achieved (from 45.6 % to 84.1 %). The pulp characteristics were followed throughout the different treatments allowing better understanding ...
Thalita P. Damaceno +3 more
wiley +1 more source
THE EFFECT OF WATER REDUCTION IN KRAFT PULP WASHING IN ECF BLEACHING
Revista ÁrvoreThe 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 +1 more source
Sub‐Band Assisted Z‐Scheme for Effective Non‐Sacrificial H2O2 Photosynthesis
Small, Volume 20, Issue 35, August 28, 2024.High‐value‐added H2O2 photosynthesis via synergistic O2 reduction and H2O oxidation is an eco‐friendly approach for sustainable solar‐to‐chemical conversion. Through in‐depth transient spectroscopic investigations, the remarkable performance of a significant sub‐band and Z‐Scheme co‐operative H2O2 photosynthesis without the need for sacrificial agents ...
Wenchao Wang +7 more
wiley +1 more source
Advanced Science, Volume 11, Issue 24, June 26, 2024.Cellulose fibers of various length scales are used to ink‐write complex‐shaped aerogels directly. High‐fidelity shapes are achieved, while anisotropic mechanical and thermal properties result from cellulose nanofiber (CNF) and cellulose nanocrystal (CNC) alignment.
Deeptanshu Sivaraman +17 more
wiley +1 more source
Operating Experience of Improved ECF Bleaching Sequence
JAPAN TAPPI JOURNAL, 2003 ECF bleaching has superseded the conventional chlorine bleaching on NO.3 LBKP-production line in Hachinohe mill of Mitsubishi Paper Mills limited in 2000. The operational data of ECF bleaching for two years made it obvious that the brightness of oxygen-bleached pulp had larger influence on the bleaching efficiency of ECF bleaching than kappa number in ...
openaire +2 more sources
Characterisation of efficient ECF bleaching parameters of eucalyptus pulp [PDF]
, 2007 At present, bleached eucalyptus kraft pulp is globally the most widely used short fiber raw material in paper making. One of the most extended technologies to bleach eucalyptus pulp is the so called ECF-technology which uses chlorine dioxide rather than
Medina, Jose Antonio
core
APPLICATION OF SURFACTANTS AS PULPING ADDITIVES IN SODA PULPING OF BAGASSE
BioResources, 2009 The effects of several non-ionic commercial surfactants and their dosage on soda pulping and ECF bleaching of soda and soda-surfactant pulps of bagasse were investigated.
Yahya Hamzeh +3 more
doaj
Operating Experience of Partial Closure in ECF Bleaching
JAPAN TAPPI JOURNAL, 2004 三菱製紙八戸工場では，漂白白水の部分クローズド化を可能とすることを条件として，新しいECF漂白シーケンスを開発した。このシーケンスは，キレート剤（Q）とキシラナーゼ（X）の同時前処理を行う（QX）処理を持つ過酸化水素ベースのECF漂白シーケンス（QX―P1―H―P2―D）である。このシーケンスを用いた工業実験を行う前に，工程内における金属バランスの調査を行った。工程内へ流入する金属は，チップ由来が殆どである。回収系へ流入した金属は，その殆どがドレッグスとして排出される。しかし，SiとAlは，ドレッグスによる除去率が低いため，系内への蓄積が懸念される。工業実験は，八戸工場にある3系列のパルププラントのうち1つを使い72時間にわたり実施され，ECF漂白によるLBKPの生産が行われた。この中で ...
openaire +1 more source