Results 61 to 70 of about 91,381 (225)
Problems and Measures in ECF Bleaching Operation
JAPAN TAPPI JOURNAL, 2007 紀州工場パルプ漂白工程は2004年8月からECF漂白に転換し，2年半が経過した。漂白初段には高温二酸化塩素段を国内で初めて採用，高温二酸化塩素タワー後のプレス洗浄機にはポンプを使わずに供給するシステムを世界で初めて採用した。これまでの操業上のトラブルとしては各所のスケール付着が挙げられる。現在は年2回の定期修理時に高圧洗浄または酸洗浄でスケールを除去する事により定修間連操は可能となっている。高温二酸化塩素処理は色戻り対策として有効であるが，当初計画の90℃から85℃に温度条件を変更して蒸気使用量の削減を図っている。
openaire +1 more source
Evaluation of Eucalyptus KRAFT-AQ ECF and TCF pulps
, 2019 Devido à descoberta de componentes tóxicos nos efluentes de indústria de celulose provenientes do cloro, utilizado na etapa de branqueamento de polpa química, grande pressão ambiental começou a atuar sobre o setor.
Gomes, Isabel Menezes de Bulhões
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Advanced Functional Materials, Volume 34, Issue 49, December 2, 2024.The TOC shows the molecular structures of 4tCzPz and 4αCbPz, along with the overlayed electroluminescence and ASE spectra. The green and blue backgrounds correspond to the emission colors of 4tCzPz and 4αCbPz, respectively. Abstract Thermally activated delayed fluorescence (TADF) materials are expected to address triplet‐related losses in electrically ...
Dongyang Chen +8 more
wiley +1 more source
Effect of Kappa Number Variation on Modified Pulping of Eucalyptus
BioResources, 2016 This work evaluated the impact of brownstock pulp kappa number variations on modified pulping process, oxygen delignification, bleaching, and the physical characteristics on bleached pulp.
Tiago Edson Simkunas Segura +3 more
doaj +1 more source
BioResources, 2010 Two industrial elemental chlorine free (ECF) bleaching sequences, D0(EOP)D1(EP)D2 and OQ(PO)DP, are compared with respect to the bulk content of lignin, carboxyl, hexeneuronic acids (HexA), and reducing groups after each bleaching stage.
Pedro Loureiro +3 more
semanticscholar +1 more source
Environmental DNA, Volume 6, Issue 6, November–December 2024.We compared eDNA metabarcoding and underwater visual census (UVC) to monitor biodiversity across habitat transitions in the complex, low‐visibility coastal waters of urban Hong Kong. While eDNA detected broader species richness and unique taxa, UVC focused on reef species with high site fidelity.
Arthur Chung +3 more
wiley +1 more source
Tertiary Amines in Catalytic Pulp Bleaching
, 2019 The motif of the current study arises from the importance of the paper in Finland as one of the core industries. The latest released statistics reported by the Confederation of European Paper Industries (CEPI) confirms that Finland, by producing 28.5% of
Afsahi, Ghazaleh
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Impact of kaolin filler on physical and mechanical paper properties formed by ECF pulp [PDF]
, 2014 The paper industry is the main global consumer of kaolin. It is mostly used as paper filler, due to its lower cost as compared to pulp cost. Color removal process from pulp - chemical bleaching - determines final pulp's characteristics.
Favaro, Jaqueline Silveira Comelato [UNESP] +15 more
core +1 more source
, 2021 SCA Massa, Östrands massafabrik har två produktionslinjer, fiberlinjen som tillverkar NBSK (blekt barrsulfatmassa) och CTMP-linjen som tillverkar CTMP (kemisk termomekanisk massa).
Granbom, Linn
core
Branqueamento de polpa de eucalipto com sequências curtas
Ciência Florestal, 2011 Eucalyptus spp kraft pulp, due to its high content of hexenuronic acids, is quite easy to bleach. Therefore, investigations have been made attempting to decrease the number of stages in the bleaching process in order to minimize capital costs. This study
Flaviana Reis Milagres +3 more
doaj