Results 1 to 10 of about 1,752 (175)
Trend of Bleaching In Kraft Pulp
JAPAN TAPPI JOURNAL, 2009 古くから，クラフトパルプの漂白は，塩素，次亜塩素酸塩，二酸化塩素の塩素系薬品を使って行なわれてきた。しかしながら，1980年代の北欧において，バルト海の汚染問題を契機に塩素漂白排水中の有機塩素化合物の環境影響が議論され，1990年代からは多くの国々で塩素漂白が中止され，ECF（Elementary Chlorine Free）漂白法への転換が進んだ。本報告では，クラフトパルプ用漂白剤をその脱リグニン機構に基づいて分類した上で，漂白剤の変遷という観点から，1960年代から今日に至るまでのクラフトパルプ漂白の変遷について述べる。
openaire +1 more source
Adição de antraquinona na polpação alcalina de Eucalyptus saligna
Ciência Florestal, 2000 The present work evaluated different alkaline pulping conditions for Eucalyptus saligna wood. The objective was to evaluate the influence of the anthraquinone (AQ) on the reduction of the total reduced sulfur (TRS) in the aerial emissions, by reducing ...
Lúcia Helena Jerônimo +2 more
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Kraft pulping properties of european black Pine cone
Maderas: Ciencia y Tecnología, 2015 In this study, different mixtures of cones and wood chips of European black pine (Pinus nigra) were kraft cooked, and the resulting pulp and paper properties were investigated.
Sezgin Koray Gulsoy, Fatih Ozturk
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Atmospheric kraft pulping in glycerol
Scientific ReportsKraft pulping is the predominant technique for producing chemical pulps from wood. It offers low operational costs, versatility, high-quality pulps, and an efficient closed chemical recovery system.
Carl Moser +2 more
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DELIGNIFICATION OF SUGARCANE BAGASSE WITH ALKALI AND PERACETIC ACID AND CHARACTERIZATION OF THE PULP
BioResources, 2010 Sugarcane bagasse was delignified with alkali and peracetic acid in a two-stage process to obtain pulps with high yield and low kappa number. The experimental results indicated that alkali pretreatment prior to peracetic acid (PAA) delignification could ...
Ting Zhang +3 more
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APROVEITAMENTO DA CASCA DO COCO-VERDE (Cocos nucifera L.) PARA PRODUÇÃO DE POLPA CELULÓSICA
Ciência Florestal, 2016 The coconut husk is a residue from consumption of coconut water. In coastal cities this residue has already become a big problem, because it is difficult to decompose.
Mahalia Sojo Cardoso +1 more
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Prospects for biodiesel as a byproduct of wood pulping - A review
BioResources, 2006 Effective utilization of byproducts can affect the profitability of kraft pulping to produce cellulosic fibers from wood. This review considers opportunities to use tall oil components, obtained from kraft pulping, as a source of raw material for ...
Hubbe, M. A., Saka, H., Lee, S. Y.
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A brief review of the structure and extraction methods of lignin
Sustainable Chemistry for the EnvironmentOne of the three basic components of lignocellulosic biomass (LB), lignin is the second most plenty of natural polymer on the planet after cellulose. It has the power to become the aromatic raw material of the future for industry. However, this potential
Mert Yildirim
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BioResourcesDependence curves for the kappa number of digester pulp (KNDP), total pulp yield (TY), screened pulp yield (SY), and reject content in digester pulp (RDP) as a function of the kappa number of screened pulp (KNSP) were determined based on the results of ...
Dariusz Danielewicz
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