Results 21 to 30 of about 495 (117)
Papermaking Properties of Carpinus betulus with kraft, Soda and Soda-Urea Pulping Processes [PDF]
Iranian Journal of Wood and Paper Industries, 2013 This research was carried out in order to comparatively investigate the hornbeam kraft, soda and soda-urea papermaking properties. The selected treatment in kraft process had an average yield of 44.43% and kappa number of 23.75.
Rasoul Darstan +2 more
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JAPAN TAPPI JOURNAL, 2003 The Kraft process consists of the cooking process and the bleaching process mainly. In Kraft process, the weakest point is the low of the yield of pulp in the cooking process. The kinds of quinone derivatives or polysulfide derivatives are widely used as cooking agents to improve it.“Cooking Accelerator” is the agent to accelerate the function that ...
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Fermentation, 2023 The bio-refining process of bamboo is more challenging compared to wood due to its dense and stabilized complex polymer structure, as well as its abundance of degradation-resistant components. Consequently, the bio-refining of bamboo requires more energy
Chun Liu +5 more
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Improvements in pulp properties by alkali preextraction and subsequent kraft pulping with controlling H-factor and alkali charge [PDF]
BioResources, 2012 The objective of this study was to determine the processing conditions for obtaining improved pulp properties from the kraft pulping process with an alkali pre-extraction stage.
Kyujeong Sim +4 more
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Sisal organosolv pulp as reinforcement for cement based composites
Materials Research, 2009 The present work describes non-conventional sisal (Agave sisalana) chemical (organosolv) pulp from residues of cordage as reinforcement to cement based materials.
Ana Paula Joaquim +3 more
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PRIMARY IDENTIFICATION OF EUCALYPTUS (Eucalyptus camaldulensis) WOOD LIGNIN MONOMERS BY FT-IR SPECTROSCOPY [PDF]
Mesopotamia Journal of Agriculture, 2007 Lignin samples were isolated from Eucalypt wood (Eucalyptus camaldulensis) by kraft process, and then all samples were examined and tested with Fourier Transform Infrared Instrument Technique for identifying the types of lignin monomers units from their ...
Esam Mohammed Sheet
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GelsDefibrillating cellulose through various grinding steps and incorporating it into hydrogels introduces unique properties that warrant thorough exploration.
Gabriel Goetten de Lima +4 more
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Effect of Process Variables on the Solvolysis Depolymerization of Pine Kraft Lignin [PDF]
Waste and Biomass Valorization, 2019 Lignin modification opens the possibility of using it in polyol bio-based polymers, such as phenol–formaldehyde resins, polyurethanes, composites, and binders. Pine kraft lignin Indulin AT was partially depolymerized and the resulting products analyzed to determine their degree of valorization.
Werner Marcelo Goldmann +7 more
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PACTTM process for treatment of kraft mill effluent
Water Science and Technology, 1997 The PACTTM process (powdered activated carbon addition to the activated sludge process) was evaluated for the treatment of Kraft pulp mill wastewater in a series of bench scale experiments. Possibly due to the relatively low strength wastewater, the PACTTM process with carbon doses between 0.5 and 1.0 g/L of influent only performed marginally better ...
D. Ball +4 more
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The Development of Defoamer for Kraft Pulping Process
JAPAN TAPPI JOURNAL, 2004 苛性ソーダと硫化ソーダを用いて,木材チップを高温高圧下で蒸解し,パルプを取り出す方法をクラフトパルプ法(KP法)という。このとき,化学的に変性したリグニンがアルカリ液中に溶出する。このアルカリ液は黒液と呼ばれ,溶出したリグニンが界面活性をもつために非常に泡立ちやすい性質になっている。クラフトパルプ製造工程ではこの黒液がパルプの希釈水や洗浄水,分散液として循環使用されるため,泡が大量に発生する。泡はパルプの洗浄速度を下げ生産性が低下するほか,洗浄効率を低下させパルプの白色度が低下するなどパルプの品質に悪影響を及ぼす。そこで,泡をコントロールすることは,パルプの生産性と品質を安定化させために重要なポイントとなる。泡をコントロールする方法には機械的方法と化学的方法があるが ...
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