Results 71 to 80 of about 1,752 (175)

Thermal and Alkali Stability of Sodium Dithionite Studied Using ATR-FTIR Spectroscopy

BioResources, 2017
Sodium dithionite (Na2S2O4) may have the potential to be used as a reducing agent for the stabilization of glucomannan in kraft cooking for increased pulp yield.
Vijaya Lakshmi Vegunta, Jasna S. Stevanic, Mikael Lindström, Lennart Salmen   +3 more
doaj   +1 more source

Chip-Handling and Kraft Pulping.

JAPAN TAPPI JOURNAL, 1996
パルプ原材料の96%を占めるチップの現状と購入チップの受け入れ設備及び貯蔵施設に触れた後, KP蒸解反応と連続蒸解設備の改良について, 反応速度論の立場から解説した。脱リグニン反応速度と炭水化物の崩壊反応速度をチップ厚さの影響なども含め説明し, 時間, 温度, アルカリ濃度, 硫化度及びチップ厚さの5因子を入れた蒸解反応速度式をアルレニウスの式に基づいた実験式として紹介した。さらに蒸解の目的がパルプ成分である炭水化物をできるだけ多く残し, リグニンの残留量を少なくすることから.反応が選択的になり得るための望ましい蒸解反応条件を探るために蒸解反応の選択性とシミュレーションによる最適化を解説した。すなわち, 得られた実験式に各種蒸解条件を入れて数値計算し ...
openaire   +2 more sources

EVALUATION OF CHEMICAL COMPOSITION AND LIGNIN STRUCTURAL FEATURES OF SIMAROUBA VERSICOLOR WOOD ON ITS PULPING PERFORMANCE

BioResources, 2012
Simarouba versicolor wood was evaluated relative to its kraft pulping ability and compared with Eucalyptus urograndis wood. Comprehensive chemical analysis of wood and milled wood lignin (MWL) was performed, aiming to correlate wood and lignin structural
Teresa Cristina F. Silva,, José Lívio Gomide,, Ricardo Balleirini Santos   +2 more
doaj  

Relationship between the Change in E/T Ratio and the Cooking Performance of Eucalyptus and Acacia Woods during Kraft Pulping Process. [PDF]

Molecules, 2023
Yu J, Xu X, Miao C, Li P, Tong G.
europepmc   +1 more source

Investigation of pulping and paper making potential of weeds [PDF]

Iranian Journal of Wood and Paper Industries, 2017
Increasing use of wood products accompanying with resource constraint has revealed the importance of nonwood based material. In this study, pulping and papermaking potential of three varieties of weeds including Xanthium spinosum, Carthamus tinctorius ...
omid Ghaffarzadeh Mollabashi, Mearaj Sharari, mohammadtaghi Alebrahim   +2 more
doaj  

Emulsion Stabilization by Cationic Lignin Surfactants Derived from Bioethanol Production and Kraft Pulping Processes. [PDF]

Polymers (Basel), 2022
Yuliestyan A, Partal P, Navarro FJ, Martín-Sampedro R, Ibarra D, Eugenio ME.   +5 more
europepmc   +1 more source

CHARACTERIZATION AND PROPERTIES OF ION EXCHANGERS PRODUCED FROM LIGNIN PRECIPITATED AFTER PEROXYACID PULPING

BioResources, 2008
Pulping of bagasse by one-stage and three-stage peroxyacetic acid was carried out. Characterization of the precipitated lignin from the waste liquor of the pulping process was studied using infrared spec-troscopy.
A. M. A. Nada, Nesrine F. Kassem, Samar H. Mohamed   +2 more
doaj  

TH E E FFE C T O F PR E T R E A T M E N T O F W O O D CIIIPS W 1TH W H IT E RO T FU N G I O N B E A T IN G PE R F O R M A N C E A N D ST R E N G T H PR O PE R T IE S OF PO L Y SU L PH ID E A N T R A -Q U IN O N K R A FT PU L P

Forestist, 2006
Pretreatm ent of softw ood chips w ith lignin degrading fungi was carried out and its effect on polysulphide antraquinon kraft pulping (PSA Q ) vvas studied.
Celil ATİK, Sami İMAMOĞLU
doaj   +1 more source

Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam

Biotechnology for Biofuels, 2013
Background Lignin is one of the three major components in plant cell walls, and it can be isolated (dissolved) from the cell wall in pretreatment or chemical pulping.
Pan Xuejun, Saddler Jack N
doaj   +1 more source

A importância relativa da densidade da madeira e do teor de carboidratos no rendimento de polpa e na qualidade do produto

Ciência Florestal, 2008
The purpose of this study was to evaluate basic density, chemical composition and fiber dimensions of ten Eucalyptus sp wood samples and to verify the impact of this set of parameters and their combination on the Kraft pulping process yield and on ...
Alfredo Mokfienski, Jorge Luiz Colodette, José Lívio Gomide, Ana Márcia M. Ladeira Carvalho   +3 more
doaj