Results 1 to 10 of about 722,642 (183)

NIRS Characterization of Paper Pulps to Predict Kappa Number [PDF]

open access: yesJournal of Spectroscopy, 2015
Rice is one of the most abundant food crops in the world and its straw stands as an important source of fibres both from an economic and an environmental point of view.
Ana Moral   +3 more
doaj   +2 more sources

Effect of Kappa Number Variation on Modified Pulping of Eucalyptus

open access: yesBioResources, 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   +2 more sources

Effect of magnetic field on the charge and thermal transport properties of hot and dense QCD matter

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We have studied the effect of strong magnetic field on the charge and thermal transport properties of hot QCD matter at finite chemical potential. For this purpose, we have calculated the electrical conductivity ($$\sigma _\mathrm{el}$$ σel ) and the ...
Shubhalaxmi Rath, Binoy Krishna Patra
doaj   +3 more sources

A CORRELATION BETWEEN THE KAPPA NUMBER AND THE VENTORIM INDEX IN THE BLEACHING PROCESS [PDF]

open access: yesRevista Árvore
The determination of the kappa number in the bleaching process is typically conducted with a pulp quantity between 3 and 4 grams, allowing for the calculation of values above four. However, after the oxidative extraction stage with hydrogen peroxide, the
Vitor Hideyoshi Hayashida Ribeiro   +5 more
doaj   +2 more sources

Replacing imported long fiber pulp with kenaf bast fiber soda pulp to improve quality of paper made from bagasse soda pulp [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2008
We studied the possibility of replacing imported long fiber pulp (ILFP) with kenaf bast fiber soda pulp (KBFSP) to improve the quality of paper made with bagasse soda pulp (BSP).
Mohammadreza Dehghani Firouzabadi   +2 more
doaj   +1 more source

The influence of pre-hydrolysis on the delignification of Hornbeam wood [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2018
In this research, the influence of two temperatures (60 and 90°C) and three dosages of sodium hydroxide (5, 7.5 and 10%, based on the dry weight) on hornbeam wood chips alkaline pre-hydrolysis and soda pulping was studied.
Abdolrahim Mohebalian   +3 more
doaj   +1 more source

Study of initial alkali charge effects on properties of soda beech pulp by regression models [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2011
In this work effect of initial alkali charge were investigated on the yield and kappa number of soda beech pulp and alkali consumption pattern. The results indicated that, the regression models are useful for studying the relations between yield, kappa ...
Davod Efhami, Mohammad reza Dehghani
doaj   +1 more source

The Effect of H-Factor on Kappa Number and Viscosity in Continuous Digester

open access: yesCHEESA, 2023
One of the most important steps in pulping is the cooking process, which serves to separate the cellulose and hemicellulose from lignin and other by-products.
Rizka Wulandari Putri   +2 more
doaj   +1 more source

Effect of anthraquinone on NSSC pupling of P.deltoides [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2011
This research was performed to improve the properties of the pulp made of Aspen Deltoides, using antraquinone(AQ) catalizer. Neutral sulfite semichemical (NSSC) method in three efficiency levels of 55, 60, and 65% was applied.
Maryam Rostaei   +2 more
doaj   +1 more source

Evaluation of pulp properties produced from rice straw by combination the monoethanolamine and potassium hydroxide [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2015
In this research, rice straw was used as raw material. Potassium hydroxide was combined with monoethanolamine (MEA) as liquor. In another processes NaOH/Na2So3, KOH/K2So3 and KOH 14% was used as references pulp. The results showed that using pure MEA(15%)
Farzaneh Shiralizadeh   +2 more
doaj   +1 more source

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