Results 21 to 30 of about 245,970 (198)

Studies on the Cooking Mechanism of Wood. XVI. On the Mechanism of Kraft Cooking [PDF]

Bulletin of the Chemical Society of Japan, 1956
Abstract 1. Hydrogen sulphide cooking of α-guaiacyl propanol (VI) gave bis(1-(4-hydroxy-3-methoxyphenyl)-1-propyl) monosulphide (VIII) and disulphide (VII). 2. Vanillyl monosulphide was decomposed with alkali at 130°. Vanillin, vanillyl alcohol and the secondary products from vanillyl alcohol were identified.
Hiroshi Mikawa, Koichiro Sato, Chizuko Takasaki, Kiyo Ebisawa   +3 more
openaire   +1 more source

EFFECT OF LIGNIN CONTENT OF Eucalyptus globulus WOOD IN KRAFT PULPING PERFORMANCE

Ciência Florestal, 2011
In this research, it was analyzed the lignin content effect of Eucalyptus globulus wood in kraft pulping optimization. Seventy-two laboratory cooking were made with wood chips obtained from six Eucalyptus globulus trees selected from a group of 50 trees.
Gabriel Valim Cardoso, Celso Edmundo Bochetti Foelkel, Sonia Maria Bitencourt Frizzo, Claudia Adriana Broglio da Rosa, Teotônio Francisco de Assis, Patrícia de Oliveira   +5 more
doaj   +1 more source

Pulping and paper making properties of Populus costanzo [PDF]

تحقیقات علوم چوب و کاغذ ایران, 2010
In this Investigation chemical, physical, morphology, pulp and paper making characteristics of   Populus costanzo were studied. The average dry and critical specific gravity was found to be  0.39and 0.36 and the fiber morphology including fiber length  ,
Abas Fakhryan, Hossein Hosseinkhani, Fardad Golbabaei, Mohammad mehdi Brazandeh   +3 more
doaj   +1 more source

Evalution Prosopis juliflora(Somr) potential in Kraft Pulping [PDF]

Iranian Journal of Wood and Paper Industries, 2016
In this research, physical, biometrical and chemical properties of Prosopis juliflora wood and then physical and mechanical properties of kraft pulp from aforesaid species were investigated and calculated. Dry and critical densities of Prosopis juliflora
ABBAS fAKHRYAN ROGHANI, Rasool yazdani, Ali Ghasemian, Hosain Resalati   +3 more
doaj  

Enhanced selectivity in softwood kraft pulping using a novel phenolic Additive: Process performance and molecular-level insights

Biomass Futures
Softwood kraft pulping is constrained by the competing requirements of efficient delignification and preservation of carbohydrate yield, which are key indicators of industrial process operations.
Sk Yasir Arafat Siddiki, Philip Woodrow, Mario Eden, Zhihua Jiang   +3 more
doaj   +1 more source

Extrusion of Softwood Kraft Lignins as Precursors for Carbon Fibres

BioResources, 2015
There is much interest in using less expensive raw materials as precursors for carbon fibre manufacture to increase the utilisation of strong, light-weight composite materials in the transportation sector. One such potential raw material is lignin.
Lennart Salmén, Elisabeth Bergnor, Anne-Mari Olsson, Mårten Åkerström, Anders Uhlin   +4 more
doaj   +1 more source

Tailor-made alkaliphilic and thermostable fungal laccases for industrial wood processing

Biotechnology for Biofuels and Bioproducts, 2022
Background During the kraft process to obtain cellulosic pulp from wood, most of the lignin is removed by high-temperature alkaline cooking, released in the black liquors and usually incinerated for energy. However, kraft lignins are a valuable source of
David Rodríguez-Escribano, Rocío Pliego-Magán, Felipe de Salas, Pablo Aza, Patrizia Gentili, Petri Ihalainen, Thomas Levée, Valérie Meyer, Michel Petit-Conil, Sandra Tapin-Lingua, Michael Lecourt, Susana Camarero   +11 more
doaj   +1 more source

Guidelines for Meta‐Analytic Structural Equation Modeling: Steps, Resources, and Illustrations

Psychology &Marketing, EarlyView.
ABSTRACT The goal of science is to build incremental, structured, and reliable knowledge over time. Yet, many strands of marketing and related disciplines exhibit symptoms of cumulative stagnation, including lack of replicability and weak theoretical integration. Existing remedies such as replication studies, multistudy investigations, and open science
Hassam Waheed, Weng Marc Lim
wiley   +1 more source

Modelagem e simulação da polpação kraft antraquinona [PDF]

, 2000
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.Em indústrias de celulose, o processo dominante é a polpação Kraft.
Georg, Ivan Carlos
core  

Influences of 2-ethylanthraquinone on lignin degradation in alkaline cooking of Eucalyptus pellita wood

Journal of Wood Science
The impact of 2-ethylanthraquinone (2-EAQ) on alkaline cooking of Eucalyptus pellita wood was examined by analyzing pulp yield, kappa number, the structure and weight-averaged molecular weight (Mw) of dissolved lignin in black liquor and residual lignin ...
Ke Luo, Taiki Nishimoto, Yasuyuki Matsushita   +2 more
doaj   +1 more source