Results 1 to 10 of about 12,157 (207)
Formation and Chemical Structure of Carbon-13 Tracer Lignin-Carbohydrate Complexes (LCCs) During Kraft Pulping [PDF]
MoleculesIn this study, a modified synthetic method for labeling a lignin dimer (guaiacylglycerol-β-guaiacyl ether-[α-13C]) was developed. The chemical structure of the target compound was analyzed using 1H-NMR, 13C-NMR, and other analytical techniques. Then, the
Zhi Wang, Yimin Xie, Boxuan Zhao
doaj +2 more sources
Detailed modeling of the kraft pulping chemistry: carbohydrate reactions [PDF]
AICHE Journal, 2020 AbstractThe article introduces a detailed model for carbohydrate chemistry in kraft pulping. This article is continuation to the modeling work carried out for hot water extraction and chemical pulp bleaching. The model includes galactoglucomannan, xylan, and cellulose acid–base equilibria, in addition to peeling, stopping, and alkaline hydrolysis ...
Olesya Fearon +2 more
exaly +5 more sources
EFFECTS OF ALKALINE PRE-IMPREGNATION AND PULPING ON MALAYSIA CULTIVATED KENAF (HIBISCUS CANNABINUS [PDF]
BioResources, 2010 This study was carried out to identify an appropriate alkaline pulping condition for Malaysia cultivated kenaf (Hibiscus cannabinus L.). The chemical composition of the kenaf bast and core fibers, and also whole stalk with different growing time were ...
Lin Suan Ang +2 more
doaj +1 more source
ON THE RECOVERY OF HEMICELLULOSE BEFORE KRAFT PULPING
BioResources, 2012 To assess the feasibility of implementing hemicellulose recovery stages in kraft mills, Eucalyptus globulus wood samples were subjected to aqueous treatments with hot, compressed water (autohydrolysis processing) to achieve partial dissolution of xylan ...
Carlos Vila, +4 more
doaj +2 more sources
Comparison of Soda, Kraft, and DES Pulp Properties of European Black Poplar
Drvna Industrija, 2022 Kraft pulping as the dominant pulping method contributes to several environmental problems. To overcome these problems, environmentally friendly pulping methods have been investigated. In the last years, deep eutectic solvents (DESs) have been identified
Sezgin Koray Gülsoy +2 more
doaj +1 more source
Advances in Forestry Science, 2019 Despite of the wide use worldwide, the industrial potential of bamboo species in Brazil is not much investigated. However, some encouragement to revert this situation was created in last few years. The aim of this research was to evaluate the technological characteristics of the Bambusa vulgaris biomass for the production of pulp by the kraft process ...
Bonfatti Júnior, Eraldo Antonio +7 more
openaire +2 more sources
Torrefaction of kraft pulp mills sludges
Scientific Reports, 2023 AbstractTorrefaction emerges as an industrial process that increases the energy content of conventional biomass. Primary and secondary sludge are the main solid residues generated in the Effluent Treatment Plants of bleached kraft pulp mills, and can be considered as biomass. Typically, these wastes are sent to industrial landfills.
Carlos Moreira Miquelino Eleto Torres +4 more
openaire +3 more sources
BioResources, 2022 Hemicelluloses consume alkali during kraft pulping and dissolve in the black liquor as a low energy fuel. Acidic pre-hydrolysis of softwood chips removes hemicelluloses but preserves cellulose content prior to pulping.
Jingqian Chen +4 more
doaj +2 more sources
Estimation of energy efficiency of kraft pulp production with the exergy increment method
Известия высших учебных заведений: Проблемы энергетики, 2020 This article contains results of exergic analysis of kraft pulping flow chart. The results of exergic balances of main kraft pulping processes such as alkali recovery at recovery boilers, black liquor evaporation, chips cooking, lime decarbonation are ...
Р. V. Lukanin
doaj +1 more source
Structural alterations of lignins in transgenic poplars with depressed cinnamyl alcohol dehydrogenase or caffeic acid O-methyltransferase activity have an opposite impact on the efficiency of industrial kraft pulping [PDF]
, 1999 International audienceWe evaluated lignin profiles and pulping performances of 2-year-old transgenic poplar (Populus tremula × Populus alba) lines severely altered in the expression of caffeic acid/5-hydroxyferulic acidO-methyltransferase (COMT) or ...
Boerjan, Wout +10 more
core +3 more sources