Dimensionless Parameter Approach for Oxygen Delignification Kinetics
Industrial & Engineering Chemistry Research, 2008 In this study, the kinetic analysis of oxygen delignification of Turkish southern hardwood Kraft pulp was carried out. The kinetic rate data were collected in a high pressure batch reactor at industrially significant conditions of temperature, alkali charge, and oxygen partial pressure.
Dogan, Ismail, Gueruez, Gueniz
openaire +3 more sources
Boosting Oxygen Delignification of Poplar Kraft Pulp by Xylanase Pretreatment
BioResources, 2015 Enhancement of oxygen delignification is critical to improve subsequent bleaching efficiency while being environmentally compatible. In the present study, xylanase was used to improve the delignification process of poplar kraft pulp.
Xingxiang Ji +5 more
doaj +2 more sources
Pulp strength enhancement by oxygen delignification
, 2022 Oxygen delignification is widely used in the pulp and paper industry as a part of delignification process between the kraft cook and bleaching. However, its potential has not been fully utilized. Rather than an intermediate process between cooking and bleaching, oxygen delignification is a strong oxidizing agent with powerful effects on the pulp ...
Esteves, Claudia
core +4 more sources
Wood Carbon Sponge/SiO<sub>2</sub> Aerogel Composites with Anisotropic Broadband Microwave Absorption, Elastic Resilience, and Thermal Insulation. [PDF]
Adv Sci (Weinh)Anisotropic wood carbon sponge/SiO2 aerogel composites are constructed, revealing a robust direction‐dependent permittivity ordering (tangential > radial > axial). The radial direction delivers an ultra‐broadband effective absorption bandwidth of 11.6 GHz at only 4.95 mm, while the tangential direction offers superior compressibility and thermal ...
Sun S +7 more
europepmc +2 more sources
Improved oxygen delignification of bisulfite pulps
, 1996 The role of peracetic acid in improving a second oxygen delignification step of softwood bisulfite pulp was investigated. The results showed that peracetic acid improved the degree of delignification in a second oxygen stage, probably by increasing the ...
Nilsson, Helena +3 more
core +9 more sources
Detection of muconic acid type structures in oxidised lignins using 2D NMR spectroscopy: 10(th) EWLP, Stockholm, Sweden, August 25-28, 2008 [PDF]
, 2009 The identification of muconic acid type structures (MATS) in oxidised lignins employing 2D NMR spectroscopy was carried out. The primary database for MATS detection by single bond (1)H-(13)C (HSQC) and long-range (1)H-(1)H and (1)H-(13)C correlation ...
Evtuguin, DV, Goodfellow, BJ, Rocha, G
core +1 more source
Energies, 2021 Agricultural waste, particularly lignocellulose, has been used in the second generation of biogas. Coffee pulp and chicken feathers can be developed as biogas raw materials because of their suitability as a biogas substrate.
Siswo Sumardiono +4 more
doaj +1 more source
Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2018 The first act to ameliorate bleaching process is the major elimination of lignin. Actually, the use of oxygen delignification stage before bleaching process is the essential stage in improving bleaching process and reducing process emission.
Farhad Zeinaly +3 more
doaj +1 more source
Effect of Kappa Number Variation on Modified Pulping of Eucalyptus
BioResources, 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 +1 more source
The distribution of Lignin and Xylan in the Inner and Surface Layers of the Fiber from Eucalyptus Kraft Pulp and its Effects on Oxygen Delignification [PDF]
Materials Research, 2017 The chemical structure and composition of lignin and hemicellulose, as well as the distribution between inner and outer layers of fiber, can adversely affect bleaching operations or fiber-fiber bond on pulp and, consequently the papermaking process ...
Giovani Boaventura Bacarin +3 more
doaj +1 more source