Results 11 to 20 of about 2,238 (210)
Impact of dissolved matter in the oxygen delignification stage
TAPPI Journal, 2017 The presence of dissolved matter in the pulp suspension in an oxygen (O2) delignification stage, consisting mainly of dissolved lignin, is normally considered to negatively affect the delignification rate due to the competing reactions between the fiber bound lignin and the lignin dissolved in the filtrate.
Caroline Wilke +2 more
openaire +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
openaire +2 more sources
A study on oxygen delignification of Melocanna baccifera (muli bamboo) kraft pulp
BioResources, 2007 The response of kraft pulp of Melocanna baccifera (Muli bamboo) to different conditions of oxygen delignification and subsequent bleaching using CEHH sequence was studied.
Satyavolu V. Subrahmanyam +2 more
doaj +1 more source
Investigation on the properties of totally chlorine free bleached soda - oxygen pulp from old corrugated container [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2012 Soda - oxygen pulping of old corrugated container to produce totally chlorine free bleached pulp was investigated. In order to reach the optimum delignification condition; four levels of sodium hydroxide (9, 11, 13, and 15 %), three cooking times (90 ...
Vahid Delnavaz +3 more
doaj +1 more source
International Journal of Technology, 2020 As more delignification is targeted, fiber degradation becomes a main issue in the pulping process. Sodium hydroxide (NaOH) is highly related to pulp quality in the medium consistency oxygen delignification process.
Bambang Irawan +3 more
doaj +1 more source
Delignification of Lignocellulosic Biomass and Its Effect on Subsequent Enzymatic Hydrolysis
BioResources, 2015 The effect of delignification on the enzymatic hydrolysis of biomass was investigated to determine how different delignification processes affect enzymatic hydrolysis conversion yields.
Junyeong Park +4 more
doaj +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