FORMATION OF VANILLIN AND SYRINGALDEHYDE IN AN OXYGEN DELIGNIFICATION PROCESS [PDF]
BioResources, 2010 The formation of vanillin and syringaldehyde during an oxygen delignification process was evaluated. The cleavage of conjugated Cα-Cβ bonds in phenolic lignin caused by the attack of oxygen leads to the formation of aromatic aldehydes and ketones.
Zhaojiang Wong, Kefu Chen, Jun Li
doaj +3 more sources
Oxygen Delignification of Acid Sulfite and Bisulfite Softwood Pulps
BioResources, 2015 This study discusses alternatives for the production of sulfite pulps cooked to high kappa numbers, and a subsequent oxygen treatment by using the same cation in the cooking and in the oxygen stages. Magnesium was used as a cation during both the cooking
Niklas Kvarnlöf, Ulf Germgård
doaj +3 more sources
The Dual Effect of Ionic Liquid Pretreatment on the Eucalyptus Kraft Pulp during Oxygen Delignification Process [PDF]
Polymers, 2021 Letian Qi, Guihua Yang, Jiachuan Chen
exaly +2 more sources
On the nature of the selectivity of oxygen delignification
Nordic Pulp and Paper Research JournalAbstract This work has focused on oxygen’s role in the delignification process within the context of pulp production. We have investigated the role of oxygen in a complex set of chemical reactions taking place during this process, including both oxidative and non-oxidative reactions.
Mikael E Lindstrom +2 more
exaly +3 more sources
Evaluating the Potential to Modify Pulp and Paper Properties through Oxygen Delignification [PDF]
ACS Omega, 2020 Cláudia S. V. G. Esteves +3 more
doaj +2 more sources
The Influence of Alkalinity in Oxygen Delignification of Soda/AQ Pulp From Old Corrugated Container [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2011 The influence of oxygen delignification as an environmental friendly process, was investigated on Soda/AQ pulp from Old Corrugated Container (OCC) fibers.
Mohammad ali Azad far +2 more
doaj +1 more source
High Selectivity Oxygen Delignification [PDF]
, 2005 Project Objective: The objectives of this project are as follows: (1) Examine the physical and chemical characteristics of a partner mill pre- and post-oxygen delignified pulp and compare them to lab generated oxygen delignified pulps; (2) Apply the chemical selectivity enhancement system to the partner pre-oxygen delignified pulps under mill ...
Arthur Ragauskas +2 more
openaire +3 more sources
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