Results 31 to 40 of about 6,920 (226)
Efeito dos ácidos hexenurônicos e da lignina no desempenho da ozonólize, em diferentes pHs da reação
Química Nova, 2006 The effect of pH on the performance of the ozonolysis stage in pulp production was evaluated for conventional and acid treated brown and oxygen delignified eucalyptus kraft pulps.
Ventorim Gustavo, Colodette Jorge Luiz
doaj +3 more sources
Studying the effects of laccase treatment in a softwood dissolving pulp: cellulose reactivity and crystallinity [PDF]
, 2014 An enzymatic biobleaching sequence (LVAQPO) using a laccase from Trametes villosa in combination with violuric acid (VA) and then followed by a pressurized hydrogen peroxide treatment (PO) was developed and found to give high bleaching properties and ...
Ariza, J. +5 more
core +2 more sources
Laccase-Mediator Pretreatment of Wheat Straw Degrades Lignin and Improves Saccharification [PDF]
, 2016 14 páginas.-- 4 figuras.-- 4 tablas.-- 49 referenciasThe authors thank Dr. Angulo for performing the NMR analyses that were acquired on a Bruker AVANCE III 500-MHz instrument from the NMR facilities of the General Research Services of the University of ...
Gutiérrez Suárez, Ana +4 more
core +1 more source
Bamboo Medical Application: A State‐of‐the‐Art Review
Advanced Materials Technologies, EarlyView.This review presents a structured classification of bamboo's current use in healthcare. It organizes applications into medical textiles and medical devices, with further divisions based on function and level of invasiveness. It also examines material utilization based on bamboo's structural role, highlighting how it supports both protective and ...
Haymanot Beza Lamesgin +3 more
wiley +1 more source
Full Sequence Bleaching with Dimethyldioxirane [PDF]
, 1995 Research work to date has shown dimethyldioxirane to be a very powerful, yet highly selective oxidant. Dimethyldioxirane bleaching may become more important in the future with legislative restrictions on chlorine based bleaching agents as it contains no ...
Krueger, Daniel
core +1 more source
Modification of the lignin structure during alkaline delignification of eucalyptus wood by kraft, soda-AQ, and soda-O2 cooking [PDF]
, 2015 11 páginas.-- 5 figuras.-- 4 tablas.-- 50 referencias.-- Supporting Information The general conditions for the kraft, soda-AQ, and soda-O2 alkaline cooking of eucalyptus feedstock, are shown in Table S1.
Berbís, Manuel Álvaro +9 more
core +2 more sources
Enhancing Biogenic Formic Acid Production in the Modified OxFA Process by Acetonitrile Addition
Advanced Science, EarlyView.In this study, the beneficial effect of using acetonitrile as a co‐solvent in the modified OxFA process is shown, outperforming methanol, demonstrating improved reaction kinetics combined with high selectivity for the HPA‐2 (H5PV2Mo10O40) catalyzed oxidation of xylose to FA.
Jan‐Dominik H. Krueger +7 more
wiley +1 more source
Ciência Florestal, 2014 http://dx.doi.org/10.5902/1980509813337This study aimed to evaluate the sensitiveness of the information obtained for the residual lignin from Eucalyptus grandis kraft pulps analyzed through the nitrobenzene oxidation, copper oxide (CuO) reduction and ...
Gustavo Ventorim +4 more
doaj +1 more source
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 +1 more source
A Study of the Use of Borates in Semi-Chemical Pulping [PDF]
, 1997 The purpose of this project was to identify sodium metaborate as a pulping chemical in semi-chemical pulping with soda ash. The experimental design included four digester cooks with 0%, 10%, 20%, and 40% addition of.the borate compound.
Hebner, Dan
core +1 more source