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Residual acid effect on oxygen delignification
(2016-06-01)
This work has aimed to evaluate the effect of usage of residual acid from the chemical plant of chlorine dioxide production as a #owing part of oxidized white liquor (OWL). Delignification processes were accomplished using ...
Mass balance of pilot-scale pretreatment of sugarcane bagasse by steam explosion followed by alkaline delignification
(ELSEVIER SCI LTDOXFORD, 2012)
Five pilot-scale steam explosion pretreatments of sugarcane bagasse followed by alkaline delignification were explored. The solubilised lignin was precipitated with 98% sulphuric acid. Most of the pentosan (82.6%), and the ...
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
(2017-07-01)
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 ...
A Thermal Analysis of the Internal Flow in 2 Helical Coils for the Delignification Process of Sugar Cane Bagasse Using Superheated Steam
(Springer Science and Business Media Deutschland GmbH, 2022-01-01)
The present work proposes an analysis of the internal temperature flow in two types of helical coils, whose number of turns is 6 and 10, for the sugar cane bagasse delignification process, using superheated steam as a heat ...
A Cleaner Delignification of Urban Leaf Waste Biomass for Bioethanol Production, Optimised by Experimental Design
(MDPI, 2022-05)
This work is focused on optimising a low-temperature delignification as holocellulose purification pretreatment of Platanus acerifolia leaf waste for second-bioethanol production. Delig-nification was accomplished by ...
Influência do número kappa, dos ácidos hexenurônicos e da lignina no desempenho da deslignificação com oxigênio
(2006-10-25)
This study aimed at determining the effect of kappa number, lignin and hexenuronic acid contents on oxygen stage performance. Industrial brown pulps produced by the ITC and KobudoMARI cooking technologies, of kappa number ...
Influência do número kappa, dos ácidos hexenurônicos e da lignina no desempenho da deslignificação com oxigênio
(2006-10-25)
This study aimed at determining the effect of kappa number, lignin and hexenuronic acid contents on oxygen stage performance. Industrial brown pulps produced by the ITC and KobudoMARI cooking technologies, of kappa number ...
Optimization of the soda-ethanol delignification stage for a rice husk biorefinery
(Elsevier Science, 2017-03)
The aim of this work was to optimize the delignification of the hemicelluloses-free fraction of rice husk to obtain fractions of lignin, cellulose, and inorganics, which could be valorized in the context of the rice husk ...
Low liquid-solid ratio fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv delignification
(Elsevier Science, 2015-03)
In this study, the fractionation of sugarcane bagasse at low liquor-solid ratio (LSR) was firstly reported. The effect of low LSR fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv ...
Optimization of the soda-ethanol delignification stage for a rice husk biorefinery
(Elsevier, 2017-03-01)
The aim of this work was to optimize the delignification of the hemicelluloses-free fraction of rice husk to obtain fractions of lignin, cellulose, and inorganics, which could be valorized in the context of the rice husk ...