Results 91 to 100 of about 6,824 (224)
The Dual Effect of Ionic Liquid Pretreatment on the Eucalyptus Kraft Pulp during Oxygen Delignification Process. [PDF]
Polymers (Basel), 2021 Qi L +6 more
europepmc +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
Ciência Florestal, 2010 The efficiency of oxygen delignification is very low for pulps of low number kappa and with high concentrations of hexenuronic acids, therefore the oxygen does not react with these acids, so being minimum the elimination of these during the oxygen ...
Cristiane Pedrazzi +4 more
doaj
Biomimetic TCF Bleaching of Pulp by Simple Inorganic Complexes of Cupric/Cobalt Acetate [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2014 Oxygen delignified kraft pulp from eucalyptus (E. urophylla × E. grandis) was catalytically pretreated in aerobic condition using ammonium persulfate in present of catalists like cupric acetate and/or cobalt acetate in acetic acid-water solution, i.
Xue Fei Zhou
doaj
BioResources, 2015 The experimental research, process design principles, and engineering practice of a bagasse pulp production line that could run both totally chlorine-free (OP)Q(PO) and elemental chlorine-free (OP)D(EOP) bleaching sequences are discussed in this paper ...
Zhi Li, Jun Li, Jun Xu, Li-huan Mo
doaj +1 more source
Ciência Florestal, 2014 This 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 acidolysis techniques.
Gustavo Ventorim +4 more
doaj
Mechanism of endocarp-imposed constraints of germination of Lannea microcarpa seeds [PDF]
, 2008 Lannea microcarpa, a multipurpose tree species from the dry African savanna, sheds seeds that often display inhibition of germination. The underlying mechanism was investigated using seeds processed from fully matured fruits collected from natural stands
Golovina, E.A., Hoekstra, F.A., Neya, O.
core +2 more sources
Evaluation of Hemp Root Bast as a New Material for Papermaking
BioResources, 2013 Industrial hemp is a non-wood fiber material that can be used for papermaking due to a high yield of hemp raw material and high-quality physical properties of its pulp.
Cheng Miao +3 more
doaj +1 more source
Reactivity Improvement of Bamboo Dissolving Pulp by Xylanase Modification
BioResources, 2015 A high reactivity is an essential prerequisite for dissolving pulp. In this study, xylanase modification to increase the reactivity of bamboo dissolving pulp was investigated.
Chaojun Wu +4 more
doaj +1 more source
Green Chemical EngineeringA new coupled electrolysis system has been developed by combining pretreatment of lignocellulosic biomass (corn stover) in alkaline anolyte for increasing cellulose digestibility with electrochemical reduction of CO2 on the cathode to produce formic acid.
Xi Liu +3 more
doaj +1 more source