Results 11 to 20 of about 4,064 (136)
Wood Carbon Sponge/SiO<sub>2</sub> Aerogel Composites with Anisotropic Broadband Microwave Absorption, Elastic Resilience, and Thermal Insulation. [PDF]
Adv Sci (Weinh)Anisotropic wood carbon sponge/SiO2 aerogel composites are constructed, revealing a robust direction‐dependent permittivity ordering (tangential > radial > axial). The radial direction delivers an ultra‐broadband effective absorption bandwidth of 11.6 GHz at only 4.95 mm, while the tangential direction offers superior compressibility and thermal ...
Sun S +7 more
europepmc +2 more sources
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
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Characterization of Eucalyptus nitens Lignins Obtained by Biorefinery Methods Based on Ionic Liquids
Molecules, 2020 Eucalyptus nitens wood samples were subjected to consecutive stages of hydrothermal processing for hemicellulose solubilization and delignification with an ionic liquid, i.e., either 1-butyl-3-methylimidazolium hydrogen sulfate or triethylammonium ...
Lucía Penín +4 more
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Carbohydrate Polymer Technologies and Applications, 2021 Lignocellulose is an important carbohydrate feedstock polymer for societally-acceptable second generation ethanol production. Delignification of lignocellulose is the foremost step towards accessing the sugars that can be fermented for ethanol production.
Mandeep K. Gill +2 more
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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
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Equilibrium, 2023 . Dependence on the use of fossil energy is continuously increasing every year. This is very risky, considering the dwindling availability of fossils in nature.
Muhammad Aqil Hasani +1 more
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Jurnal Agro Industri Perkebunan, 2020  The oil palm male flowers post anthesis is one of the solid wasted of oil palm which has not been much utilized. It can be used by processing into biofuel or bioethanol and to be alternative for fossil fuels whose availability is increasingly ...
Ratih Rahhutami +2 more
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Chemical Engineering Transactions, 2015 Ethanol production from lignocellulosic residues from agriculture, such as the acaí seeds, have a fundamental step, delignification. This step becomes is more effective when performed in combination with others pre- treatments, preferably with those that
J. Oliveira +3 more
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Process parameters affecting the delignification of eucalyptus kraft pulp with peroxyacetic acid [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2004 Various process parameters affecting eucalyptus kraft pulp delignification with peroxyacetic acid were investigated. The results showed that pH was an important factor. The delignification rate increased with increasing pH to the value of 6.
Chandranupap, P. +2 more
doaj
Delignification Kinetics of Corn Stover with Aqueous Ammonia Soaking Pretreatment
BioResources, 2016 Soaking aqueous ammonia (SAA) pretreatment of corn stover was carried out at three temperatures (30, 50, and 70 ºC) and three concentrations of ammonia solution (5, 15, and 25 wt.%). The delignification kinetic model, based on three first-order reactions,
Jinnan Gao +6 more
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