Results 21 to 30 of about 101,584 (314)

Kraft Pulping of Softwood Chips with Mild Hot Water Pre-hydrolysis to Understand the Effects of Wood Chip Thickness

open access: yesBioResources, 2022
Hemicelluloses consume alkali during kraft pulping and dissolve in the black liquor as a low energy fuel. Acidic pre-hydrolysis of softwood chips removes hemicelluloses but preserves cellulose content prior to pulping.
Jingqian Chen   +4 more
doaj   +2 more sources

Enzymatic Hydrolysis of Olive Industry Solid Waste into Glucose, the Precursor of Bioethanol [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2018
Olive industry solid waste (OISW) is a by-product generated in the process of olive oil extraction. It is a lignocellulosic material consisting of cellulose, hemicelluloses, lignin and other extractives.
Othman Hamed   +7 more
doaj  

Efeito do conteúdo e da natureza da lignina residual na eficiência e na seletividade do branqueamento com ozônio Effect of residual lignin content and nature on the efficiency and selectivity of ozone bleaching

open access: yesRevista Árvore, 2003
Neste estudo foram avaliados os efeitos do conteúdo e da natureza da lignina residual na eficiência e na seletividade do branqueamento com ozônio de polpa kraft convencional (kraft) e pré-deslignificada com oxigênio (kraft-O).
Elenice Pereira Maia   +1 more
doaj   +1 more source

Selective substitution of long-acyl groups into alcohols of kraft lignin over transesterification using ionic liquid

open access: yesJournal of Wood Science, 2021
Kraft lignin is a valuable aromatic renewable resource that is discharged in large quantities during the kraft pulping process. In this study, kraft lignin derivatives with improved solubility and thermal properties were prepared by a facile chemical ...
Shiori Suzuki, Tadahisa Iwata
doaj   +1 more source

Mein erstes Schulbuch : Fibel nach der Normalwörter-Methode fr die allgemeinen Volksschulen Österreichs

open access: yes, 1907
von Josef Kraft und Franz WichtreiMit Ministerialerlass vom 6. September 1906, Z.
Kraft, Josef
core   +1 more source

Modelagem e simulação da polpação kraft antraquinona [PDF]

open access: yes, 2000
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.Em indústrias de celulose, o processo dominante é a polpação Kraft.
Georg, Ivan Carlos
core  

A Mechanistic Study of Bio‐Based Nanotemplated Carbon Nanofibers Derived From Water Processable Lignin Blends for Sustainable Energy Storage Applications

open access: yesAdvanced Materials, EarlyView.
As‐spun carbon materials produced from Lignosulfonate, gelatin, and alginate, selected for water solubility, and ability to produce templated sustainable carbon nanostructures. Gelatin and alginate are sacrificial during thermal processing, allowing the production of engineered high surface area nanostructures, which are further characterized for ...
Judith Miralda‐Jalle   +6 more
wiley   +1 more source

Kraft Lignin Behaviour in Diffused Aeration of Kraft Effluents

open access: yesWater Science and Technology, 1988
Diffused aeration experiments carried out using a Kraft black liquor in batch reactors at 21±1ΩC were performed in order to characterize the relative importance of the mechanisms of chemical oxidation and condensation of lignin structures upon COD, lignin and colour removal and also to evaluate the influence of agitation intensity on these mechanisms ...
L. Larrea, C.F. Forster, D. Melé
openaire   +1 more source

Printable Conductive Hydrogels for Electrochemical Biosensing and Soft Bioelectronic Interfaces

open access: yesAdvanced Science, EarlyView.
Flexible, conductive hydrogels that integrate printability, mechanical tunability, biocompatibility, and electronic performance remain challenging to achieve. Here, we develop 3D‐printable poly(ethylene glycol)–poly(pyrrole)‐ hydrogels with tissue‐like mechanics, high cytocompatibility, and robust electrochemical function.
Lukas Hein   +6 more
wiley   +1 more source

Enhancing dissolving pulp quality of mixed raw materials through pre-hydrolysis kraft-cooking: A study on Acacia crassicarpa and Terminalia catappa

open access: yesCommunications in Science and Technology
Acacia crassicarpa wood is widely used in Indonesia as a raw material for dissolving pulp (DP) by the kraft-cooking process. Given that Indonesia has a rich variety and abundance of cellulose-rich wood, it is deemed crucial to research alternative raw ...
Yusnimar Sahan   +7 more
doaj   +1 more source

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